Trace number 3275854

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
SAT07 reference solver: minisat SAT 2007UNSAT 4526.03 4525.98

General information on the benchmark

NameSAT03/handmade/anton/UNSAT/
SGI_30_70_19_80_8-log.shuffled-as.sat03-143.cnf
MD5SUM3aff0c2163848e3eed6bc22fc2c30cdf
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1801.9
Satisfiable
(Un)Satisfiability was proved
Number of variables95
Number of clauses36888
Sum of the clauses size368690
Maximum clause length10
Minimum clause length5
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 538
Number of clauses of size over 536850

Solver Data

0.00/0.00	c This is MiniSat 2.0 (Feb 1 2007, SAT-Competition version)
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.00	c |  Number of variables:  95                                                   |
0.00/0.00	c |  Number of clauses:    36888                                                |
0.00/0.04	c |  Parsing time:         0.04         s                                       |
4.39/4.47	c ============================[ Search Statistics ]==============================
4.39/4.47	c | Conflicts |          ORIGINAL         |          LEARNT          | Progress |
4.39/4.47	c |           |    Vars  Clauses Literals |    Limit  Clauses Lit/Cl |          |
4.39/4.47	c ===============================================================================
4.39/4.47	c |         0 |      95    26892   229906 |     8964        0    nan |  0.000 % |
4.39/4.47	c |       100 |      95    26892   229906 |     9860      100     17 |  0.011 % |
4.39/4.48	c |       250 |      95    26892   229906 |    10846      250     19 |  0.011 % |
4.39/4.48	c |       475 |      95    26892   229906 |    11931      475     20 |  0.011 % |
4.39/4.49	c |       812 |      95    26892   229906 |    13124      812     20 |  0.011 % |
4.49/4.50	c |      1318 |      95    26892   229906 |    14436     1318     19 |  0.011 % |
4.49/4.52	c |      2077 |      95    26892   229906 |    15880     2077     19 |  0.011 % |
4.49/4.54	c |      3216 |      95    26892   229906 |    17468     3216     19 |  0.011 % |
4.49/4.59	c |      4925 |      95    26892   229906 |    19215     4925     20 |  0.011 % |
4.59/4.66	c |      7487 |      95    26892   229906 |    21136     7487     20 |  0.011 % |
4.69/4.78	c |     11331 |      95    26892   229906 |    23250    11331     20 |  0.011 % |
4.99/5.01	c |     17097 |      95    26892   229906 |    25575    17097     21 |  0.011 % |
5.39/5.46	c |     25748 |      95    26892   229906 |    28132    12235     21 |  0.011 % |
6.00/6.09	c |     38723 |      95    26892   229906 |    30946    25210     21 |  0.011 % |
7.19/7.27	c |     58184 |      95    26892   229906 |    34040    26337     22 |  0.011 % |
9.49/9.56	c |     87376 |      95    26892   229906 |    37444    16873     21 |  0.011 % |
12.50/12.52	c |    131165 |      95    26892   229906 |    41189    13733     20 |  0.011 % |
17.39/17.41	c |    196850 |      95    26892   229906 |    45308    26898     20 |  0.011 % |
24.99/25.09	c |    295376 |      95    26892   229906 |    49839    32084     19 |  0.011 % |
37.49/37.54	c |    443165 |      95    26892   229906 |    54823    42567     19 |  0.011 % |
56.29/56.32	c |    664848 |      95    26892   229906 |    60305    24526     19 |  0.011 % |
85.59/85.63	c |    997373 |      95    26892   229906 |    66335    41360     19 |  0.011 % |
133.39/133.49	c |   1496162 |      95    26892   229906 |    72969    39554     17 |  0.011 % |
205.29/205.30	c |   2244344 |      95    26892   229906 |    80266    43301     18 |  0.011 % |
315.78/315.82	c |   3366620 |      95    26892   229906 |    88293    64621     18 |  0.011 % |
497.49/497.51	c |   5050031 |      95    26892   229906 |    97122    78510     18 |  0.011 % |
797.40/797.46	c |   7575147 |      95    26892   229906 |   106834    22553     18 |  0.011 % |
1245.80/1245.89	c |  11362823 |      95    26892   229906 |   117517    35365     15 |  0.011 % |
2005.21/2005.28	c |  17044335 |      95    26892   229906 |   129269    86435     17 |  0.022 % |
3240.13/3240.18	c |  25566606 |      94    25540   218307 |   142196   100603     19 |  1.075 % |
4525.95/4525.97	c ===============================================================================
4525.95/4525.97	c restarts              : 30
4525.95/4525.97	c conflicts             : 34135638       (7542 /sec)
4525.95/4525.97	c decisions             : 40132200       (1.84 % random) (8867 /sec)
4525.95/4525.97	c propagations          : 214281386      (47344 /sec)
4525.95/4525.97	c conflict literals     : 585574332      (26.75 % deleted)
4525.95/4525.97	c Memory used           : 35.89 MB
4525.95/4525.97	c CPU time              : 4526 s
4525.95/4525.97	c 
4525.95/4525.97	s UNSATISFIABLE

