Section soundness.
Existing Instance unit_kMD.
Context {P: ProgrammingLanguage}
{MD: Model}
{BSS: BigStepSemantics P model}
{J: Join model}
{R: Relation model}
{po_R: PreOrder Krelation}
{SA_BSS: SABigStepSemantics P model BSS}.
Context {L: Language}
{minL: MinimumLanguage L}
{pL: PropositionalLanguage L}
{sepconL: SepconLanguage L}
{SM: Semantics L MD}
{kiSM: KripkeIntuitionisticSemantics L MD tt SM}
{fsepconSM: FlatSemantics.SepconSemantics L MD tt SM}.

Lemma hoare_frame_partial_sound: forall c P Q F,
triple_partial_valid P c Q ->
triple_partial_valid (P * F) c (Q * F).