GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
0 module generators 0 Hilbert basis elements of recession monoid 2 vertices of polyhedron 0 extreme rays of recession cone 2 support hyperplanes of polyhedron (homogenized) embedding dimension = 4 affine dimension of the polyhedron = 1 rank of recession monoid = 0 dehomogenization: 0 0 0 1 module rank = 0 *********************************************************************** 0 module generators: 0 Hilbert basis elements of recession monoid: 2 vertices of polyhedron: 1 0 4 2 3 2 0 2 0 extreme rays of recession cone: 2 support hyperplanes of polyhedron (homogenized): 0 1 0 0 2 -3 0 0 2 equations: 2 0 1 -3 0 2 1 -2 2 basis elements of lattice: 1 0 4 2 0 1 -6 -2