/usr/share/doc/ is in alt-ergo 0.99.1+dfsg1-4build3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/alt-ergo/
/usr/share/doc/alt-ergo/examples/
/usr/share/doc/alt-ergo/examples/invalid/
/usr/share/doc/alt-ergo/examples/invalid/arith2.why
/usr/share/doc/alt-ergo/examples/invalid/arith1.why
/usr/share/doc/alt-ergo/examples/invalid/arrays.why
/usr/share/doc/alt-ergo/examples/invalid/bitv.why
/usr/share/doc/alt-ergo/examples/valid/
/usr/share/doc/alt-ergo/examples/valid/quantifiers.why
/usr/share/doc/alt-ergo/examples/valid/arith2.why
/usr/share/doc/alt-ergo/examples/valid/arith1.why
/usr/share/doc/alt-ergo/examples/valid/arrays.why
/usr/share/doc/alt-ergo/examples/valid/congruence.why
/usr/share/doc/alt-ergo/examples/valid/arith4.why
/usr/share/doc/alt-ergo/examples/valid/enum_arrays.why
/usr/share/doc/alt-ergo/examples/valid/ac_arith.why
/usr/share/doc/alt-ergo/examples/valid/bitv.why
/usr/share/doc/alt-ergo/examples/valid/arith3.why
/usr/share/doc/alt-ergo/copyright
/usr/share/doc/alt-ergo/changelog.Debian.gz