[igraph] IGRAPH_FINALLY_REAL error in python binding

[Yaohua Xiong]

Hi,

I'm relative new to the igraph lib and encounters a weird problem. The problem is boiled down like this:

given following code snippet

"""

# initialize a graph with postive attribute "imp_tt"

for i in range(1000):

    sp = graph.shortest_paths(sidx, tidx, weights="imp_tt")[0][0]

"""

for a small graph of 1000+ vertices, this code snippet works perfectly.

But for a bigger graph of 10000+ vertices the code crash with

"""

python: igraph_error.c:173: IGRAPH_FINALLY_REAL: Assertion `no<100' failed.

Aborted

"""

after about 100 iterations.

However if I delete the weights="imp_tt" part it works again.

I searched the archive and get a sense that it involves a stack not get released. But then why it doesn't need to be explicitly released for the small graph?

Any Ideas what's going wrong?

Best Regards,

Yaohua Xiong

--
M.Sc. Engg Yaohua Xiong

Universität Stuttgart
Lehrstuhl für Verkehrsplanung und Verkehrsleittechnik