Commit 97b304a0 authored by Robbert Krebbers's avatar Robbert Krebbers

Tweak a proof.

parent 00d7fbc1
......@@ -63,11 +63,10 @@ Lemma step_fupdN_soundness `{invPreG Σ} φ n :
( `{Hinv: invG Σ}, (|={, }=>^n |={, }=> φ : iProp Σ)%I)
iIntros (Hiter).
eapply (soundness (M:=iResUR Σ) _ (S (S n))).
eapply (fupd_plain_soundness ); first by apply _.
intros Hinv. rewrite -/sbi_laterN.
iPoseProof (Hiter Hinv) as "H".
intros Hiter.
apply (soundness (M:=iResUR Σ) _ (S (S n))); simpl.
apply (fupd_plain_soundness _).
intros Hinv. iPoseProof (Hiter Hinv) as "H".
destruct n as [|n].
- rewrite //=. iPoseProof (fupd_plain_strong with "H") as "H'".
do 2 iMod "H'"; iModIntro; auto.
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