[options]
mode bmc
depth 1
expect fail

[engines]
smtbmc

[script]
read -formal test.v
prep -top top
cutpoint -blackbox

[file test.v]
(* blackbox *)
module submod #(parameter WIDTH = 24) (input [WIDTH-1:0] a, output [WIDTH-1:0] b);
endmodule

module top;
	(*anyconst *) wire [7:0] a;
    wire [7:0] b;

	submod #(.WIDTH(8)) submod(
		.a(a),
		.b(b)
	);

	always @* begin
		assert(~a == b);
	end
endmodule