Singular

LIB "polymake.lib";
==> Welcome to polymake version
==> Copyright (c) 1997-2015
==> Ewgenij Gawrilow, Michael Joswig (TU Darmstadt)
==> http://www.polymake.org
intmat M[4][3]=
1,1,0,
1,1,1,
1,0,1,
1,0,0;
polytope p = polytopeViaPoints(M);
latticeVolume(p);
==> polymake: used package ppl
==>   The Parma Polyhedra Library (PPL): A C++ library for convex polyhedra
==>   and other numerical abstractions.
==>   http://www.cs.unipr.it/ppl/
==> 
==> 2
intmat N[4][3]=
1,1,0,
1,2,1,
1,0,1,
1,0,0;
polytope q = polytopeViaPoints(N);
latticeVolume(q);
==> 3
intmat W[4][4]=
1,1,0,0,
1,0,1,0,
1,0,0,1,
1,0,0,0;
polytope r = polytopeViaPoints(W);
latticeVolume(r);
==> 1