MAYBE

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

Proof:
 RT Transformation Processor:
  strict:
   a(x1) -> b(b(c(x1)))
   a(b(x1)) -> x1
   a(c(b(x1))) -> a(a(a(x1)))
  weak:
   
  Matrix Interpretation Processor:
   dimension: 1
   interpretation:
    [b](x0) = x0,
    
    [c](x0) = x0,
    
    [a](x0) = x0 + 16
   orientation:
    a(x1) = x1 + 16 >= x1 = b(b(c(x1)))
    
    a(b(x1)) = x1 + 16 >= x1 = x1
    
    a(c(b(x1))) = x1 + 16 >= x1 + 48 = a(a(a(x1)))
   problem:
    strict:
     a(c(b(x1))) -> a(a(a(x1)))
    weak:
     a(x1) -> b(b(c(x1)))
     a(b(x1)) -> x1
   Open