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Add "yosys-smtbmc --smtc-init --smtc-top --noinit"

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This commit is contained in:
Clifford Wolf 2017-08-04 17:09:08 +02:00
parent 1dc921d9a1
commit 48b2b376d0
1 changed files with 66 additions and 20 deletions
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86
backends/smt2/smtbmc.py
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@ -45,6 +45,9 @@ final_only = False
topmod = None
noinfo = False
presat = False
smtcinit = False
smtctop = None
noinit = False
so = SmtOpts()
@ -124,6 +127,16 @@ yosys-smtbmc [options] <yosys_smt2_output>
--dump-smtc <constr_filename>
write trace as constraints file
--smtc-init
write just the last state as initial constraint to smtc file
--smtc-top <old>[:<new>]
replace <old> with <new> in constraints dumped to smtc
file and only dump object below <old> in design hierarchy.
--noinit
do not assume initial conditions in state 0
--dump-all
when using -g or -i, create a dump file for each
step. The character '%' is replaces in all dump
@ -140,7 +153,8 @@ yosys-smtbmc [options] <yosys_smt2_output>
try:
opts, args = getopt.getopt(sys.argv[1:], so.shortopts + "t:igcm:", so.longopts +
["final-only", "assume-skipped=", "smtc=", "cex=", "aig=", "aig-noheader", "presat",
"dump-vcd=", "dump-vlogtb=", "vlogtb-top=", "dump-smtc=", "dump-all", "noinfo", "append="])
"dump-vcd=", "dump-vlogtb=", "vlogtb-top=", "dump-smtc=", "dump-all", "noinfo", "append=",
"smtc-init", "smtc-top=", "noinit"])
except:
usage()
@ -183,12 +197,22 @@ for o, a in opts:
vlogtbtop = a
elif o == "--dump-smtc":
outconstr = a
elif o == "--smtc-init":
smtcinit = True
elif o == "--smtc-top":
smtctop = a.split(":")
if len(smtctop) == 1:
smtctop.append("")
assert len(smtctop) == 2
smtctop = tuple(smtctop)
elif o == "--dump-all":
dumpall = True
elif o == "--presat":
presat = True
elif o == "--noinfo":
noinfo = True
elif o == "--noinit":
noinit = True
elif o == "--append":
append_steps = int(a)
elif o == "-i":
@ -826,34 +850,49 @@ def write_constr_trace(steps_start, steps_stop, index):
filename = outconstr.replace("%", index)
print_msg("Writing trace to constraints file: %s" % (filename))
constr_topmod = topmod
constr_state = "s@@step_idx@@"
constr_prefix = ""
if smtctop is not None:
for item in smtctop[0].split("."):
assert item in smt.modinfo[constr_topmod].cells
constr_state = "(|%s_h %s| %s)" % (constr_topmod, item, constr_state)
constr_topmod = smt.modinfo[constr_topmod].cells[item]
if smtctop[1] != "":
constr_prefix = smtctop[1] + "."
if smtcinit:
steps_start = steps_stop - 1
with open(filename, "w") as f:
primary_inputs = list()
for name in smt.modinfo[topmod].inputs:
width = smt.modinfo[topmod].wsize[name]
for name in smt.modinfo[constr_topmod].inputs:
width = smt.modinfo[constr_topmod].wsize[name]
primary_inputs.append((name, width))
if steps_start == 0:
if steps_start == 0 or smtcinit:
print("initial", file=f)
else:
print("state %d" % steps_start, file=f)
regnames = sorted(smt.hiernets(topmod, regs_only=True))
regvals = smt.get_net_list(topmod, regnames, "s%d" % steps_start)
regnames = sorted(smt.hiernets(constr_topmod, regs_only=True))
regvals = smt.get_net_list(constr_topmod, regnames, constr_state.replace("@@step_idx@@", str(steps_start)))
for name, val in zip(regnames, regvals):
print("assume (= [%s] %s)" % (".".join(name), val), file=f)
print("assume (= [%s%s] %s)" % (constr_prefix, ".".join(name), val), file=f)
mems = sorted(smt.hiermems(topmod))
mems = sorted(smt.hiermems(constr_topmod))
for mempath in mems:
abits, width, rports, wports = smt.mem_info(topmod, mempath)
abits, width, rports, wports = smt.mem_info(constr_topmod, mempath)
addr_expr_list = list()
data_expr_list = list()
for i in range(steps_start, steps_stop):
for j in range(rports):
addr_expr_list.append(smt.mem_expr(topmod, "s%d" % i, mempath, "R%dA" % j))
data_expr_list.append(smt.mem_expr(topmod, "s%d" % i, mempath, "R%dD" % j))
addr_expr_list.append(smt.mem_expr(constr_topmod, constr_state.replace("@@step_idx@@", str(i)), mempath, "R%dA" % j))
data_expr_list.append(smt.mem_expr(constr_topmod, constr_state.replace("@@step_idx@@", str(i)), mempath, "R%dD" % j))
addr_list = smt.get_list(addr_expr_list)
data_list = smt.get_list(data_expr_list)
@ -864,17 +903,18 @@ def write_constr_trace(steps_start, steps_stop, index):
addr_data[addr] = data
for addr, data in addr_data.items():
print("assume (= (select [%s] %s) %s)" % (".".join(mempath), addr, data), file=f)
print("assume (= (select [%s%s] %s) %s)" % (constr_prefix, ".".join(mempath), addr, data), file=f)
for k in range(steps_start, steps_stop):
print("", file=f)
print("state %d" % k, file=f)
if not smtcinit:
print("", file=f)
print("state %d" % k, file=f)
pi_names = [[name] for name, _ in sorted(primary_inputs)]
pi_values = smt.get_net_list(topmod, pi_names, "s%d" % k)
pi_values = smt.get_net_list(constr_topmod, pi_names, constr_state.replace("@@step_idx@@", str(k)))
for name, val in zip(pi_names, pi_values):
print("assume (= [%s] %s)" % (".".join(name), val), file=f)
print("assume (= [%s%s] %s)" % (constr_prefix, ".".join(name), val), file=f)
def write_trace(steps_start, steps_stop, index):
@ -1034,8 +1074,11 @@ elif covermode:
smt.write("(assert %s)" % get_constr_expr(constr_assumes, step))
if step == 0:
smt.write("(assert (|%s_i| s0))" % (topmod))
smt.write("(assert (|%s_is| s0))" % (topmod))
if noinit:
smt.write("(assert (not (|%s_is| s%d)))" % (topmod, step))
else:
smt.write("(assert (|%s_i| s0))" % (topmod))
smt.write("(assert (|%s_is| s0))" % (topmod))
else:
smt.write("(assert (|%s_t| s%d s%d))" % (topmod, step-1, step))
@ -1114,8 +1157,11 @@ else: # not tempind, covermode
smt.write("(assert %s)" % get_constr_expr(constr_assumes, step))
if step == 0:
smt.write("(assert (|%s_i| s0))" % (topmod))
smt.write("(assert (|%s_is| s0))" % (topmod))
if noinit:
smt.write("(assert (not (|%s_is| s%d)))" % (topmod, step))
else:
smt.write("(assert (|%s_i| s0))" % (topmod))
smt.write("(assert (|%s_is| s0))" % (topmod))
else:
smt.write("(assert (|%s_t| s%d s%d))" % (topmod, step-1, step))