Prevent reduction of Std.Sat.AIG.denote

Author: nomeata

src/Std/Sat/AIG/Basic.lean

@@ -485,6 +485,7 @@ where
       let lval := go lhs.gate decls assign (by omega) h2
       let rval := go rhs.gate decls assign (by omega) h2
       xor lval lhs.invert && xor rval rhs.invert
+  termination_by (x, 0) -- Don't allow reduction, we have large concrete gate entries
 
 /--
 Denotation of an `AIG` at a specific `Entrypoint`.