MAYBE
LCTRS
  Theories
    Core, Ints
  Signature
    fact1: Int -> Int
    u: (Int, Int, Int) -> Int
  Rules
    u(!n, !i, !z) -> u(!n, +(!i, 1), *(!z, !i)) [<=(!i, !n)]
    u(!n, !i, !z) -> !z [not(<=(!i, !n))]
    fact1(!n) -> u(!n, 1, 1)
No termination info given.

Elapsed Time:  48.33 ms