YES (ignored inputs)COMMENT Example 2 of \cite{GL06} Rewrite Rules: [ nats -> :(0,inc(nats)), inc(:(?x,?y)) -> :(s(?x),inc(?y)), hd(:(?x,?y)) -> ?x, tl(:(?x,?y)) -> ?y, inc(tl(nats)) -> tl(inc(nats)) ] Apply Direct Methods... Inner CPs: [ inc(tl(:(0,inc(nats)))) = tl(inc(nats)) ] Outer CPs: [ ] not Overlay, check Termination... unknown/not Terminating unknown Knuth & Bendix Linear unknown Development Closed unknown Strongly Closed unknown Weakly-Non-Overlapping & Non-Collapsing & Shallow inner CP cond (upside-parallel) innter CP Cond (outside) unknown Upside-Parallel-Closed/Outside-Closed (inner) Parallel CPs: (not computed) unknown Toyama (Parallel CPs) Simultaneous CPs: [ tl(inc(nats)) = inc(tl(:(0,inc(nats)))), inc(tl(:(0,inc(nats)))) = tl(inc(nats)) ] unknown Okui (Simultaneous CPs) unknown Strongly Depth-Preserving & Root-E-Closed/Non-E-Overlapping unknown Strongly Weight-Preserving & Root-E-Closed/Non-E-Overlapping check Locally Decreasing Diagrams by Rule Labelling... Critical Pair by Rules <0, 4> preceded by [(inc,1),(tl,1)] joinable by a reduction of rules <[([(inc,1)],3)], [([(tl,1),(inc,1)],0),([(tl,1)],1),([],3)]> Satisfiable by 1,4,5>2,3; :(0,0)s(0)hd(0)tl(0)inc(0); 5>1,4>2,3 Diagram Decreasing Direct Methods: CR Final result: CR 20.trs: Success(CR) (4 msec.)