Dear All,

I am trying to call CIwavefunction.ndet() but the returned number is not the correct number of determinants.

For example :

```
#! Li FCI Energy Point
import numpy as np
import matplotlib.pyplot as plt
memory 250 mb
molecule mol {
Li
symmetry c1
}
set reference rohf
set basis cc-pvdz
set opdm True
set PRINT_MOS True
set PRINT_BASIS True
energy, wfn = energy('FCI', return_wfn=True)
ndet = wfn.ndet()
print 'Number of Determinants:',ndet
```

Gives the following output:

— Number of Determinants: 47149231132504 —

rather than the correct number of 1274 determinants.

Is there a method that returns the converged CI vector with the corresponding determinant indices?

Thank you in advance.

Best,

Shachar