MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          a__c() -> b()
          a__c() -> c()
          a__f(X1,X2,X3) -> f(X1,X2,X3)
          a__f(b(),X,c()) -> a__f(X,a__c(),X)
          mark(b()) -> b()
          mark(c()) -> a__c()
          mark(f(X1,X2,X3)) -> a__f(X1,mark(X2),X3)
      - Signature:
          {a__c/0,a__f/3,mark/1} / {b/0,c/0,f/3}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {a__c,a__f,mark} and constructors {b,c,f}
  + Applied Processor:
      NaturalMI {miDimension = 3, miDegree = 3, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE