Trace number 3265504

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
riss Exp? (TO) 1300.03 1300.01

General information on the benchmark

NameSAT05/crafted/roussel05/visbmc-PHNF/
phnf-size10-exclusive-philo.used-as.sat04-988.shuffled-as.sat05-4195.cnf
MD5SUM32f22e9ac89bf164b7f5db6bef950d03
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1140.77
Satisfiable
(Un)Satisfiability was proved
Number of variables36304
Number of clauses1711065
Sum of the clauses size3450220
Maximum clause length10
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21706958
Number of clauses of size 30
Number of clauses of size 45
Number of clauses of size 57
Number of clauses of size over 54095

Solver Data 

0.00/0.01	c *****************************************************
0.00/0.01	c *        riss, Copyright 2009 Norbert Manthey       *
0.00/0.01	c *   This program may be redistributed or modified   *
0.00/0.01	c * under the terms of the GNU General Public License *
0.00/0.01	c *****************************************************
0.00/0.01	c process id: 2986
0.00/0.41	c parsetime: 401095us
0.00/0.41	c parsed 1711065 clauses with 36304 variables
17.50/17.58	c start find xor
17.60/17.61	c relevant clauses: 159287
17.60/17.67	c found 0 non-binary xors encoded with 0 clauses
17.79/17.83	c init all components done
17.79/17.84	c ====================
17.79/17.84	c trail size: 3791

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-3265504-1304143030/watcher-3265504-1304143030 -o /tmp/evaluation-result-3265504-1304143030/solver-3265504-1304143030 -C 2400 -W 1300 -M 7680 HOME/rissExp.sh HOME HOME/instance-3265504-1304143030.cnf 584050360 2400 7680 2 

running on 2 cores: 4,6

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: 3.68 3.90 3.50 4/192 2985
/proc/meminfo: memFree=24606260/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0

[startup+0.040141 s]
/proc/loadavg: 3.68 3.90 3.50 4/192 2985
/proc/meminfo: memFree=24606260/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.100133 s]
/proc/loadavg: 3.68 3.90 3.50 4/192 2985
/proc/meminfo: memFree=24606260/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.300097 s]
/proc/loadavg: 3.68 3.90 3.50 4/192 2985
/proc/meminfo: memFree=24606260/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+0.701027 s]
/proc/loadavg: 3.68 3.90 3.50 4/192 2985
/proc/meminfo: memFree=24606260/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 8700

[startup+1.50089 s]
/proc/loadavg: 3.68 3.90 3.50 5/194 2987
/proc/meminfo: memFree=24495560/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=196948 CPUtime=1.49 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 46581 0 0 0 143 6 0 0 25 0 1 0 604533884 201674752 44575 33554432000 4194304 5525396 140736324584144 18446744073709551615 215988253729 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 49237 44575 326 325 0 45051 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 205648

[startup+3.10066 s]
/proc/loadavg: 3.70 3.90 3.50 5/194 2987
/proc/meminfo: memFree=24415084/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=281176 CPUtime=3.09 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 67638 0 0 0 300 9 0 0 25 0 1 0 604533884 287924224 65632 33554432000 4194304 5525396 140736324584144 18446744073709551615 47074789131415 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 70294 65632 326 325 0 66108 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 289876

[startup+6.30111 s]
/proc/loadavg: 3.70 3.90 3.50 5/194 2987
/proc/meminfo: memFree=24504688/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=144672 CPUtime=6.29 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 77165 0 0 0 618 11 0 0 25 0 1 0 604533884 148144128 31139 33554432000 4194304 5525396 140736324584144 18446744073709551615 4339823 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 36168 31139 332 325 0 31982 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 153372

[startup+12.701 s]
/proc/loadavg: 3.75 3.90 3.50 5/194 2987
/proc/meminfo: memFree=24422656/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=196776 CPUtime=12.69 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 89831 0 0 0 1257 12 0 0 25 0 1 0 604533884 201498624 43805 33554432000 4194304 5525396 140736324584144 18446744073709551615 4374960 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 49194 43805 336 325 0 45008 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 205476