Verifier Data

No possible verification on an UNSAT instance

Watcher Data

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 935)

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.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3275854-1303657951/watcher-3275854-1303657951 -o /tmp/evaluation-result-3275854-1303657951/solver-3275854-1303657951 -C 5000 -W 5100 -M 15500 --output-limit 1,15 HOME/minisat_noassertions HOME/instance-3275854-1303657951.cnf 

running on 4 cores: 0,2,4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 5100 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.00 2.00 2.00 2/175 7178
/proc/meminfo: memFree=19179340/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=2256 CPUtime=0 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 521 0 0 0 0 0 0 0 25 0 1 0 477394760 2310144 477 33554432000 134512640 135048876 4291055632 18446744073709551615 134683871 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 564 477 50 131 0 431 0

[startup+0.105895 s]
/proc/loadavg: 2.00 2.00 2.00 2/175 7178
/proc/meminfo: memFree=19179340/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=6296 CPUtime=0.1 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 1516 0 0 0 10 0 0 0 25 0 1 0 477394760 6447104 1472 33554432000 134512640 135048876 4291055632 18446744073709551615 134529686 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1574 1472 62 131 0 1441 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 6296

[startup+0.200881 s]
/proc/loadavg: 2.00 2.00 2.00 2/175 7178
/proc/meminfo: memFree=19179340/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=6376 CPUtime=0.19 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 1520 0 0 0 19 0 0 0 25 0 1 0 477394760 6529024 1476 33554432000 134512640 135048876 4291055632 18446744073709551615 134529400 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1594 1476 62 131 0 1461 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 6376

[startup+0.300865 s]
/proc/loadavg: 2.00 2.00 2.00 2/175 7178
/proc/meminfo: memFree=19179340/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=6376 CPUtime=0.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 1523 0 0 0 29 0 0 0 25 0 1 0 477394760 6529024 1479 33554432000 134512640 135048876 4291055632 18446744073709551615 134527013 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1594 1479 62 131 0 1461 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 6376

[startup+0.700793 s]
/proc/loadavg: 2.00 2.00 2.00 2/175 7178
/proc/meminfo: memFree=19179340/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=6376 CPUtime=0.69 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 1534 0 0 0 69 0 0 0 25 0 1 0 477394760 6529024 1490 33554432000 134512640 135048876 4291055632 18446744073709551615 134529347 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1594 1490 62 131 0 1461 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 6376

[startup+1.50066 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7179
/proc/meminfo: memFree=19173872/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=6496 CPUtime=1.49 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 1549 0 0 0 149 0 0 0 25 0 1 0 477394760 6651904 1505 33554432000 134512640 135048876 4291055632 18446744073709551615 134529400 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1624 1505 62 131 0 1491 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 6496

[startup+3.1638 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7179
/proc/meminfo: memFree=19173376/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=6496 CPUtime=3.16 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 1558 0 0 0 316 0 0 0 25 0 1 0 477394760 6651904 1514 33554432000 134512640 135048876 4291055632 18446744073709551615 134529224 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1624 1514 62 131 0 1491 0
Current children cumulated CPU time (s) 3.16
Current children cumulated vsize (KiB) 6496

[startup+6.30085 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7179
/proc/meminfo: memFree=19172520/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=7824 CPUtime=6.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 2006 0 0 0 629 0 0 0 25 0 1 0 477394760 8011776 1841 33554432000 134512640 135048876 4291055632 18446744073709551615 134546839 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 1956 1841 66 131 0 1823 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 7824

