/usr/lib/ is in libxmlada-sax6-dev 4.5.2015-8+b2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ada/
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-attributes.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-encodings.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-exceptions.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-htable.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-locators.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-models.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-pointers.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-readers.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-state_machines.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-symbols.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax-utils.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_sax/sax.ali
/usr/lib/x86_64-linux-gnu/libxmlada_sax.a
/usr/lib/x86_64-linux-gnu/libxmlada_sax.so