/
mis.py
executable file
·169 lines (144 loc) · 6.18 KB
/
mis.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
#!/usr/bin/env python3
# Copyright (C) 2016-2018 Kuldeep S. Meel
# Copyright (C) 2018 Mate Soos
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
from __future__ import with_statement # Required in 2.5
from __future__ import print_function
import os
import sys
import time
import optparse
try:
# if we're imported elsewhere, make local binaries find-able
PATH = sys.modules[__name__].__file__
PATH = PATH[:PATH.index("/mis.py")]
except:
# otherwise, we're being run directly. Assume togmus & muser2 are available
PATH = "."
usage = "usage: %prog [options] <input.cnf>"
desc = """Gives the minimal independent set of the cnf"""
def set_up_parser():
parser = optparse.OptionParser(usage=usage, description=desc)
parser.add_option("--timeout", metavar="TOUT", dest="timeout", type=int,
default=0, help="timeout for each iteration in seconds. Default: %default. 0 = no timeout")
parser.add_option("-v", default=0, type=int,
dest="verbosity", help="higher numbers for more verbosity. Default: %default")
parser.add_option("--noclean", action="store_true", default=False,
dest="noclean", help="don't clean up temporary files. Default: %default")
parser.add_option("--out", dest="outputfile", type=str, default=None,
help="Output file destination. Default: 'inputfile.ind'")
parser.add_option("--maxiter", dest="maxiter", type=int, default=1,
help="up to 'max' number of minimal independent supports will be generated. Default: %default")
parser.add_option("--useind", dest="useind", action="store_true",
default=False,
help="use independent support provided in input file")
parser.add_option("--glucose", action="store_true", default=False,
dest="glucose", help="Use glucose in muser2. Default: %default")
parser.add_option("--muser2bin", type=str, default=PATH+"/muser2-dir/src/tools/muser2/muser2",
dest="bin", help="muser2 binary to use")
return parser
def mis(inputfile=None, outputfile=None, useind=False, maxiter=1, use_glucose=False,
muser2_bin=PATH+"/muser2-dir/src/tools/muser2/muser2", timeout=0, verbosity=0,
noclean=False):
if outputfile is None:
outputfile = inputfile + ".ind"
mytime = time.time()
gmusFile = outputfile + '.gcnf'
tempOutFile = outputfile + '.tcnf'
togmus_cmd = "%s/togmus %s %s %s" % (PATH, inputfile, gmusFile, useind)
if verbosity > 0:
print("Running togmus: '%s'" % togmus_cmd)
os.system(togmus_cmd)
if verbosity > 0:
print("togmus executed in %-3.2f s" % (time.time()-mytime))
muser2_cmd = "%s -v 0 -grp -comp -%s -order 4 -T %s %s > %s" % (
muser2_bin, "glucose" if use_glucose else "minisats",
timeout, gmusFile, tempOutFile)
if verbosity > 1:
print("Using %s for muser2" % ("glucose" if use_glucose else "minisats"))
indMap = set()
min_indvars_len = None
min_indvars = None
# run maxiters iterations
for i in range(maxiter):
if verbosity > 1:
print("Iteration %u" % (i+1))
mutime = time.time()
if verbosity > 0:
print("Running muser2: '%s'" % muser2_cmd)
os.system(muser2_cmd)
if verbosity > 0:
print("muser2 finished in %-3.2f s" % (time.time()-mutime))
indvars = parseOutput(tempOutFile).strip().lstrip(" v ")
indvars_len = len(indvars.split())-1
if min_indvars_len is None:
min_indvars_len = indvars_len
if indvars not in indMap:
if verbosity > 1:
print("New indvars: %s" % indvars)
indMap.add(indvars)
if indvars_len <= min_indvars_len:
if verbosity > 1:
print("Minimal")
min_indvars = indvars
min_indvars_len = indvars_len
else:
if verbosity > 1:
print("Not minimal")
else:
if verbosity > 1:
print("Rediscovered indvars (consider reducing maxiter)")
if verbosity > 1:
print("finished %u iterations in %-3.2f" % (maxiter, time.time()-mytime))
with open(outputfile, 'a') as f:
f.write(min_indvars + "\n")
if verbosity > 0:
print("Wrote output to %s" % outputfile)
if not noclean:
if verbosity > 1:
print("Deleting temporary files")
os.unlink(tempOutFile)
os.unlink(gmusFile)
else:
if verbosity > 1:
print("noclean selected")
print("Leaving temporary files:\n%s\n%s" % (tempOutFile, gmusFile))
return min_indvars
def parseOutput(fileName):
with open(fileName, 'r') as f:
lines = f.readlines()
f.close()
for line in lines:
if (line.strip().startswith('v')):
return line
return ''
def main():
starttime = time.time()
parser = set_up_parser()
(options, args) = parser.parse_args()
if len(args) < 1:
print("ERROR: you must give a CNF input file as a parameter")
exit(-1)
inputfile = args[0]
indvars = mis(inputfile, options.outputfile, options.useind, options.maxiter,
options.glucose, options.bin, options.timeout, options.verbosity, options.noclean)
print("Finished in %-3.2f seconds" % (time.time()-starttime))
print("num independent vars:", len(indvars.split())-1)
print("** Copy-paste the following line in the top of your CNF for ApproxMC **")
print("c ind %s" % indvars)
if __name__ == "__main__":
main()