[tasks]
abc prove
abc_keepgoing prove
btor_cover cover

# "Error: Does not work for combinational networks."
abc_bmc3 bmc error
# "Error: Only works for sequential networks."
abc_sim3 bmc error
# "Property index 0 is greater than the number of properties in file model/design_btor_single.btor (0)"
btor_pono bmc error

[options]
prove: mode prove
bmc: mode bmc
cover: mode cover
error: expect ERROR

[engines]
abc: abc pdr
abc_keepgoing: abc --keep-going pdr
btor_pono: btor pono
btor_cover: btor btormc
abc_bmc3: abc bmc3
abc_sim3: abc sim3

[script]
read -sv test.sv
prep -top top

[file test.sv]
module top(input i, output o);

assign o = ~i;

endmodule