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Proof step 2 from proof lift-unknown (previous step)

(r ==>_ * R)[rs, f, g] ⊦ ∃ a. (a[r =>_] * R)[rs, f, g]

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ r ==>_ = _∃(λ o, a. r ==>(o, a))
Proof step 4:
(_∃(λ o, a. r ==>(o, a)) * R)[rs, f, g] ⊦ ∃ a. (a[r =>_] * R)[rs, f, g]

Rule argument

spec: maplet, inst: heap-aux name: mapex seq: ⊦ r ==>_ = _∃(λ o, a. r ==>(o, a)) subst: [r] → [r] flags: <all paths>

Additional information

Used terms: r