(* let newmeta = ProofEngineHelpers.new_meta_of_proof ~proof in *)
let (head, newmetas, args, newmeta) =
ProofEngineHelpers.saturate_term newmeta []
(* let newmeta = ProofEngineHelpers.new_meta_of_proof ~proof in *)
let (head, newmetas, args, newmeta) =
ProofEngineHelpers.saturate_term newmeta []