Problem:
 +(0(),x) -> x
 +(1(),-(1())) -> 0()
 +(+(x,y),z) -> +(x,+(y,z))
 +(x,y) -> +(y,x)

Proof:
 Church Rosser Transformation Processor (ac):
  f5_AC(0(),x) -> x
  f5_AC(1(),-(1())) -> 0()
  AC critical peaks: joinable
  AC-KBO Processor:
   precedence:
    1 > - > f5_AC > 0
    weight function:
     w0 = 2
     w(0) = 7
     w(f5_AC) = w(1) = 2
     w(-) = 1
    problem:
     
    Qed