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Proof step 64 from proof prepost-remove-nonend-blocks (previous step)

gstore2[n] = groupblock(gndx0, lax, m), ax1 = ax0, err = err0, gndx1 = [], inv(groupblock(gndx0, lax, m)), inv(gstore2 \ ginval), n ∈ gstore2, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪skip⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → ax = ax0 + prefixn(valid-group-nodes(gndx0), lax).to-adr(n))), err = ESUCCESS, n ∈ ginval

Heuristic symbolic execution applied rule skip right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)