Trace number 3282265

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
rcl 2011-04-01? (TO) 1299.98 1300.01

General information on the benchmark

NameAPPLICATIONS/bitverif/
maxxororand/maxxororand064.cnf
MD5SUM49dbd2fb16b3d5ce554d30c48729a56d
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables92464
Number of clauses276623
Sum of the clauses size645451
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 2184414
Number of clauses of size 392207
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data

0.00/0.00	c Parsing...
0.00/0.11	c ==============================================================================
0.00/0.11	c |           |     ORIGINAL     |              LEARNT              |          |
0.00/0.11	c | Conflicts | Clauses Literals |   Limit Clauses Literals  Lit/Cl | Progress |
0.00/0.11	c ==============================================================================
0.00/0.11	c |         0 |  276621   645449 |   82986       0        0     nan |  0.000 % |
1.29/1.38	c |         0 |  136416   475019 |      --       0       --      -- |     --   | -140183/-170377
1.29/1.38	c ==============================================================================
1.29/1.38	c Result  :   #vars: 24904   #clauses: 136416   #literals: 475019
1.29/1.38	c CPU time:   1.34979 s
1.29/1.38	c ==============================================================================

Verifier Data

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer: <no 's ' line found>

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-3282265-1303752937/watcher-3282265-1303752937 -o /tmp/evaluation-result-3282265-1303752937/solver-3282265-1303752937 -C 2400 -W 1300 -M 7680 ./esg_static.sh HOME/instance-3282265-1303752937.cnf 

running on 2 cores: 5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 3.53 3.86 3.51 4/188 5313
/proc/meminfo: memFree=14811152/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=0 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 328 0 0 0 0 0 0 0 21 0 1 0 486894512 8908800 249 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 249 209 178 0 68 0

[startup+0.0727439 s]
/proc/loadavg: 3.53 3.86 3.51 4/188 5313
/proc/meminfo: memFree=14811152/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=0 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 328 0 0 0 0 0 0 0 21 0 1 0 486894512 8908800 249 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 249 209 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.100743 s]
/proc/loadavg: 3.53 3.86 3.51 4/188 5313
/proc/meminfo: memFree=14811152/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=0 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 328 0 0 0 0 0 0 0 21 0 1 0 486894512 8908800 249 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 249 209 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.300702 s]
/proc/loadavg: 3.53 3.86 3.51 4/188 5313
/proc/meminfo: memFree=14811152/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=0 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 328 0 0 0 0 0 0 0 21 0 1 0 486894512 8908800 249 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 249 209 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.70063 s]
/proc/loadavg: 3.53 3.86 3.51 4/188 5313
/proc/meminfo: memFree=14811152/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=0 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 328 0 0 0 0 0 0 0 21 0 1 0 486894512 8908800 249 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 249 209 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+1.50045 s]
/proc/loadavg: 3.53 3.86 3.51 5/194 5323
/proc/meminfo: memFree=14711160/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
Current children cumulated CPU time (s) 1.46
Current children cumulated vsize (KiB) 8700

[startup+3.10019 s]
/proc/loadavg: 3.53 3.86 3.51 5/194 5325
/proc/meminfo: memFree=14759164/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=21904 CPUtime=1.6 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 3879 0 0 0 160 0 0 0 24 0 1 0 486894660 22429696 3789 33554432000 4194304 4218580 140736607431584 18446744073709551615 4213840 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 5476 3789 131 6 0 3946 0
Current children cumulated CPU time (s) 3.06
Current children cumulated vsize (KiB) 30604

[startup+6.30062 s]
/proc/loadavg: 3.57 3.87 3.52 5/194 5325
/proc/meminfo: memFree=14752300/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=23228 CPUtime=4.8 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 4232 0 0 0 480 0 0 0 25 0 1 0 486894660 23785472 4142 33554432000 4194304 4218580 140736607431584 18446744073709551615 4210066 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 5807 4142 131 6 0 4277 0
Current children cumulated CPU time (s) 6.26
Current children cumulated vsize (KiB) 31928

[startup+12.7004 s]
/proc/loadavg: 3.60 3.87 3.52 5/194 5325
/proc/meminfo: memFree=14739464/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=25112 CPUtime=11.21 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 4690 0 0 0 1120 1 0 0 25 0 1 0 486894660 25714688 4600 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208174 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 6278 4600 131 6 0 4748 0
Current children cumulated CPU time (s) 12.67
Current children cumulated vsize (KiB) 33812

