GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
2 Hilbert basis elements of degree 1 2 extreme rays 2 support hyperplanes embedding dimension = 2 rank = 2 (maximal) external index = 1 internal index = 1 grading: -12345678901234567889 1 degrees of extreme rays: 1: 2 *********************************************************************** 2 Hilbert basis elements of degree 1: 0 1 1 12345678901234567890 2 extreme rays: 0 1 1 12345678901234567890 2 support hyperplanes: -12345678901234567890 1 1 0