MAYBE

Problem:
 a(a(a(b(x1)))) -> b(a(b(a(x1))))
 b(b(a(x1))) -> a(a(a(b(x1))))

Proof:
 RT Transformation Processor:
  strict:
   a(a(a(b(x1)))) -> b(a(b(a(x1))))
   b(b(a(x1))) -> a(a(a(b(x1))))
  weak:
   
  Matrix Interpretation Processor:
   dimension: 1
   interpretation:
    [a](x0) = x0,
    
    [b](x0) = x0 + 2
   orientation:
    a(a(a(b(x1)))) = x1 + 2 >= x1 + 4 = b(a(b(a(x1))))
    
    b(b(a(x1))) = x1 + 4 >= x1 + 2 = a(a(a(b(x1))))
   problem:
    strict:
     a(a(a(b(x1)))) -> b(a(b(a(x1))))
    weak:
     b(b(a(x1))) -> a(a(a(b(x1))))
   Open