[startup+12.7008 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7179
/proc/meminfo: memFree=19170316/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=9368 CPUtime=12.69 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 2382 0 0 0 1269 0 0 0 25 0 1 0 477394760 9592832 2217 33554432000 134512640 135048876 4291055632 18446744073709551615 134546878 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 2342 2217 66 131 0 2209 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 9368

[startup+25.5006 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7180
/proc/meminfo: memFree=19168812/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=10924 CPUtime=25.49 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 2737 0 0 0 2549 0 0 0 25 0 1 0 477394760 11186176 2572 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 2731 2572 66 131 0 2598 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 10924

[startup+51.1063 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7180
/proc/meminfo: memFree=19166928/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=12764 CPUtime=51.09 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 3206 0 0 0 5109 0 0 0 25 0 1 0 477394760 13070336 3041 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 3191 3041 66 131 0 3058 0
Current children cumulated CPU time (s) 51.09
Current children cumulated vsize (KiB) 12764

[startup+102.301 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7182
/proc/meminfo: memFree=19164564/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=15088 CPUtime=102.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 3688 0 0 0 10229 0 0 0 25 0 1 0 477394760 15450112 3523 33554432000 134512640 135048876 4291055632 18446744073709551615 134546931 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 3772 3523 66 131 0 3639 0
Current children cumulated CPU time (s) 102.29
Current children cumulated vsize (KiB) 15088

[startup+162.301 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7183
/proc/meminfo: memFree=19163192/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=16424 CPUtime=162.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 4015 0 0 0 16229 0 0 0 25 0 1 0 477394760 16818176 3850 33554432000 134512640 135048876 4291055632 18446744073709551615 134546999 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 4106 3850 66 131 0 3973 0
Current children cumulated CPU time (s) 162.29
Current children cumulated vsize (KiB) 16424

[startup+222.3 s]
/proc/loadavg: 2.04 2.01 2.00 3/176 7185
/proc/meminfo: memFree=19161932/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=17836 CPUtime=222.28 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 4319 0 0 0 22228 0 0 0 25 0 1 0 477394760 18264064 4154 33554432000 134512640 135048876 4291055632 18446744073709551615 134552468 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 4459 4154 66 131 0 4326 0
Current children cumulated CPU time (s) 222.28
Current children cumulated vsize (KiB) 17836

[startup+282.3 s]
/proc/loadavg: 2.01 2.01 2.00 3/176 7186
/proc/meminfo: memFree=19160804/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=19052 CPUtime=282.28 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 4597 0 0 0 28228 0 0 0 25 0 1 0 477394760 19509248 4432 33554432000 134512640 135048876 4291055632 18446744073709551615 134546894 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 4763 4432 66 131 0 4630 0
Current children cumulated CPU time (s) 282.28
Current children cumulated vsize (KiB) 19052

[startup+342.3 s]
/proc/loadavg: 2.08 2.02 2.00 3/176 7188
/proc/meminfo: memFree=19159796/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=20360 CPUtime=342.28 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 4857 0 0 0 34228 0 0 0 25 0 1 0 477394760 20848640 4692 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 5090 4692 66 131 0 4957 0
Current children cumulated CPU time (s) 342.28
Current children cumulated vsize (KiB) 20360

[startup+402.301 s]
/proc/loadavg: 2.02 2.01 2.00 3/176 7190
/proc/meminfo: memFree=19159036/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=20928 CPUtime=402.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 4979 0 0 0 40229 0 0 0 25 0 1 0 477394760 21430272 4814 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 5232 4814 66 131 0 5099 0
Current children cumulated CPU time (s) 402.29
Current children cumulated vsize (KiB) 20928

[startup+462.301 s]
/proc/loadavg: 2.01 2.01 2.00 3/176 7191
/proc/meminfo: memFree=19158404/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=21416 CPUtime=462.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 5094 0 0 0 46229 0 0 0 25 0 1 0 477394760 21929984 4929 33554432000 134512640 135048876 4291055632 18446744073709551615 134546990 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 5354 4929 66 131 0 5221 0
Current children cumulated CPU time (s) 462.29
Current children cumulated vsize (KiB) 21416

[startup+522.301 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7193
/proc/meminfo: memFree=19157400/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=22584 CPUtime=522.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 5347 0 0 0 52229 0 0 0 25 0 1 0 477394760 23126016 5174 33554432000 134512640 135048876 4291055632 18446744073709551615 134545993 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 5646 5174 66 131 0 5513 0
Current children cumulated CPU time (s) 522.29
Current children cumulated vsize (KiB) 22584

