./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted/NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.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/NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.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 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:14:01,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:14:01,361 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:14:01,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:14:01,374 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:14:01,375 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:14:01,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:14:01,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:14:01,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:14:01,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:14:01,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:14:01,384 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:14:01,385 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:14:01,386 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:14:01,388 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:14:01,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:14:01,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:14:01,392 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:14:01,394 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:14:01,396 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:14:01,397 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:14:01,398 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:14:01,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:14:01,404 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:14:01,404 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:14:01,405 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:14:01,406 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:14:01,409 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:14:01,411 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:14:01,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:14:01,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:14:01,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:14:01,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:14:01,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:14:01,419 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:14:01,421 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:14:01,422 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:14:01,457 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:14:01,458 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:14:01,459 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:14:01,459 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:14:01,459 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:14:01,461 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:14:01,461 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:14:01,461 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:14:01,461 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:14:01,461 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:14:01,461 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:14:01,462 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:14:01,462 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:14:01,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:14:01,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:14:01,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:14:01,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:14:01,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:14:01,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:14:01,463 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:14:01,463 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:14:01,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:14:01,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:14:01,464 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:14:01,465 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:14:01,465 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:14:01,465 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:14:01,465 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:14:01,466 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:14:01,466 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 -> 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 [2018-11-28 23:14:01,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:14:01,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:14:01,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:14:01,538 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:14:01,538 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:14:01,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:14:01,605 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e497ba9/729226898129406bbaa86fdc1c3ae3d3/FLAGc417e4632 [2018-11-28 23:14:02,049 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:14:02,050 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:14:02,056 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e497ba9/729226898129406bbaa86fdc1c3ae3d3/FLAGc417e4632 [2018-11-28 23:14:02,386 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e497ba9/729226898129406bbaa86fdc1c3ae3d3 [2018-11-28 23:14:02,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:14:02,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:14:02,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:14:02,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:14:02,399 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:14:02,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7485e674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02, skipping insertion in model container [2018-11-28 23:14:02,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:14:02,434 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:14:02,662 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:14:02,669 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:14:02,690 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:14:02,711 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:14:02,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02 WrapperNode [2018-11-28 23:14:02,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:14:02,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:14:02,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:14:02,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:14:02,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:14:02,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:14:02,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:14:02,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:14:02,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (1/1) ... [2018-11-28 23:14:02,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:14:02,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:14:02,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:14:02,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:14:02,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (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 23:14:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2018-11-28 23:14:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2018-11-28 23:14:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2018-11-28 23:14:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2018-11-28 23:14:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:14:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:14:03,230 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:14:03,230 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 23:14:03,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:14:03 BoogieIcfgContainer [2018-11-28 23:14:03,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:14:03,233 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:14:03,233 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:14:03,239 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:14:03,240 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:14:03,240 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:14:02" (1/3) ... [2018-11-28 23:14:03,242 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58e318fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:14:03, skipping insertion in model container [2018-11-28 23:14:03,242 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:14:03,242 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:02" (2/3) ... [2018-11-28 23:14:03,242 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58e318fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:14:03, skipping insertion in model container [2018-11-28 23:14:03,242 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:14:03,243 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:14:03" (3/3) ... [2018-11-28 23:14:03,247 INFO L375 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:14:03,318 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:14:03,319 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:14:03,319 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:14:03,319 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:14:03,319 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:14:03,320 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:14:03,320 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:14:03,320 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:14:03,320 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:14:03,351 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-28 23:14:03,387 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 23:14:03,388 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:03,388 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:03,398 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:14:03,398 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:14:03,398 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:14:03,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-28 23:14:03,402 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 23:14:03,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:03,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:03,404 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:14:03,404 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:14:03,414 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 22#L25true call main_#t~ret6 := rec2(main_~x~0);< 3#rec2ENTRYtrue [2018-11-28 23:14:03,414 INFO L796 eck$LassoCheckResult]: Loop: 3#rec2ENTRYtrue ~j := #in~j; 20#L18true assume !