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Theorem inv-remove

btree-inv(rp, adr, istore, istore0, zh, ri, fi), inv-journal(nx, gstore, gstore0, ginval), inv-index(istore, istore0), inv-state(pstate, nx, gstore, istore, syn) ⊦ ⟪btree_index_remove#(key, adr0, adr, istore0, ginval, gstore, gstore0, nx, maxino, ginval0, pstate, syn; adr1, syn0, rp, zh, istore)⟫ ((∃ ri, fi. btree-inv(rp, adr, istore, istore0, zh, ri, fi)) ∧ inv-index(istore, istore0) ∧ inv-state(pstate, nx, gstore, istore, syn))