YES(?,ELEMENTARY)

'epo* (timeout of 60.0 seconds)'
--------------------------------
Answer:           YES(?,ELEMENTARY)
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  c() -> f()
     , f() -> g()}

Proof Output:    
  Strict Rules in Predicative Notation:
   {  c() -> f()
    , f() -> g()}
  Safe Mapping:
   safe(c) = {}, safe(f) = {}, safe(g) = {}
  Argument Permutation:
   mu(c) = [], mu(f) = []
  Precedence:
   f ~ f, c > f, c ~ c