yosys/tests/arch/xilinx/fsm.ys

read_verilog ../common/fsm.v
hierarchy -top fsm
proc
flatten

design -save orig

equiv_opt -run :prove -map +/xilinx/cells_sim.v synth_xilinx -noiopad
miter -equiv -make_assert -flatten gold gate miter
sat -verify -prove-asserts -show-public -set-at 1 in_reset 1 -seq 20 -prove-skip 1 miter

design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd fsm # Constrain all select calls below inside the top module
stat
select -assert-count 1 t:BUFG
select -assert-count 6 t:FDRE
select -assert-count 1 t:LUT4
select -assert-count 4 t:LUT5
select -assert-count 1 t:LUT6
select -assert-none t:BUFG t:FDRE t:LUT4 t:LUT5 t:LUT6 %% t:* %D

design -load orig

equiv_opt -run :prove -map +/xilinx/cells_sim.v synth_xilinx -family xc3se -noiopad
miter -equiv -make_assert -flatten gold gate miter
sat -verify -prove-asserts -show-public -set-at 1 in_reset 1 -seq 20 -prove-skip 1 miter

design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd fsm # Constrain all select calls below inside the top module
stat
select -assert-count 1 t:BUFG
select -assert-count 6 t:FDRE
select -assert-count 1 t:LUT1
select -assert-count 8 t:LUT4
select -assert-count 5 t:MUXF5
select -assert-none t:BUFG t:FDRE t:LUT1 t:LUT4 t:MUXF5 %% t:* %D