MAYBE

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

Proof:
 RT Transformation Processor:
  strict:
   a(x1) -> x1
   a(b(x1)) -> c(a(x1))
   c(c(x1)) -> b(b(c(b(a(x1)))))
  weak:
   
  Matrix Interpretation Processor:
   dimension: 1
   interpretation:
    [c](x0) = x0 + 16,
    
    [b](x0) = x0 + 3,
    
    [a](x0) = x0 + 2
   orientation:
    a(x1) = x1 + 2 >= x1 = x1
    
    a(b(x1)) = x1 + 5 >= x1 + 18 = c(a(x1))
    
    c(c(x1)) = x1 + 32 >= x1 + 27 = b(b(c(b(a(x1)))))
   problem:
    strict:
     a(b(x1)) -> c(a(x1))
    weak:
     a(x1) -> x1
     c(c(x1)) -> b(b(c(b(a(x1)))))
   Open