bash-3.00$ cat petr
4 6
1 -1 -1 -1 1 0
1 1 -1 0 0 0
1 0 1 -1 0 0
1 0 0 1 0 -1

0 3
n
bash-3.00$ ./barvinok_series < petr
POLYHEDRON Dimension:4
           Constraints:5  Equations:0  Rays:5  Lines:0
Constraints 5 6
Inequality: [  -1  -1  -1   1   0 ]
Inequality: [   1  -1   0   0   0 ]
Inequality: [   0   1  -1   0   0 ]
Inequality: [   0   0   1   0  -1 ]
Inequality: [   0   0   0   0   1 ]
Rays 5 6
Ray:    [   1   1   1   3 ]
Ray:    [   1   1   0   2 ]
Ray:    [   1   0   0   1 ]
Ray:    [   0   0   0   1 ]
Vertex: [   1   1   1   3 ]/1
POLYHEDRON Dimension:1
           Constraints:1  Equations:0  Rays:2  Lines:1
Constraints 1 3
Inequality: [   0   1 ]
Rays 2 3
Line:   [   1 ]
Vertex: [   0 ]/1
(n^3)/((1-n^3) * (1-n^2) * (1-n) * (1-n))