handle case where first part does not have a solution

[barvinok.git] / tests / decomposition13

D 1
6 5
1   6   1  -6  -6 
1   0  -1   0   5
1   0   0   1   0 
1  -1   0   1   1 
1  -6  -1   5  11 
1   0   0  -1   1

F 0
11