YES
Time: 0.007

Problem:
 Equations:
  
 TRS:
  joinAC(x,meetAC(x,y)) -> x
  meetAC(x,joinAC(x,y)) -> x

Proof:
 AC-KBO Processor:
  precedence:
   meetAC > joinAC
   weight function:
    w0 = 4
    w(meetAC) = w(joinAC) = 0
   problem:
    Equations:
     
    TRS:
     
   Qed