summate.c: barvinok_summate: ignore floors independent of variables

[barvinok.git] / tests / ehrhart / vol4

10 6
   1    4    0   -1  -20   24 
   1   -4    0    1   20  -21 
   1    0    4  -21    0   25 
   1    0    4  -20   -1   24 
   1    0   -4   21    0  -22 
   1    0   -4   20    1  -21 
   1    0    0    1    0   -2 
   1    0    0   -1    0   20 
   1    0    0    0    1   -1 
   1    0    0    0   -1   20 
1 4
   1    0    0    1