MAYBE

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

Proof:
 RT Transformation Processor:
  strict:
   a(a(a(x1))) -> b(b(c(a(a(x1)))))
   b(b(x1)) -> c(a(b(x1)))
   c(x1) -> x1
  weak:
   
  Matrix Interpretation Processor:
   dimension: 1
   interpretation:
    [b](x0) = x0 + 8,
    
    [c](x0) = x0 + 7,
    
    [a](x0) = x0
   orientation:
    a(a(a(x1))) = x1 >= x1 + 23 = b(b(c(a(a(x1)))))
    
    b(b(x1)) = x1 + 16 >= x1 + 15 = c(a(b(x1)))
    
    c(x1) = x1 + 7 >= x1 = x1
   problem:
    strict:
     a(a(a(x1))) -> b(b(c(a(a(x1)))))
    weak:
     b(b(x1)) -> c(a(b(x1)))
     c(x1) -> x1
   Open