(~j <= 0); 18#L20true call #t~ret3 := rec2(~j - 1);< 3#rec2ENTRYtrue [2018-11-28 23:14:03,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:03,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1617, now seen corresponding path program 1 times [2018-11-28 23:14:03,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:03,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:03,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:03,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:03,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:03,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:03,525 INFO L82 PathProgramCache]: Analyzing trace with hash 39867, now seen corresponding path program 1 times [2018-11-28 23:14:03,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:03,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:03,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:03,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:03,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:03,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash 48182123, now seen corresponding path program 1 times [2018-11-28 23:14:03,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:03,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:03,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:03,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:03,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:03,718 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:03,719 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:03,719 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:03,719 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:03,720 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:03,720 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:03,720 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:03,720 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:03,720 INFO L131 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 23:14:03,720 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:03,721 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:03,745 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 23:14:03,754 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 23:14:03,757 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 23:14:03,763 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 23:14:03,785 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 23:14:03,885 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:03,886 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 23:14:03,893 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:03,893 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:03,902 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:03,903 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:03,926 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:03,927 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:03,931 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:03,932 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret3=0} Honda state: {rec2_#t~ret3=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 23:14:03,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:03,955 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:03,962 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:03,962 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:03,985 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:03,985 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:14:04,012 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:04,013 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:04,035 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:04,037 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:04,037 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:04,038 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:04,038 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:04,038 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:04,038 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:04,038 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:04,038 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:04,038 INFO L131 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 23:14:04,038 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:04,039 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:04,040 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 23:14:04,068 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 23:14:04,158 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 23:14:04,185 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 23:14:04,217 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 23:14:04,429 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:04,435 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:04,437 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 23:14:04,439 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:04,439 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:04,440 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:04,440 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:04,440 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:04,443 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:04,443 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:04,447 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:04,448 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 23:14:04,449 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:04,449 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:04,449 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:04,449 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:04,450 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:04,451 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:04,451 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:04,458 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:04,464 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:04,464 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:04,466 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:04,466 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:04,467 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:04,467 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2018-11-28 23:14:04,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:04,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:04,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:04,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:04,783 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 23:14:04,801 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:04,803 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 4 states. [2018-11-28 23:14:05,040 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 4 states. Result 36 states and 44 transitions. Complement of second has 12 states. [2018-11-28 23:14:05,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 23:14:05,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 23:14:05,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:05,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:14:05,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:05,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:14:05,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:05,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 44 transitions. [2018-11-28 23:14:05,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:14:05,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 23 states and 30 transitions. [2018-11-28 23:14:05,062 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-28 23:14:05,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-28 23:14:05,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-11-28 23:14:05,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:05,066 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-28 23:14:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-11-28 23:14:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-11-28 23:14:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:14:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2018-11-28 23:14:05,098 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-11-28 23:14:05,098 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-11-28 23:14:05,098 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:14:05,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2018-11-28 23:14:05,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:14:05,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:05,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:05,101 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:05,101 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:14:05,101 INFO L794 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 108#L25 call main_#t~ret6 := rec2(main_~x~0);< 107#rec2ENTRY ~j := #in~j; 109#L18 assume !(~j <= 0); 111#L20 call #t~ret3 := rec2(~j - 1);< 110#rec2ENTRY ~j := #in~j; 112#L18 assume ~j <= 0;#res := 0; 121#rec2FINAL assume true; 122#rec2EXIT >#33#return; 117#L20-1 call #t~ret4 := rec1(#t~ret3);< 113#rec1ENTRY [2018-11-28 23:14:05,101 INFO L796 eck$LassoCheckResult]: Loop: 113#rec1ENTRY ~i := #in~i; 118#L12 assume !(~i <= 0); 114#L14 call #t~ret0 := rec1(~i - 2);< 113#rec1ENTRY [2018-11-28 23:14:05,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1361947899, now seen corresponding path program 1 times [2018-11-28 23:14:05,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:05,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:05,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:05,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:05,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:05,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:05,128 INFO L82 PathProgramCache]: Analyzing trace with hash 29941, now seen corresponding path program 1 times [2018-11-28 23:14:05,128 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:05,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:05,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:05,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:05,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:05,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:05,145 INFO L82 PathProgramCache]: Analyzing trace with hash 766186353, now seen corresponding path program 1 times [2018-11-28 23:14:05,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:05,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:05,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:05,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:05,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:14:05,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:14:05,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 23:14:05,322 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:05,322 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:05,322 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:05,323 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:05,323 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:05,323 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:05,323 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:05,323 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:05,324 INFO L131 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 23:14:05,324 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:05,324 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:05,325 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 23:14:05,337 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 23:14:05,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:05,347 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 23:14:05,349 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 23:14:05,354 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 23:14:05,806 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:05,806 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:14:05,812 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:05,812 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 23:14:05,837 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:05,837 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:05,860 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:05,862 