Nous avons procédé ce jeudi matin 08 avril 2021 à une MAJ de sécurité urgente. Nous sommes passé de la version 13.9.3 à la version 13.9.5 les releases notes correspondantes sont ici:

Commit 427bf011 authored by atafat's avatar atafat

blocking semantic wp monotonicity

parent 22db17a2
......@@ -673,6 +673,11 @@ predicate stmt_writes (s:stmt) (w:Set.set mident) =
eval_fmla sigma pi (abstract_effects s f) ->
eval_fmla sigma pi f
axiom abstract_effects_monotonic :
forall s:stmt, f:fmla.
valid_fmla f ->
valid_fmla (abstract_effects s f)
function wp (s:stmt) (q:fmla) : fmla =
match s with
| Sskip -> q
......@@ -695,7 +700,6 @@ predicate stmt_writes (s:stmt) (w:Set.set mident) =
axiom abstract_effects_writes :
forall sigma:env, pi:stack, s:stmt, q:fmla.
eval_fmla sigma pi (abstract_effects s q) ->
......@@ -707,18 +711,16 @@ predicate stmt_writes (s:stmt) (w:Set.set mident) =
(* fresh_in_stmt id e -> *)
(* subst (wp e q) id id' = wp e (subst q id id') *)
lemma distrib_conj:
forall sigma:env, pi:stack, s:stmt, p q:fmla.
(eval_fmla sigma pi (wp s p)) /\
(eval_fmla sigma pi (wp s q)) ->
eval_fmla sigma pi (wp s (Fand p q))
lemma monotonicity:
forall s:stmt, p q:fmla.
valid_fmla (Fimplies p q)
-> valid_fmla (Fimplies (wp s p) (wp s q) )
lemma distrib_conj:
forall s:stmt, sigma:env, pi:stack, p q:fmla.
(eval_fmla sigma pi (wp s p)) /\
(eval_fmla sigma pi (wp s q)) ->
eval_fmla sigma pi (wp s (Fand p q))
lemma wp_reduction:
forall sigma sigma':env, pi pi':stack, s s':stmt.
......@@ -702,7 +702,7 @@ induction 1; intros q Hq.
(* case Sassign *)
simpl in Hq.
rewrite eval_msubst in Hq.
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