dot -Tps _dot.dot >_dot.ps
Dot allocates 77 MB of memory, works for several minutes,
and then terminates without producing any output and without issuing
any error messages.
If the "-v" option is turned on, one can see that
some diagnostic message is interrupted in the middle
(the full printout is attached).
Input file: b1129.dot
Output file: b1129.txt