TRS:
 {f(X) -> g()}
 POP* + Boolean Semantic Labelling:
  Normal positions:
  pi(f_sl=1) = [1], pi(f_sl=0) = [1]
  
Safe positions:
   
  
Precedence:
   f_sl=0 > g_sl=0
   empty
  
Interpretation:
   g^(0):
    | 0
   f^(1):
   0 | 0
   1 | 0
   
  
Labelling:
   g^(0):
    | 0
   f^(1):
   0 | 0
   1 | 0
   
  
Labelled predicative System:
   {f_sl=0(X;) -> g_sl=0(),
    f_sl=0(X;) -> g_sl=0()}
  

  Qed