MAYBE

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

Proof:
 RT Transformation Processor:
  strict:
   c(a(a(c(x1)))) -> a(a(a(x1)))
   b(x1) -> a(c(a(x1)))
   a(b(a(x1))) -> b(b(x1))
  weak:
   
  Matrix Interpretation Processor:
   dimension: 1
   interpretation:
    [b](x0) = x0 + 9,
    
    [a](x0) = x0 + 5,
    
    [c](x0) = x0 + 6
   orientation:
    c(a(a(c(x1)))) = x1 + 22 >= x1 + 15 = a(a(a(x1)))
    
    b(x1) = x1 + 9 >= x1 + 16 = a(c(a(x1)))
    
    a(b(a(x1))) = x1 + 19 >= x1 + 18 = b(b(x1))
   problem:
    strict:
     b(x1) -> a(c(a(x1)))
    weak:
     c(a(a(c(x1)))) -> a(a(a(x1)))
     a(b(a(x1))) -> b(b(x1))
   Open