[startup+25.5007 s]
/proc/loadavg: 3.79 3.91 3.51 5/194 3016
/proc/meminfo: memFree=24388932/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=221524 CPUtime=25.5 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 123888 0 0 0 2532 18 0 0 25 0 1 0 604533884 226840576 49942 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308761 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 55381 49942 372 325 0 51195 0
Current children cumulated CPU time (s) 25.5
Current children cumulated vsize (KiB) 230224

[startup+51.1003 s]
/proc/loadavg: 3.93 3.93 3.53 5/194 3017
/proc/meminfo: memFree=24356716/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=225088 CPUtime=51.09 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 124772 0 0 0 5091 18 0 0 25 0 1 0 604533884 230490112 50826 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308681 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 56272 50826 372 325 0 52086 0
Current children cumulated CPU time (s) 51.09
Current children cumulated vsize (KiB) 233788

[startup+102.307 s]
/proc/loadavg: 3.97 3.94 3.55 5/194 3018
/proc/meminfo: memFree=24305188/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=232284 CPUtime=102.29 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 126531 0 0 0 10211 18 0 0 25 0 1 0 604533884 237858816 52585 33554432000 4194304 5525396 140736324584144 18446744073709551615 5307930 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 58071 52585 372 325 0 53885 0
Current children cumulated CPU time (s) 102.29
Current children cumulated vsize (KiB) 240984

[startup+162.301 s]
/proc/loadavg: 3.99 3.95 3.57 5/194 3020
/proc/meminfo: memFree=24261516/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=238988 CPUtime=162.29 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 128206 0 0 0 16210 19 0 0 25 0 1 0 604533884 244723712 54260 33554432000 4194304 5525396 140736324584144 18446744073709551615 5298759 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 59747 54260 372 325 0 55561 0
Current children cumulated CPU time (s) 162.29
Current children cumulated vsize (KiB) 247688

[startup+222.3 s]
/proc/loadavg: 3.99 3.95 3.60 5/194 3021
/proc/meminfo: memFree=24203816/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=250008 CPUtime=222.29 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 130914 0 0 0 22208 21 0 0 25 0 1 0 604533884 256008192 56968 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308568 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 62502 56968 372 325 0 58316 0
Current children cumulated CPU time (s) 222.29
Current children cumulated vsize (KiB) 258708

[startup+282.301 s]
/proc/loadavg: 3.99 3.96 3.62 5/194 3032
/proc/meminfo: memFree=24179272/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=258876 CPUtime=282.3 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 133102 0 0 0 28208 22 0 0 25 0 1 0 604533884 265089024 59156 33554432000 4194304 5525396 140736324584144 18446744073709551615 5309108 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 64719 59156 372 325 0 60533 0
Current children cumulated CPU time (s) 282.3
Current children cumulated vsize (KiB) 267576

[startup+342.3 s]
/proc/loadavg: 4.11 3.99 3.65 5/194 3034
/proc/meminfo: memFree=24143028/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=260540 CPUtime=342.3 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 133504 0 0 0 34208 22 0 0 25 0 1 0 604533884 266792960 59558 33554432000 4194304 5525396 140736324584144 18446744073709551615 5309140 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 65135 59558 372 325 0 60949 0
Current children cumulated CPU time (s) 342.3
Current children cumulated vsize (KiB) 269240

[startup+402.301 s]
/proc/loadavg: 4.04 3.99 3.67 5/194 3035
/proc/meminfo: memFree=24095748/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6

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

/proc/2986/statm: 68752 62421 372 325 0 64566 0
Current children cumulated CPU time (s) 582.3
Current children cumulated vsize (KiB) 283708

[startup+642.301 s]
/proc/loadavg: 4.04 4.01 3.74 5/194 3042
/proc/meminfo: memFree=23983236/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=282924 CPUtime=642.31 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 138201 0 0 0 64207 24 0 0 25 0 1 0 604533884 289714176 64255 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308681 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 70731 64255 372 325 0 66545 0
Current children cumulated CPU time (s) 642.31
Current children cumulated vsize (KiB) 291624

