[tasks]
pass
fail
preunsat

[options]
mode bmc
depth 1

pass: expect pass
fail: expect fail
preunsat: expect error

[engines]
smtbmc boolector

[script]
fail: read -define FAIL
preunsat: read -define PREUNSAT
read -sv test.sv
prep -top top

[file test.sv]
module test(input foo);
always @* assert(foo);
`ifdef FAIL
always @* assert(!foo);
`endif
`ifdef PREUNSAT
always @* assume(!foo);
`endif
endmodule

module top();
test test_i (
.foo(1'b1)
);
endmodule