[startup+582.301 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7194
/proc/meminfo: memFree=19156644/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=23072 CPUtime=582.29 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 5443 0 0 0 58229 0 0 0 25 0 1 0 477394760 23625728 5270 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 5768 5270 66 131 0 5635 0
Current children cumulated CPU time (s) 582.29
Current children cumulated vsize (KiB) 23072


################
# More data... #
################

/proc/meminfo: memFree=19061916/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36068 CPUtime=3882.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8325 0 0 0 388232 2 0 0 25 0 1 0 477394760 36933632 8091 33554432000 134512640 135048876 4291055632 18446744073709551615 134546847 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9017 8091 66 131 0 8884 0
Current children cumulated CPU time (s) 3882.34
Current children cumulated vsize (KiB) 36068

[startup+3942.3 s]
/proc/loadavg: 2.04 2.01 2.00 3/176 7324
/proc/meminfo: memFree=19061396/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36068 CPUtime=3942.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8325 0 0 0 394232 2 0 0 25 0 1 0 477394760 36933632 8091 33554432000 134512640 135048876 4291055632 18446744073709551615 134545993 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9017 8091 66 131 0 8884 0
Current children cumulated CPU time (s) 3942.34
Current children cumulated vsize (KiB) 36068

[startup+4002.3 s]
/proc/loadavg: 2.01 2.01 2.00 3/176 7326
/proc/meminfo: memFree=19061128/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36068 CPUtime=4002.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8343 0 0 0 400232 2 0 0 25 0 1 0 477394760 36933632 8109 33554432000 134512640 135048876 4291055632 18446744073709551615 134545984 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9017 8109 66 131 0 8884 0
Current children cumulated CPU time (s) 4002.34
Current children cumulated vsize (KiB) 36068

[startup+4062.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7327
/proc/meminfo: memFree=19060736/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36068 CPUtime=4062.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8343 0 0 0 406232 2 0 0 25 0 1 0 477394760 36933632 8109 33554432000 134512640 135048876 4291055632 18446744073709551615 134545962 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9017 8109 66 131 0 8884 0
Current children cumulated CPU time (s) 4062.34
Current children cumulated vsize (KiB) 36068

[startup+4122.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7329
/proc/meminfo: memFree=19060584/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36208 CPUtime=4122.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8374 0 0 0 412232 2 0 0 25 0 1 0 477394760 37076992 8140 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9052 8140 66 131 0 8919 0
Current children cumulated CPU time (s) 4122.34
Current children cumulated vsize (KiB) 36208

[startup+4182.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7330
/proc/meminfo: memFree=19049020/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36508 CPUtime=4182.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8460 0 0 0 418232 2 0 0 25 0 1 0 477394760 37384192 8218 33554432000 134512640 135048876 4291055632 18446744073709551615 134546873 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9127 8218 66 131 0 8994 0
Current children cumulated CPU time (s) 4182.34
Current children cumulated vsize (KiB) 36508

[startup+4242.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7332
/proc/meminfo: memFree=19047268/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36628 CPUtime=4242.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8479 0 0 0 424232 2 0 0 25 0 1 0 477394760 37507072 8237 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9157 8237 66 131 0 9024 0
Current children cumulated CPU time (s) 4242.34
Current children cumulated vsize (KiB) 36628

[startup+4302.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7334
/proc/meminfo: memFree=19046380/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4302.34 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8493 0 0 0 430232 2 0 0 25 0 1 0 477394760 37629952 8251 33554432000 134512640 135048876 4291055632 18446744073709551615 134545952 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8251 66 131 0 9054 0
Current children cumulated CPU time (s) 4302.34
Current children cumulated vsize (KiB) 36748

[startup+4362.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7335
/proc/meminfo: memFree=19045992/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4362.35 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8494 0 0 0 436233 2 0 0 25 0 1 0 477394760 37629952 8252 33554432000 134512640 135048876 4291055632 18446744073709551615 134547004 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8252 66 131 0 9054 0
Current children cumulated CPU time (s) 4362.35
Current children cumulated vsize (KiB) 36748

[startup+4422.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7337
/proc/meminfo: memFree=19046228/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4422.35 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 442233 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546873 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4422.35
Current children cumulated vsize (KiB) 36748

