Hint Resolve f_pred_exclusive.

(* Specifications: *)
Lemma apply_hist_app : forall h1 h2 H, apply_hist H (h1 ++ h2) =
match apply_hist H h1 with Some H' => apply_hist H' h2 | None => None end.
Lemma hashtable_entry_timeless : forall T lg entries i, timeless (hashtable_entry T lg entries i).
Lemma hashtable_timeless : forall H g lg entries, timeless (hashtable H g lg entries).
Lemma hashtable_inv_timeless : forall gh g lg entries, timeless (hashtable_inv gh g lg entries).
Lemma body_f : semax_body Vprog Gprog f_f f_spec.
Lemma lock_struct : forall p, data_at_ Tsh (Tstruct _lock_t noattr) p = data_at_ Tsh tlock p.
Lemma add_fails : forall k v b l H H' (HH : apply_hist H l = Some H') (Hadd : In (HAdd k v b) l)
(Hk : H k <> None), b = false.