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:05,862 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:05,862 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:05,862 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:05,862 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:05,863 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:05,863 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:05,863 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:05,863 INFO L131 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 23:14:05,863 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:05,863 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:05,864 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 23:14:05,879 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 23:14:05,885 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 23:14:05,886 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 23:14:05,891 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 23:14:05,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:05,957 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:05,958 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:05,958 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 23:14:05,959 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:05,959 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:05,959 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:05,960 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:05,960 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:05,961 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:05,961 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:05,967 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:05,971 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-28 23:14:05,971 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:14:05,972 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:05,972 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:05,972 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:05,972 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2018-11-28 23:14:05,973 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:05,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:06,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:06,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:06,240 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 23:14:06,241 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 23:14:06,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 7 Second operand 5 states. [2018-11-28 23:14:06,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 7. Second operand 5 states. Result 43 states and 58 transitions. Complement of second has 14 states. [2018-11-28 23:14:06,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-11-28 23:14:06,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-28 23:14:06,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:06,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-28 23:14:06,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:06,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-28 23:14:06,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:06,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 58 transitions. [2018-11-28 23:14:06,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:14:06,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 50 transitions. [2018-11-28 23:14:06,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-28 23:14:06,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-28 23:14:06,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 50 transitions. [2018-11-28 23:14:06,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:06,466 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 50 transitions. [2018-11-28 23:14:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 50 transitions. [2018-11-28 23:14:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-28 23:14:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 23:14:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2018-11-28 23:14:06,473 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-11-28 23:14:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:14:06,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:14:06,478 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 6 states. [2018-11-28 23:14:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:14:06,572 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2018-11-28 23:14:06,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:14:06,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2018-11-28 23:14:06,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:14:06,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 31 states and 40 transitions. [2018-11-28 23:14:06,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-28 23:14:06,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-28 23:14:06,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 40 transitions. [2018-11-28 23:14:06,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:06,580 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 40 transitions. [2018-11-28 23:14:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 40 transitions. [2018-11-28 23:14:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-11-28 23:14:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 23:14:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-11-28 23:14:06,585 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-28 23:14:06,586 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-28 23:14:06,586 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:14:06,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2018-11-28 23:14:06,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:14:06,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:06,587 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:06,588 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:06,589 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:14:06,589 INFO L794 eck$LassoCheckResult]: Stem: 343#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 320#L25 call main_#t~ret6 := rec2(main_~x~0);< 319#rec2ENTRY ~j := #in~j; 321#L18 assume !(~j <= 0); 323#L20 call #t~ret3 := rec2(~j - 1);< 322#rec2ENTRY ~j := #in~j; 325#L18 assume !(~j <= 0); 324#L20 call #t~ret3 := rec2(~j - 1);< 322#rec2ENTRY ~j := #in~j; 326#L18 assume ~j <= 0;#res := 0; 336#rec2FINAL assume true; 337#rec2EXIT >#33#return; 328#L20-1 call #t~ret4 := rec1(#t~ret3);< 327#rec1ENTRY ~i := #in~i; 329#L12 assume ~i <= 0;#res := 0; 340#rec1FINAL assume true; 341#rec1EXIT >#35#return; 342#L20-2 #res := #t~ret4 - 1;havoc #t~ret3;havoc #t~ret4; 344#rec2FINAL assume true; 346#rec2EXIT >#33#return; 332#L20-1 call #t~ret4 := rec1(#t~ret3);< 338#rec1ENTRY [2018-11-28 23:14:06,589 INFO L796 eck$LassoCheckResult]: Loop: 338#rec1ENTRY ~i := #in~i; 345#L12 assume !(~i <= 0); 334#L14 call #t~ret0 := rec1(~i - 2);< 338#rec1ENTRY [2018-11-28 23:14:06,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:06,589 INFO L82 PathProgramCache]: Analyzing trace with hash -196165858, now seen corresponding path program 1 times [2018-11-28 23:14:06,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:06,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:06,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:06,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:06,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:06,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash 29941, now seen corresponding path program 2 times [2018-11-28 23:14:06,619 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:06,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:06,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:06,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:06,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:06,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:06,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1473414328, now seen corresponding path program 1 times [2018-11-28 23:14:06,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:06,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:06,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:06,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:06,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 23:14:06,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:14:06,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 23:14:06,864 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:06,865 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:06,865 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:06,865 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:06,865 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:06,866 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:06,866 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:06,866 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:06,866 INFO L131 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 23:14:06,866 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:06,867 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:06,868 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 23:14:06,870 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 23:14:06,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:06,875 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 23:14:06,879 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 23:14:06,884 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 23:14:06,963 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:06,963 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:06,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:06,967 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:06,971 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:06,971 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:06,992 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:06,992 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:06,994 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:06,995 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:07,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:07,017 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:07,024 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:07,024 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=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 23:14:07,046 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:07,046 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:07,050 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:07,050 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:07,073 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:07,073 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:07,078 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:07,078 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:07,100 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:07,100 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:07,124 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:07,124 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:07,145 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:07,147 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:07,147 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:07,147 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:07,147 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:07,147 