1  subtermUnify 		arachne.c +961
3  unify 			mgu.c +233 ; mgu.c +247 ; mgu.c +281

dependencies:

subtermUnify is called using unifiesWithKeys
unify is called using unify_combine_enc and unify_combined_tup, and a callback using the keys list? (which propagates back to subtermunify data)