inst_matches_final_bug.m:023: In clause for `return_three = out(bound(3))':
inst_matches_final_bug.m:023:   mode error: the function result did not get
inst_matches_final_bug.m:023:   sufficiently instantiated.
inst_matches_final_bug.m:023:   Final instantiatedness of `HeadVar__1' was
inst_matches_final_bug.m:023:   `ground',
inst_matches_final_bug.m:023:   expected final instantiatedness was `bound(3)'.