[startup+4482.31 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7338
/proc/meminfo: memFree=19046460/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4482.35 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 448233 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546920 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4482.35
Current children cumulated vsize (KiB) 36748

Solver just ended. Dumping a history of the last processes samples

[startup+4506.4 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7339
/proc/meminfo: memFree=19046328/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4506.45 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 450643 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546873 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4506.45
Current children cumulated vsize (KiB) 36748

[startup+4519.2 s]
/proc/loadavg: 2.00 2.00 2.00 4/176 7339
/proc/meminfo: memFree=19046328/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4519.25 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 451923 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546929 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4519.25
Current children cumulated vsize (KiB) 36748

[startup+4522.4 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7340
/proc/meminfo: memFree=19046204/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4522.45 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 452243 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546105 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4522.45
Current children cumulated vsize (KiB) 36748

[startup+4524 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7340
/proc/meminfo: memFree=19046324/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4524.05 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 452403 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4524.05
Current children cumulated vsize (KiB) 36748

[startup+4524.8 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7340
/proc/meminfo: memFree=19046324/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4524.85 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 452483 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546920 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4524.85
Current children cumulated vsize (KiB) 36748

[startup+4525.6 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7340
/proc/meminfo: memFree=19046324/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4525.65 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 452563 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546074 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4525.65
Current children cumulated vsize (KiB) 36748

[startup+4525.8 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7340
/proc/meminfo: memFree=19046324/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4525.85 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 452583 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134547076 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4525.85
Current children cumulated vsize (KiB) 36748

[startup+4525.9 s]
/proc/loadavg: 2.00 2.00 2.00 3/176 7340
/proc/meminfo: memFree=19046324/32951132 swapFree=67111524/67111528
[pid=7178] ppid=7176 vsize=36748 CPUtime=4525.95 cores=0,2,4,6
/proc/7178/stat : 7178 (minisat_noasser) R 7176 7178 5845 0 -1 4202496 8498 0 0 0 452593 2 0 0 25 0 1 0 477394760 37629952 8256 33554432000 134512640 135048876 4291055632 18446744073709551615 134546870 0 0 4096 3 0 0 0 17 2 0 0 0
/proc/7178/statm: 9187 8256 66 131 0 9054 0
Current children cumulated CPU time (s) 4525.95
Current children cumulated vsize (KiB) 36748

Child status: 20
Real time (s): 4525.98
CPU time (s): 4526.03
CPU user time (s): 4526.01
CPU system time (s): 0.029995
CPU usage (%): 100.001
Max. virtual memory (cumulated for all children) (KiB): 36748

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4526
system time used= 0.029995
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8504
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 5
involuntary context switches= 6697

runsolver used 6.572 second user time and 14.6418 second system time

The end

Launcher Data

Begin job on node129 at 2011-04-24 17:12:31
IDJOB=3275854
IDBENCH=83899
IDSOLVER=1678
FILE ID=node129/3275854-1303657951
RUNJOBID= node129-1303650742-6642
PBS_JOBID= 13150719
Free space on /tmp= 66404 MiB

SOLVER NAME= SAT07 reference solver: minisat SAT 2007
BENCH NAME= SAT03/handmade/anton/UNSAT/SGI_30_70_19_80_8-log.shuffled-as.sat03-143.cnf
COMMAND LINE= HOME/minisat_noassertions BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3275854-1303657951/watcher-3275854-1303657951 -o /tmp/evaluation-result-3275854-1303657951/solver-3275854-1303657951 -C 5000 -W 5100 -M 15500 --output-limit 1,15  HOME/minisat_noassertions HOME/instance-3275854-1303657951.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 3aff0c2163848e3eed6bc22fc2c30cdf
RANDOM SEED=1196459824

node129.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.66
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.831
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951132 kB
MemFree:      19179612 kB
Buffers:       1219028 kB
Cached:       11808432 kB
SwapCached:          4 kB
Active:        1782400 kB
Inactive:     11328068 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      19179612 kB
SwapTotal:    67111528 kB
SwapFree:     67111524 kB
Dirty:            2748 kB
Writeback:           0 kB
AnonPages:       82412 kB
Mapped:          15660 kB
Slab:           598116 kB
PageTables:       4720 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   231108 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296000 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66404 MiB
End job on node129 at 2011-04-24 18:27:57