rw [AIG.LawfulStreamOperator.decl_eq (f := blastVar)]
case var
w idx w✝ idx✝ : Nat
aig : AIG BVBit
h1 : idx < aig.decls.size
h2 : idx < (go aig (var idx✝)).val.aig.decls.size
⊢ (blastVar aig { ident := idx✝ }).aig.decls[idx] = aig.decls[idx]
no goals