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Proof step 26 from proof nodes-append-subseteq (previous step)

# gndx = # lax, gstore ↓[@(n, m1, m2)] = mkgnode(nd0, m, boolvar1, boolvar2), gstore[n] = groupblock(gndx, lax, n0), ¬ boolvar0, n ∈ gstore, @(m1, m2) ∈ prefixn(valid-group-nodes(gndx), lax), n0 ≤ m0 ⊦ n ∈ ginval, @(m1, m2) ∈ prefixn(valid-group-nodes(gndx), lax + ladr ')

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 27:
# gndx = # lax, gstore[n] = groupblock(gndx, lax, n0), gstore ↓[@(n, m1, m2)] = mkgnode(nd0, m, boolvar1, boolvar2), @(m1, m2) ∈ prefixn(valid-group-nodes(gndx), lax), n ∈ gstore, n0 ≤ m0 ⊦ @(m1, m2) ∈ prefixn(valid-group-nodes(gndx), lax + ladr '), n ∈ ginval

Proof step 26 from proof nodes-append-subseteq (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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