MAYBE

'Pop* (timeout of 60.0 seconds)'
--------------------------------
Answer:           MAYBE
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  f(x, c(x), c(y)) -> f(y, y, f(y, x, y))
     , f(s(x), y, z) -> f(x, s(c(y)), c(z))
     , f(c(x), x, y) -> c(y)
     , g(x, y) -> x
     , g(x, y) -> y}

Proof Output:    
  The input cannot be shown compatible