let (_, ey1, ty1) = CicUtil.lookup_meta goal1 metasenv in
let (_, ey2, ty2) = CicUtil.lookup_meta goal2 metasenv in
let ty_sort1,_ = CicTypeChecker.type_of_aux' metasenv ey1 ty1
let (_, ey1, ty1) = CicUtil.lookup_meta goal1 metasenv in
let (_, ey2, ty2) = CicUtil.lookup_meta goal2 metasenv in
let ty_sort1,_ = CicTypeChecker.type_of_aux' metasenv ey1 ty1