A small modification of the example code in issue #32 results in the error SetLength: can't change this vector's length The Sage code is quoted below and it can also be [run at Sagecell](https://sagecell.sagemath.org/?z=eJxNjkEKgzAQRfeCd5hlUlKJ7r2DQulGpAQdbUCNHVOwt-_EUuJiwp__hvAGcjNsZsTMLh5pMB1u2WS8R7Dz6shD6EcyHtOkghIqN32e2JNbhMXXVjaNVpAr4Fe3ChqO19Oqj5jH7c8jDGWEOvDTR78JRUjFcZO3rUyTnW1WthlxEXXNxUrsKqKwAJEXl0pmXd8_7oQr4YaLN96yvFSwK2BS3uiNIEF-AfDkSKw=&lang=sage&interacts=eJyLjgUAARUAuQ==). ``` from sage.interfaces.latte import integrate P = Polyhedron(ieqs=[[0, 1, 0, 0], [1, -1, 0, 0], [0, 0, 1, 0], [0, 1, -1, 0], [0, 0, 0, 1], [0, 1, 0, -1], [1, -1, -1, -1], [-1, 2, 1, 1]]) x = polygen(QQ) print( integrate( (12*P).cdd_Vrepresentation(), x, cdd=True ) ) ```