[startup+25.5011 s]
/proc/loadavg: 3.69 3.87 3.52 5/194 5326
/proc/meminfo: memFree=14721376/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=35120 CPUtime=24.01 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 7191 0 0 0 2399 2 0 0 25 0 1 0 486894660 35962880 7101 33554432000 4194304 4218580 140736607431584 18446744073709551615 4209616 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 8780 7101 131 6 0 7250 0
Current children cumulated CPU time (s) 25.47
Current children cumulated vsize (KiB) 43820

[startup+51.1004 s]
/proc/loadavg: 3.80 3.88 3.54 5/194 5326
/proc/meminfo: memFree=14711148/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=35248 CPUtime=49.61 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 7230 0 0 0 4959 2 0 0 25 0 1 0 486894660 36093952 7135 33554432000 4194304 4218580 140736607431584 18446744073709551615 4210238 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 8812 7135 131 6 0 7282 0
Current children cumulated CPU time (s) 51.07
Current children cumulated vsize (KiB) 43948

[startup+102.307 s]
/proc/loadavg: 3.97 3.91 3.56 5/194 5328
/proc/meminfo: memFree=14683924/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=47984 CPUtime=100.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 10454 0 0 0 10079 3 0 0 25 0 1 0 486894660 49135616 10335 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208446 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 11996 10335 131 6 0 10466 0
Current children cumulated CPU time (s) 102.28
Current children cumulated vsize (KiB) 56684

[startup+162.301 s]
/proc/loadavg: 4.05 3.94 3.59 5/194 5329
/proc/meminfo: memFree=14648568/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=56124 CPUtime=160.81 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 12517 0 0 0 16077 4 0 0 25 0 1 0 486894660 57470976 12349 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208446 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 14031 12349 131 6 0 12501 0
Current children cumulated CPU time (s) 162.27
Current children cumulated vsize (KiB) 64824

[startup+222.301 s]
/proc/loadavg: 4.02 3.95 3.62 5/194 5331
/proc/meminfo: memFree=14629312/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=64568 CPUtime=220.81 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 14703 0 0 0 22076 5 0 0 25 0 1 0 486894660 66117632 14459 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208438 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 16142 14459 131 6 0 14612 0
Current children cumulated CPU time (s) 222.27
Current children cumulated vsize (KiB) 73268

[startup+282.301 s]
/proc/loadavg: 4.00 3.95 3.64 5/194 5332
/proc/meminfo: memFree=14610820/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=64664 CPUtime=280.81 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 14796 0 0 0 28076 5 0 0 25 0 1 0 486894660 66215936 14483 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208446 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 16166 14483 131 6 0 14636 0
Current children cumulated CPU time (s) 282.27
Current children cumulated vsize (KiB) 73364

[startup+342.301 s]
/proc/loadavg: 4.04 3.97 3.66 5/194 5334
/proc/meminfo: memFree=14581896/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=73896 CPUtime=340.81 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 17201 0 0 0 34075 6 0 0 25 0 1 0 486894660 75669504 16813 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208544 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 18474 16813 131 6 0 16944 0
Current children cumulated CPU time (s) 342.27
Current children cumulated vsize (KiB) 82596

[startup+402.301 s]
/proc/loadavg: 4.01 3.97 3.68 5/194 5336
/proc/meminfo: memFree=14562404/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=79776 CPUtime=400.82 cores=5,7

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

/proc/5324/statm: 27850 26186 131 6 0 26320 0
Current children cumulated CPU time (s) 582.28
Current children cumulated vsize (KiB) 120100

[startup+642.301 s]
/proc/loadavg: 4.08 4.00 3.75 5/194 5342
/proc/meminfo: memFree=14502940/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=117464 CPUtime=640.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 28531 0 0 0 64071 11 0 0 25 0 1 0 486894660 120283136 27716 33554432000 4194304 4218580 140736607431584 18446744073709551615 4213544 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 29366 27716 131 6 0 27836 0
Current children cumulated CPU time (s) 642.28
Current children cumulated vsize (KiB) 126164