[startup+702.3 s]
/proc/loadavg: 4.01 4.00 3.75 5/194 3043
/proc/meminfo: memFree=23934972/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=282924 CPUtime=702.31 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 138215 0 0 0 70207 24 0 0 25 0 1 0 604533884 289714176 64269 33554432000 4194304 5525396 140736324584144 18446744073709551615 5309140 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 70731 64269 372 325 0 66545 0
Current children cumulated CPU time (s) 702.31
Current children cumulated vsize (KiB) 291624

[startup+762.307 s]
/proc/loadavg: 4.00 4.00 3.77 5/194 3045
/proc/meminfo: memFree=23923892/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=284364 CPUtime=762.32 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 138543 0 0 0 76208 24 0 0 25 0 1 0 604533884 291188736 64597 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308034 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 71091 64597 372 325 0 66905 0
Current children cumulated CPU time (s) 762.32
Current children cumulated vsize (KiB) 293064

[startup+822.3 s]
/proc/loadavg: 4.00 4.00 3.78 5/194 3046
/proc/meminfo: memFree=23914556/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=290796 CPUtime=822.31 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 139990 0 0 0 82207 24 0 0 25 0 1 0 604533884 297775104 66044 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308936 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 72699 66044 372 325 0 68513 0
Current children cumulated CPU time (s) 822.31
Current children cumulated vsize (KiB) 299496

[startup+882.301 s]
/proc/loadavg: 4.05 4.01 3.79 5/194 3048
/proc/meminfo: memFree=23897756/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=302212 CPUtime=882.31 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 142306 0 0 0 88205 26 0 0 25 0 1 0 604533884 309465088 68360 33554432000 4194304 5525396 140736324584144 18446744073709551615 215988290154 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 75553 68360 372 325 0 71367 0
Current children cumulated CPU time (s) 882.31
Current children cumulated vsize (KiB) 310912

[startup+942.3 s]
/proc/loadavg: 4.02 4.01 3.80 5/194 3050
/proc/meminfo: memFree=23820592/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=302212 CPUtime=942.32 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 142318 0 0 0 94206 26 0 0 25 0 1 0 604533884 309465088 68372 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308706 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 75553 68372 372 325 0 71367 0
Current children cumulated CPU time (s) 942.32
Current children cumulated vsize (KiB) 310912

[startup+1002.3 s]
/proc/loadavg: 4.00 4.00 3.82 5/194 3051
/proc/meminfo: memFree=23758908/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=307076 CPUtime=1002.32 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 143475 0 0 0 100206 26 0 0 25 0 1 0 604533884 314445824 69529 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308780 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 76769 69529 372 325 0 72583 0
Current children cumulated CPU time (s) 1002.32
Current children cumulated vsize (KiB) 315776

[startup+1062.3 s]
/proc/loadavg: 4.00 4.00 3.82 5/194 3053
/proc/meminfo: memFree=23737292/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=309852 CPUtime=1062.31 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 144359 0 0 0 106205 26 0 0 25 0 1 0 604533884 317288448 70413 33554432000 4194304 5525396 140736324584144 18446744073709551615 5302969 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 77463 70413 372 325 0 73277 0
Current children cumulated CPU time (s) 1062.31
Current children cumulated vsize (KiB) 318552

[startup+1122.3 s]
/proc/loadavg: 4.00 4.00 3.83 5/194 3054
/proc/meminfo: memFree=23717528/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=329684 CPUtime=1122.32 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 148610 0 0 0 112204 28 0 0 25 0 1 0 604533884 337596416 74664 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308568 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 82421 74664 372 325 0 78235 0
Current children cumulated CPU time (s) 1122.32
Current children cumulated vsize (KiB) 338384

[startup+1182.3 s]
/proc/loadavg: 4.06 4.02 3.84 5/194 3056
/proc/meminfo: memFree=23697528/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=344768 CPUtime=1182.31 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 152174 0 0 0 118202 29 0 0 25 0 1 0 604533884 353042432 78228 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308074 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 86192 78228 372 325 0 82006 0
Current children cumulated CPU time (s) 1182.31
Current children cumulated vsize (KiB) 353468

[startup+1242.3 s]
/proc/loadavg: 4.07 4.03 3.85 5/194 3058
/proc/meminfo: memFree=23673912/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=360768 CPUtime=1242.32 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 156187 0 0 0 124201 31 0 0 25 0 1 0 604533884 369426432 82241 33554432000 4194304 5525396 140736324584144 18446744073709551615 5308954 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 90192 82241 372 325 0 86006 0
Current children cumulated CPU time (s) 1242.32
Current children cumulated vsize (KiB) 369468



