Require Import Lia ZArith. Open Scope Z_scope. Unset Lia Cache. (* Expected time < 1.00s *) Goal forall (x2 x3 x : Z) (H : 0 <= 1073741824 * x + x2 - 67146752) (H0 : 0 <= -8192 + x2) (H1 : 0 <= 34816 + - x2) (H2 : 0 <= -1073741824 * x - x2 + 1073741823), False. Proof. intros. Time lia. Qed.