MAYBE

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

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