[tasks]
btor
smt
btor_m btor multiclock
smt_m smt multiclock

[options]
mode bmc

multiclock: multiclock on

[engines]
#smtbmc
btor: btor btormc
smt: smtbmc boolector

[script]
read_verilog -formal const_clocks.sv
prep -flatten -top top

[file const_clocks.sv]
module top(
    input clk,
    input [7:0] d
);

    (* keep *)
    wire [7:0] some_const = $anyconst;

    wire [7:0] q;

    ff ff1(.clk(1'b0), .d(d), .q(q));

    initial assume (some_const == q);
    initial assume (q != 0);


    always @(posedge clk) assert(some_const == q);
endmodule

module ff(input clk, input [7:0] d, (* keep *) output reg [7:0] q);
    always @(posedge clk) q <= d;
endmodule