Definition on_path b o p :=
In b (concat (lookup_path_oram o p)).

Lemma stash_path_combined_rel_Rd_undef : forall (id id' : block_id) (s : state) (p_new : path),
well_formed s ->
undef id s ->
undef id ((get_pre_wb_st id' Read s
(calc_path id' s) p_new)).