/usr/lib/sbcl/sb-cover/test-data-1.lisp is in sbcl 2:1.0.55.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4
(in-package sb-cover-test) (defun test1 () (+ 1 2))