/usr/lib/x86_64-linux-gnu/libncbiCacc.so.6 is in libncbi6 6.1.20110713-3ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libncbiNacc.so.6
/usr/lib/x86_64-linux-gnu/libncbiNacc.so.6