Error: Ran out of precision at

[bigsu]

What's this?
triangle.triangulate({"vertices": all_vertices, "segments": all_segments}, "pD")
I attempted to split a segment to a smaller size than can be accommodated by the finite precision of floating point arithmetic.
Try increasing the area criterion and/or reducing the minimum allowable angle so that tiny triangles are not created.

[bigsu]

btw,program crash may be caused by duplicate coordinates