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import os
import sys
import time
import tempfile
import subprocess
from contextlib import contextmanager
import pyabc
import pyabc_split
@contextmanager
def temp_file_names(N, suffix=""):
files = []
try:
for i in xrange(N):
files.append( tempfile.NamedTemporaryFile(suffix=suffix) )
yield [ f.name for f in files ]
finally:
for f in files:
f.close()
def parse_bip_status(status):
res = {}
for line in open(status, 'r'):
line = line.strip()
colon = line.find(':')
if colon < 0:
continue
field = line[:colon]
data = line[colon+2:]
res[field] = data
return res
def run_bip(args, aiger):
import redirect
with redirect.redirect():
with temp_file_names(1) as tmpnames:
args = [
'bip',
'-abc',
'-input=%s'%aiger,
'-output=%s'%tmpnames[0],
] + args;
rc = subprocess.call(args, preexec_fn=pyabc._set_death_signal)
if rc!=0:
return None
return parse_bip_status(tmpnames[0])
from pyaig import AIG, read_aiger, write_aiger, utils
def run_niklas_single(aiger, simplify, report_result, timeout=None):
orig_args = [
[ ',live', '-k=l2s', '-eng=treb-abs' ],
[ ',live', '-k=inc' ],
[ ',live', '-k=l2s', '-eng=bmc' ],
]
simplified_args = [
[ ',live', '-k=inc' ],
[ ',live', '-k=l2s', '-eng=bmc' ],
[ ',live', '-k=l2s', '-eng=treb' ],
]
with temp_file_names(1, suffix='.aig') as simple_aiger:
orig_funcs = [ pyabc_split.defer(run_bip)(a, aiger) for a in orig_args ]
simplified_funcs = [ pyabc_split.defer(run_bip)(a, simple_aiger[0]) for a in simplified_args ]
with pyabc_split.make_splitter() as splitter:
sleep_id = splitter.fork_one( lambda : time.sleep(timeout ) ) if timeout else None
ids = splitter.fork_all( orig_funcs )
kill_if_simplified = ids[1:]
simplifier_id = splitter.fork_one( pyabc_split.defer(simplify)(aiger, simple_aiger[0]) )
for id, res in splitter:
print 'NIKLAS: process %d finished with'%id, res
if id == sleep_id:
print 'NIKLAS: timeout'
return False
elif id == simplifier_id:
print 'NIKLAS: simplify ended'
if not res:
continue
print 'NIKLAS: killing'
splitter.kill(kill_if_simplified)
splitter.fork_all( simplified_funcs )
continue
elif report_result(res):
print 'NIKLAS: RESULT'
return True
return False
def run_niklas_multi(aiger, simplify, report_result):
with open(aiger, 'r') as fin:
aig = read_aiger( fin )
n_j_pos = aig.n_justice()
assert n_j_pos > 0
if n_j_pos==1:
return run_niklas_single( aiger, simplify, report_result=lambda res: report_result(0, res) )
with temp_file_names(n_j_pos, suffix='.aig') as single_aiger:
def extract(j_po):
with open(single_aiger[j_po], 'w') as fout:
write_aiger(utils.extract_justice_po(aig, j_po), fout)
for _ in pyabc_split.split_all_full( [pyabc_split.defer(extract)(i) for i in xrange(n_j_pos) ] ):
pass
unsolved = set( xrange(n_j_pos) )
timeout = 1
while unsolved:
for j_po in sorted(unsolved):
if run_niklas_single( single_aiger[j_po], simplify, report_result=lambda res: report_result(j_po, res), timeout=timeout ):
unsolved.remove(j_po)
timeout *= 2
return not unsolved
if __name__ == "__main__":
def simplify(aiger_in, aiger_out):
with temp_file_names(2, suffix='.aig') as tmp:
saved = utils.save_po_info(aiger_in, tmp[0])
pyabc.run_command( 'read_aiger %s'%tmp[0] )
pyabc.run_command( 'dc2 ; dc2 ; dc2 ; dc2' )
pyabc.run_command( 'write_aiger %s'%tmp[1] )
utils.restore_po_info( saved, tmp[1], aiger_out )
return True
def report_result(id, res):
if res and 'result' in res:
result = res['result']
if result=='proved':
print "PROVED: ", id
return True
elif result=='failed':
print "FAILED:", id
return True
return False
aiger = "test.aig"
while True:
try:
run_niklas_multi(aiger, simplify=simplify, report_result=report_result)
except:
import traceback
traceback.print_exc()
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