Maximum wall clock time exceeded: sending SIGTERM then SIGKILL

[startup+1300 s]
/proc/loadavg: 4.03 4.02 3.86 3/188 3061
/proc/meminfo: memFree=24244688/32950940 swapFree=67111364/67111528
[pid=2985] ppid=2983 vsize=8700 CPUtime=0 cores=4,6
/proc/2985/stat : 2985 (rissExp.sh) S 2983 2985 1312 0 -1 4202496 333 0 0 0 0 0 0 0 23 0 1 0 604533884 8908800 252 33554432000 4194304 4922060 140734616835232 18446744073709551615 215988411525 0 65536 4100 65538 18446744071562232103 0 0 17 4 0 0 0
/proc/2985/statm: 2175 252 211 178 0 68 0
[pid=2986] ppid=2985 vsize=374292 CPUtime=1300.03 cores=4,6
/proc/2986/stat : 2986 (rissExp) R 2985 2985 1312 0 -1 4202496 159576 0 0 0 129970 33 0 0 25 0 1 0 604533884 383275008 85630 33554432000 4194304 5525396 140736324584144 18446744073709551615 4219916 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2986/statm: 93573 85630 372 325 0 89387 0
Current children cumulated CPU time (s) 1300.03
Current children cumulated vsize (KiB) 382992

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 2985 and gives
#  childrusage.ru_utime.tv_sec=0
#  childrusage.ru_utime.tv_usec=0
#  childrusage.ru_stime.tv_sec=0
#  childrusage.ru_stime.tv_usec=0
# CPU time returned by wait4() is 0
# while last known CPU time is 1300.03
#
# 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): 1300.03
CPU user time (s): 1299.7
CPU system time (s): 0.33
CPU usage (%): 100.001
Max. virtual memory (cumulated for all children) (KiB): 382992

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 333
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= 4
involuntary context switches= 1

runsolver used 1.9707 second user time and 5.13422 second system time

The end

Launcher Data 

Begin job on node117 at 2011-04-30 07:57:11
IDJOB=3265504
IDBENCH=85764
IDSOLVER=1599
FILE ID=node117/3265504-1304143030
RUNJOBID= node117-1304141727-2735
PBS_JOBID= 13170811
Free space on /tmp= 72592 MiB

SOLVER NAME= riss Exp
BENCH NAME= SAT05/crafted/roussel05/visbmc-PHNF/phnf-size10-exclusive-philo.used-as.sat04-988.shuffled-as.sat05-4195.cnf
COMMAND LINE= DIR/rissExp.sh DIR BENCHNAME RANDOMSEED TIMELIMIT MEMLIMIT NBCORE
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3265504-1304143030/watcher-3265504-1304143030 -o /tmp/evaluation-result-3265504-1304143030/solver-3265504-1304143030 -C 2400 -W 1300 -M 7680  HOME/rissExp.sh HOME HOME/instance-3265504-1304143030.cnf 584050360 2400 7680 2

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

MD5SUM BENCH= 32f22e9ac89bf164b7f5db6bef950d03
RANDOM SEED=584050360

node117.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		: 2666.849
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	: 5333.69
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		: 2666.849
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		: 2666.849
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		: 2666.849
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		: 2666.849
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	: 5332.75
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		: 2666.849
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	: 5332.74
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		: 2666.849
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		: 2666.849
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	: 5267.44
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950940 kB
MemFree:      24606540 kB
Buffers:       1888760 kB
Cached:        5646628 kB
SwapCached:        160 kB
Active:        1087144 kB
Inactive:      6692596 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950940 kB
LowFree:      24606540 kB
SwapTotal:    67111528 kB
SwapFree:     67111364 kB
Dirty:           41964 kB
Writeback:           0 kB
AnonPages:      243964 kB
Mapped:          16124 kB
Slab:           501104 kB
PageTables:       5604 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586996 kB
Committed_AS:   433084 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= 72604 MiB
End job on node117 at 2011-04-30 08:18:53