test/regress/cli/regress0/let.cvc.smt2

   1 ; EXPECT: unsat
   2 (set-logic ALL)
   3 (set-option :incremental false)
   4 (declare-sort U 0)
   5 (declare-fun a () U)
   6 (declare-fun b () U)
   7 (declare-fun f (U) U)
   8 (check-sat-assuming ( (not (let ((_let_1 (= a b))) (not (and _let_1 (not _let_1))))) ))