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Added $anyconst support to yosys-smtbmc

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This commit is contained in:
Clifford Wolf 2016-08-30 19:27:42 +02:00
parent 6f41e5277d
commit aa25a4cec6
7 changed files with 58 additions and 2 deletions
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4
backends/smt2/smt2.cc
View file

@ -420,6 +420,8 @@ struct Smt2Worker
if (cell->type == "$anyconst")
{
registers.insert(cell);
decls.push_back(stringf("; yosys-smt2-%s %s#%d %s\n", cell->type.c_str() + 1, get_id(module), idcounter,
cell->attributes.count("\\src") ? cell->attributes.at("\\src").decode_string().c_str() : get_id(cell)));
decls.push_back(stringf("(declare-fun |%s#%d| (|%s_s|) (_ BitVec %d)) ; %s\n",
get_id(module), idcounter, get_id(module), GetSize(cell->getPort("\\Y")), log_signal(cell->getPort("\\Y"))));
register_bv(cell->getPort("\\Y"), idcounter++);
@ -669,7 +671,7 @@ struct Smt2Worker
string name_a = get_bool(cell->getPort("\\A"));
string name_en = get_bool(cell->getPort("\\EN"));
decls.push_back(stringf("; yosys-smt2-%s %s#%d %s\n", cell->type.c_str() + 1, get_id(module), idcounter,
cell->attributes.count("\\src") ? cell->attributes.at("\\src").decode_string().c_str() : get_id(cell)));
cell->attributes.count("\\src") ? cell->attributes.at("\\src").decode_string().c_str() : get_id(cell)));
decls.push_back(stringf("(define-fun |%s#%d| ((state |%s_s|)) Bool (or %s (not %s))) ; %s\n",
get_id(module), idcounter, get_id(module), name_a.c_str(), name_en.c_str(), get_id(cell)));
if (cell->type == "$assert")

20
backends/smt2/smtbmc.py
View file

@ -504,6 +504,20 @@ def print_failed_asserts(state, final=False):
print_failed_asserts_worker(topmod, "s%d" % state, topmod)
def print_anyconsts_worker(mod, state, path):
assert mod in smt.modinfo
for cellname, celltype in smt.modinfo[mod].cells.items():
print_anyconsts_worker(celltype, "(|%s_h %s| %s)" % (mod, cellname, state), path + "." + cellname)
for fun, info in smt.modinfo[mod].anyconsts.items():
print("%s Value for anyconst in %s (%s): %d" % (smt.timestamp(), path, info, smt.bv2int(smt.get("(|%s| %s)" % (fun, state)))))
def print_anyconsts(state):
print_anyconsts_worker(topmod, "s%d" % state, topmod)
if tempind:
retstatus = False
skip_counter = step_size
@ -535,10 +549,12 @@ if tempind:
if smt.check_sat() == "sat":
if step == 0:
print("%s Temporal induction failed!" % smt.timestamp())
print_anyconsts(num_steps)
print_failed_asserts(num_steps)
write_trace(step, num_steps+1, '%')
elif dumpall:
print_anyconsts(num_steps)
print_failed_asserts(num_steps)
write_trace(step, num_steps+1, "%d" % step)
@ -598,6 +614,7 @@ else: # not tempind
if smt.check_sat() == "sat":
print("%s BMC failed!" % smt.timestamp())
print_anyconsts(step)
for i in range(step, last_check_step+1):
print_failed_asserts(i)
write_trace(0, last_check_step+1, '%')
@ -623,6 +640,7 @@ else: # not tempind
if smt.check_sat() == "sat":
print("%s BMC failed!" % smt.timestamp())
print_anyconsts(i)
print_failed_asserts(i, final=True)
write_trace(0, i+1, '%')
retstatus = False
@ -644,11 +662,13 @@ else: # not tempind
break
elif dumpall:
print_anyconsts(0)
write_trace(0, last_check_step+1, "%d" % step)
step += step_size
if gentrace:
print_anyconsts(0)
write_trace(0, num_steps, '%')

4
backends/smt2/smtio.py
View file

@ -32,6 +32,7 @@ class smtmodinfo:
self.wsize = dict()
self.cells = dict()
self.asserts = dict()
self.anyconsts = dict()
class smtio:
def __init__(self, solver=None, debug_print=None, debug_file=None, timeinfo=None, opts=None):
@ -137,6 +138,9 @@ class smtio:
if fields[1] == "yosys-smt2-assert":
self.modinfo[self.curmod].asserts[fields[2]] = fields[3]
if fields[1] == "yosys-smt2-anyconst":
self.modinfo[self.curmod].anyconsts[fields[2]] = fields[3]
def hiernets(self, top, regs_only=False):
def hiernets_worker(nets, mod, cursor):
for netname in sorted(self.modinfo[mod].wsize.keys()):