overlapping routes occupting the same space

https://git.libre-riscv.org/?p=soclayout.git;a=summary

commit bd6b78003c0cc6579fbad73593e69f2714f3a770 Author: Luke Kenneth Casson Leighton lkcl@lkcl.net Date: Mon Apr 6 16:42:47 2020 +0000

experimenting with positions

two routes are trying to ocupy the same position, 665l 250l

contact A VIA34 vertical A METAL3 HORIZONTAL A METAL4

BUT... also HORIZONTAL B METAL4

all at the same position