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Proof step 1 from proof refsize-0-notin-index (conclusion)

⊦ gstore[n] = groupblock(gndx, lax, 0) ∧ n ∈ gstore ∧ ri-cons(ri, nodes(gstore ↓, ginval)) ∧ refsize-cons(gstore, range ri) ∧ inv(gstore \ ginval) → ¬ @(n, m0, m1) ∈ ri

System applied rule normalize

And obtained the following new goals

Proof step 2:
gstore[n] = groupblock(gndx, lax, 0), inv(gstore \ ginval), refsize-cons(gstore, range ri), ri-cons(ri, nodes(gstore ↓, ginval)), @(n, m0, m1) ∈ ri, n ∈ gstore ⊦

Proof step 1 from proof refsize-0-notin-index (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

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