/usr/lib/libvigraimpex.so.5 is in libvigraimpex5v5 1.10.0+dfsg-11ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libvigraimpex.so.5.1.10.0
/usr/lib/libvigraimpex.so.5.1.10.0