MAYBE
(ignored inputs)COMMENT doi:10.1007/s10817-011-9238-x [33] Example 3
Rewrite Rules:
   [ nats -> :(0,inc(nats)),
     inc(:(?x,?y)) -> :(s(?x),inc(?y)),
     inc(tl(nats)) -> tl(inc(nats)),
     hd(:(?x,?y)) -> ?x,
     tl(:(?x,?y)) -> ?y,
     d(:(?x,?y)) -> :(?x,:(?x,d(?y))) ]
Apply Direct Methods...
Inner CPs:
   [ inc(tl(:(0,inc(nats)))) = tl(inc(nats)) ]
Outer CPs:
   [  ]
Left-Linear, not Right-Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

Combined result: Can't judge
112.trs: Failure(unknown CR)
(0 msec.)