[startup+702.301 s]
/proc/loadavg: 4.03 4.00 3.76 5/194 5344
/proc/meminfo: memFree=14501060/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=117656 CPUtime=700.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 28632 0 0 0 70071 11 0 0 25 0 1 0 486894660 120479744 27756 33554432000 4194304 4218580 140736607431584 18446744073709551615 4211905 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 29414 27756 131 6 0 27884 0
Current children cumulated CPU time (s) 702.28
Current children cumulated vsize (KiB) 126356

[startup+762.307 s]
/proc/loadavg: 4.01 4.00 3.77 5/194 5345
/proc/meminfo: memFree=14494972/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=117688 CPUtime=760.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 28724 0 0 0 76071 11 0 0 25 0 1 0 486894660 120512512 27767 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208438 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 29422 27767 131 6 0 27892 0
Current children cumulated CPU time (s) 762.28
Current children cumulated vsize (KiB) 126388

[startup+822.301 s]
/proc/loadavg: 4.00 4.00 3.79 5/194 5347
/proc/meminfo: memFree=14494080/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=117752 CPUtime=820.81 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 28815 0 0 0 82070 11 0 0 25 0 1 0 486894660 120578048 27783 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208446 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 29438 27783 131 6 0 27908 0
Current children cumulated CPU time (s) 822.27
Current children cumulated vsize (KiB) 126452

[startup+882.301 s]
/proc/loadavg: 4.00 4.00 3.80 5/194 5348
/proc/meminfo: memFree=14490964/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=117720 CPUtime=880.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 28915 0 0 0 88071 11 0 0 25 0 1 0 486894660 120545280 27779 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208542 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 29430 27779 131 6 0 27900 0
Current children cumulated CPU time (s) 882.28
Current children cumulated vsize (KiB) 126420

[startup+942.301 s]
/proc/loadavg: 4.00 4.00 3.81 5/194 5350
/proc/meminfo: memFree=14490444/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=117720 CPUtime=940.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 28993 0 0 0 94071 11 0 0 25 0 1 0 486894660 120545280 27774 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208446 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 29430 27774 131 6 0 27900 0
Current children cumulated CPU time (s) 942.28
Current children cumulated vsize (KiB) 126420

[startup+1002.3 s]
/proc/loadavg: 4.00 4.00 3.82 5/194 5352
/proc/meminfo: memFree=14487556/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=120184 CPUtime=1000.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 29677 0 0 0 100070 12 0 0 25 0 1 0 486894660 123068416 28371 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208532 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 30046 28371 131 6 0 28516 0
Current children cumulated CPU time (s) 1002.28
Current children cumulated vsize (KiB) 128884

[startup+1062.3 s]
/proc/loadavg: 4.05 4.01 3.83 5/194 5353
/proc/meminfo: memFree=14484064/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=123048 CPUtime=1060.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 30537 0 0 0 106069 13 0 0 25 0 1 0 486894660 126001152 29095 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208438 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 30762 29095 131 6 0 29232 0
Current children cumulated CPU time (s) 1062.28
Current children cumulated vsize (KiB) 131748

[startup+1122.3 s]
/proc/loadavg: 4.02 4.01 3.84 5/194 5355
/proc/meminfo: memFree=14481928/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=123088 CPUtime=1120.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 30649 0 0 0 112069 13 0 0 25 0 1 0 486894660 126042112 29121 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208446 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 30772 29121 131 6 0 29242 0
Current children cumulated CPU time (s) 1122.28
Current children cumulated vsize (KiB) 131788

[startup+1182.3 s]
/proc/loadavg: 4.00 4.00 3.84 5/194 5356
/proc/meminfo: memFree=14480544/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=123048 CPUtime=1180.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 30727 0 0 0 118069 13 0 0 25 0 1 0 486894660 126001152 29109 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208542 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 30762 29109 131 6 0 29232 0
Current children cumulated CPU time (s) 1182.28
Current children cumulated vsize (KiB) 131748

[startup+1242.3 s]
/proc/loadavg: 4.00 4.00 3.85 5/194 5358
/proc/meminfo: memFree=14470860/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=132256 CPUtime=1240.82 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 33081 0 0 0 124068 14 0 0 25 0 1 0 486894660 135430144 31376 33554432000 4194304 4218580 140736607431584 18446744073709551615 4211929 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 33064 31376 131 6 0 31534 0
Current children cumulated CPU time (s) 1242.28
Current children cumulated vsize (KiB) 140956



