[igraph] Wrong graph size after delete vertices

[Николай Кинаш]

cat test.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import igraph as ig
import numpy.random as np

g = ig.Graph.Barabasi(1000000, 2)

victims = np.randint(0, g.vcount(), size = 700000)

print "graph size before: " + str( g.vcount() )
print "victims_size: " + str( len( victims.tolist() ) )
g.delete_vertices( victims.tolist() )
print "graph size after: " + str( g.vcount() )


./test.py
graph size before: 1000000
victims_size: 700000
graph size after: 496641

"graph size after" changin over time, why he is not equal to 300000?