adding an annotation to trivial_preorder, this reduces some queries to prove that trivial_preorder is a preorder, thanks @nik for the suggestion
adding an annotation to trivial_preorder, this reduces some queries to prove that trivial_preorder is a preorder, thanks @nik for the suggestion

FStarLang/FStar,A-Manning/FStar,FStarLang/FStar,FStarLang/FStar,A-Manning/FStar,A-Manning/FStar