/usr/lib/x86_64-linux-gnu/libslepc_real.so.3.6 is in libslepc3.6 3.6.1.dfsg1-2build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libslepc_real.so.3.6.1
/usr/lib/x86_64-linux-gnu/libslepc_real.so.3.6.1