Maximum wall clock time exceeded: sending SIGTERM then SIGKILL

[startup+1300 s]
/proc/loadavg: 4.00 4.00 3.85 3/188 5362
/proc/meminfo: memFree=14564636/32951124 swapFree=67111528/67111528
[pid=5313] ppid=5311 vsize=8700 CPUtime=1.46 cores=5,7
/proc/5313/stat : 5313 (esg_static.sh) S 5311 5313 4448 0 -1 4202496 353 12443 0 0 0 0 142 4 18 0 1 0 486894512 8908800 252 33554432000 4194304 4922060 140735997837184 18446744073709551615 222921596037 0 65536 4100 65538 18446744071562232103 0 0 17 5 0 0 0
/proc/5313/statm: 2175 252 209 178 0 68 0
[pid=5324] ppid=5313 vsize=132256 CPUtime=1298.52 cores=5,7
/proc/5324/stat : 5324 (cdcl) R 5313 5313 4448 0 -1 4202496 33158 0 0 0 129838 14 0 0 25 0 1 0 486894660 135430144 31389 33554432000 4194304 4218580 140736607431584 18446744073709551615 4208475 0 0 4096 24578 0 0 0 17 5 0 0 0
/proc/5324/statm: 33064 31389 131 6 0 31534 0
Current children cumulated CPU time (s) 1299.98
Current children cumulated vsize (KiB) 140956

Sending SIGTERM to process tree (bottom up)
Sleeping 2 seconds

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

Child ended because it received signal 15 (SIGTERM)

# WARNING:
# CPU time reported by wait4() is probably wrong !
# wait4(...,&childrusage) returns 5313 and gives
#  childrusage.ru_utime.tv_sec=1
#  childrusage.ru_utime.tv_usec=429782
#  childrusage.ru_stime.tv_sec=0
#  childrusage.ru_stime.tv_usec=46992
# CPU time returned by wait4() is 1.47677
# while last known CPU time is 1299.98
#
# Solver probably didn't/couldn't wait for its children
# Using CPU time of the last sample as value...

Real time (s): 1300.01
CPU time (s): 1299.98
CPU user time (s): 1299.8
CPU system time (s): 0.18
CPU usage (%): 99.9976
Max. virtual memory (cumulated for all children) (KiB): 141020

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.42978
system time used= 0.046992
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 12796
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= 6
involuntary context switches= 16

runsolver used 1.90571 second user time and 5.19921 second system time

The end

Launcher Data

Begin job on node109 at 2011-04-25 19:35:38
IDJOB=3282265
IDBENCH=70797
IDSOLVER=1609
FILE ID=node109/3282265-1303752937
RUNJOBID= node109-1303752937-5277
PBS_JOBID= 13154053
Free space on /tmp= 72160 MiB

SOLVER NAME= rcl 2011-04-01
BENCH NAME= SAT09/APPLICATIONS/bitverif/maxxororand/maxxororand064.cnf
COMMAND LINE= ./esg_static.sh BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3282265-1303752937/watcher-3282265-1303752937 -o /tmp/evaluation-result-3282265-1303752937/solver-3282265-1303752937 -C 2400 -W 1300 -M 7680  ./esg_static.sh HOME/instance-3282265-1303752937.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 49dbd2fb16b3d5ce554d30c48729a56d
RANDOM SEED=2123517547

node109.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		: 2666.809
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	: 5333.61
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		: 2666.809
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	: 5332.75
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		: 2666.809
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	: 5332.74
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		: 2666.809
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	: 5332.75
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		: 2666.809
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	: 5332.82
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		: 2666.809
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	: 5332.75
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		: 2666.809
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	: 5332.82
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		: 2666.809
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      14811300 kB
Buffers:       2107736 kB
Cached:       15358860 kB
SwapCached:          0 kB
Active:        9480860 kB
Inactive:      8081884 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      14811300 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:           15732 kB
Writeback:           0 kB
AnonPages:       95104 kB
Mapped:          15660 kB
Slab:           511212 kB
PageTables:       5128 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   267412 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 72132 MiB
End job on node109 at 2011-04-25 19:57:20