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Proof step 83 from proof prepost-gc-referenced-nodes (previous step)

# lax = # gndx0 + # gndx2 + 1, # ax2 = # gndx2, lax.to-adr(lnum) = ax + adr1 ' + ax2, jvalid ↔ nd.key ∈ ri, gstore2[lnum] = groupblock(gndx0 + mkgnode(nd, m0, boolvar, boolvar0) ' + gndx2, lax, m), err = err0, err = ESUCCESS, jvalid, ndx = nodes(gstore2 ↓, ginval)[referenced-adrs(ax, ri)], inv(groupblock(gndx0 + mkgnode(nd, m0, boolvar, boolvar0) ' + gndx2, lax, m)), inv(gstore2 \ ginval), ri-cons(ri, nodes(gstore2 ↓, ginval)), nd.key ∈ ri, lnum ∈ gstore2, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ lnum ∈ ginval, nd.key ∈ ri

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

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