Using Dotty on large function call graph (~20 000 nodes) Gives "size too big"

Reducing the file to have only 5 000 lines of edges (ie. 5 -> {1;2;3;4;}) causes dot to crash. Dotty still tries to continue, but eventually gives up after the second crash of dot.

Produced crash report "dottybug.dot" is 7,3 MB
Input file: b206.dot
Comments:
vcg or aisee crashed with less dignity than dot/dotty ;)

Do you have rule of thump on how big a graph dot/dotty can handle ?

[erg] At first blush, this appears to be a stack overflow in search_component during mincross.
Owner: *
Status: *