MAYBE
Time: 0.008

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

Proof:
 Open