let labels_stmt_assigns s l_post = function
| LogicLabel (None, "Pre") -> Logic_const.pre_label (* fct pre-state *)
| LogicLabel (None, ("Here" | "Old")) -> (* contract pre-state *)
Clabels.mk_logic_label s
| LogicLabel (None, "Post") -> labels_stmt_post s l_post Logic_const.post_label
| LogicLabel (Some s, _) -> Clabels.mk_logic_label s
| StmtLabel rs -> Clabels.mk_logic_label !rs
| l -> raise (LabelError l)