/usr/lib/x86_64-linux-gnu/libOsi.so.1 is in coinor-libosi1 0.106.4-1ubuntu5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libOsi.so.1.11.4
/usr/lib/x86_64-linux-gnu/libOsi.so.1.11.4