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:07,147 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:07,148 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:07,148 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:07,148 INFO L131 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 23:14:07,148 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:07,148 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:07,150 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 23:14:07,154 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 23:14:07,160 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 23:14:07,162 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 23:14:07,164 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 23:14:07,172 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 23:14:07,238 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:07,238 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:07,239 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 23:14:07,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:07,241 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:07,242 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:07,242 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:07,242 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:07,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:07,243 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:07,245 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:07,245 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 23:14:07,246 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:07,246 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:07,246 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:07,246 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:07,246 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:07,247 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:07,247 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:07,248 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:07,249 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 23:14:07,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:07,249 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:07,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:07,250 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:07,250 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:07,250 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:07,250 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:07,251 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:07,252 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 23:14:07,252 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:07,252 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:07,253 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:07,253 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:07,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:07,253 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:07,253 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:07,255 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:07,255 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 23:14:07,256 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:07,256 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:07,256 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:07,256 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:07,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:07,257 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:07,257 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:07,261 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:07,263 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-28 23:14:07,264 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:14:07,264 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:07,264 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:07,265 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:07,265 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2018-11-28 23:14:07,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:07,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:07,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:07,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:07,450 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 23:14:07,451 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 23:14:07,451 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 8 Second operand 5 states. [2018-11-28 23:14:07,549 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 31 states and 37 transitions. Complement of second has 7 states. [2018-11-28 23:14:07,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:14:07,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 23:14:07,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:07,553 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:07,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:07,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:07,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:07,706 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 23:14:07,706 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 23:14:07,706 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 8 Second operand 5 states. [2018-11-28 23:14:07,769 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 31 states and 37 transitions. Complement of second has 7 states. [2018-11-28 23:14:07,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:14:07,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 23:14:07,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:07,771 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:07,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:07,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:07,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:07,969 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 23:14:07,970 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 23:14:07,970 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 8 Second operand 5 states. [2018-11-28 23:14:08,129 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 53 states and 65 transitions. Complement of second has 13 states. [2018-11-28 23:14:08,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-11-28 23:14:08,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 23:14:08,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:08,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 24 letters. Loop has 3 letters. [2018-11-28 23:14:08,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:08,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 21 letters. Loop has 6 letters. [2018-11-28 23:14:08,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:08,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 65 transitions. [2018-11-28 23:14:08,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:14:08,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 52 transitions. [2018-11-28 23:14:08,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-11-28 23:14:08,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2018-11-28 23:14:08,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-11-28 23:14:08,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:08,139 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-11-28 23:14:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-11-28 23:14:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-11-28 23:14:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 23:14:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 23:14:08,146 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 23:14:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:14:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:14:08,147 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 8 states. [2018-11-28 23:14:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:14:08,226 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-28 23:14:08,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 23:14:08,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 29 transitions. [2018-11-28 23:14:08,228 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:14:08,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-11-28 23:14:08,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:14:08,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:14:08,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:14:08,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:14:08,229 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:14:08,229 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:14:08,229 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:14:08,229 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:14:08,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:14:08,230 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:14:08,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:14:08,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:14:08 BoogieIcfgContainer [2018-11-28 23:14:08,236 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:14:08,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:14:08,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:14:08,237 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:14:08,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:14:03" (3/4) ... [2018-11-28 23:14:08,241 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:14:08,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:14:08,242 INFO L168 Benchmark]: Toolchain (without parser) took 5850.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 218.1 MB). Free memory was 952.7 MB in the beginning and 1.2 GB in the end (delta: -242.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:14:08,244 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:14:08,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.39 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:14:08,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.71 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 23:14:08,246 INFO L168 Benchmark]: Boogie Preprocessor took 24.93 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 23:14:08,246 INFO L168 Benchmark]: RCFGBuilder took 449.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:14:08,247 INFO L168 Benchmark]: BuchiAutomizer took 5003.65 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -64.1 MB). Peak memory consumption was 866.0 kB. Max. memory is 11.5 GB. [2018-11-28 23:14:08,248 INFO L168 Benchmark]: Witness Printer took 4.47 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 23:14:08,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.39 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.71 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 24.93 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 449.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5003.65 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -64.1 MB). Peak memory consumption was 866.0 kB. Max. memory is 11.5 GB. * Witness Printer took 4.47 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.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 4 locations. One deterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 2.6s. Construction of modules took 0.3s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 88 SDtfs, 94 SDslu, 174 SDs, 0 SdLazy, 125 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...