Module Type CLIGHT_SEPARATION_HOARE_LOGIC_STORE_BACKWARD.
Declare Module CSHL_Def: CLIGHT_SEPARATION_HOARE_LOGIC_DEF.

Axiom semax_store_backward: forall {CS: compspecs} {Espec: OracleKind} (Delta: tycontext) e1 e2 P,
@semax CS Espec Delta
(EX sh: share, !! writable_share sh && |> ( (tc_lvalue Delta e1) &&  (tc_expr Delta (Ecast e2 (typeof e1)))  &&
((`(mapsto_ sh (typeof e1)) (eval_lvalue e1)) * (`(mapsto sh (typeof e1)) (eval_lvalue e1) (`force_val (`(sem_cast (typeof e2) (typeof e1)) (eval_expr e2))) -* P))))
(Sassign e1 e2)
(normal_ret_assert P).