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Proof step 13 from proof refine-read-gnd (previous step)

remove-refsize0(gstore2) = gstore2, remove-refsize0(istore1) = istore1, elems nx0 ∩ ginval0 = ∅, dom gstore2 ∪ elems nx0 = dom gstore0 ∪ ginval0, btree-inv(rp, adr1, istore2, istore1, zh, fi, fi0), inv(gstore0 \ ginval0), inv(gstore2), inv(istore2), inv(istore1), ri-inj(fi), ri-inj(fi0), @(m, m0, m1) ∈ gstore0, istore1 ⊑ istore2, pstate.journal? → nx0 ≠ [] ∧ pstate.lnum = nx0.last ∧ pstate.lnum ∈ gstore0, pstate.index? → pstate.lnum ∈ istore2, pstate = unbuffered → syn0, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; if err = ESUCCESS then gnd := gstore0[@(m, m0, m1)] else gnd := ?⟫ ⟨index_read_gnd#(@(m, m0, m1), fi, fi0, ginval0, gstore0, gstore2, nx0, maxino0, ginval2, syn0; gnd0; err1)⟩ (gnd = gnd0 ∧ err = err1), dups(nx0), m ∈ ginval0

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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