MAYBE

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

Proof:
 RT Transformation Processor:
  strict:
   a(b(b(a(x1)))) -> a(c(a(b(x1))))
   a(c(x1)) -> c(c(a(x1)))
   c(c(c(x1))) -> b(c(b(x1)))
  weak:
   
  Matrix Interpretation Processor:
   dimension: 1
   interpretation:
    [c](x0) = x0 + 6,
    
    [b](x0) = x0 + 14,
    
    [a](x0) = x0 + 13
   orientation:
    a(b(b(a(x1)))) = x1 + 54 >= x1 + 46 = a(c(a(b(x1))))
    
    a(c(x1)) = x1 + 19 >= x1 + 25 = c(c(a(x1)))
    
    c(c(c(x1))) = x1 + 18 >= x1 + 34 = b(c(b(x1)))
   problem:
    strict:
     a(c(x1)) -> c(c(a(x1)))
     c(c(c(x1))) -> b(c(b(x1)))
    weak:
     a(b(b(a(x1)))) -> a(c(a(b(x1))))
   Open