Trace number 3706394

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 NameAnswerobjective functionCPU timeWall clock time
toysat 2012-05-17? (TO) 1800.03 1800.31

General information on the benchmark

Name/OPT-BIGINT-LIN/sroussel/BA/
normalized-BA_RDC4.dot_fibo_50null20mast_rapportOE1.0_TMAX15_K67_cod2.opb
MD5SUMf9eaad32e84d87a32d0b5541c1d107cf
Bench CategoryOPT-BIGINT-LIN (optimisation, big integers, linear constraints)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark-12022
Best CPU time to get the best result obtained on this benchmark607.882
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of variables40937
Total number of constraints41436
Number of constraints which are clauses40882
Number of constraints which are cardinality constraints (but not clauses)67
Number of constraints which are nor clauses,nor cardinality constraints487
Minimum length of a constraint1
Maximum length of a constraint8416
Number of terms in the objective function 243
Biggest coefficient in the objective function 10946
Number of bits for the biggest coefficient in the objective function 14
Sum of the numbers in the objective function 1177014
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 10946
Number of bits of the biggest number in a constraint 14
Biggest sum of numbers in a constraint 1177014
Number of bits of the biggest sum of numbers21
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data 

1.48/1.51	c 2012-05-28T16:54:50+0200
1.48/1.51	c arch = x86_64
1.48/1.51	c os = linux
1.48/1.51	c compiler = ghc 7.4
1.48/1.51	c packages:
1.48/1.51	c   OptDir-0.0.1
1.48/1.51	c   array-0.4.0.0
1.48/1.51	c   base-4.5.0.0
1.48/1.51	c   bytestring-0.9.2.1
1.48/1.51	c   containers-0.4.2.1
1.48/1.51	c   deepseq-1.3.0.0
1.48/1.51	c   mtl-2.1.1
1.48/1.51	c   old_locale-1.0.0.4
1.48/1.51	c   parse_dimacs-1.2
1.48/1.51	c   parsec-3.1.2
1.48/1.51	c   queue-0.1.2
1.48/1.51	c   stm-2.3
1.48/1.51	c   time-1.4
1.48/1.51	c command line = ["--pb","HOME/instance-3706394-1338216890.opb"]
1.48/1.51	c #vars 40937
1.48/1.51	c #constraints 41436
1.48/1.51	c Solving starts ...
947.14/947.31	c solving time = 945.614s
947.14/947.31	c #decision = 136284
947.14/947.31	c #conflict = 13814
947.14/947.31	c #restart = 10
947.14/947.31	o 0
947.14/947.31	c Solving starts ...
947.24/947.45	c solving time = 0.105s
947.24/947.45	c #decision = 136345
947.24/947.45	c #conflict = 13814
947.24/947.45	c #restart = 10
947.24/947.45	o -34
947.24/947.45	c Solving starts ...
947.34/947.59	c solving time = 0.107s
947.34/947.59	c #decision = 136405
947.34/947.59	c #conflict = 13814
947.34/947.59	c #restart = 10
947.34/947.59	o -89
947.34/947.59	c Solving starts ...
1711.92/1712.29	c solving time = 764.550s
1711.92/1712.29	c #decision = 144130
1711.92/1712.29	c #conflict = 14423
1711.92/1712.29	c #restart = 13
1711.92/1712.29	o -144
1711.92/1712.29	c Solving starts ...
1713.92/1714.20	c solving time = 1.877s
1713.92/1714.20	c #decision = 144142
1713.92/1714.20	c #conflict = 14424
1713.92/1714.20	c #restart = 13
1713.92/1714.20	o -2584
1713.92/1714.20	c Solving starts ...

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.1 (svn: 989)

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-3706394-1338216890/watcher-3706394-1338216890 -o /tmp/evaluation-result-3706394-1338216890/solver-3706394-1338216890 -C 1800 -W 1900 -M 15500 HOME/toysat --pb HOME/instance-3706394-1338216890.opb 

running on 4 cores: 1,3,5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1900 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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.99 1.99 1.99 3/176 29369
/proc/meminfo: memFree=26954620/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=7232 CPUtime=0 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 822 0 0 0 0 0 0 0 20 0 1 0 287817547 7405568 744 33554432000 4194304 8973514 140735514498768 140734538089944 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 1808 744 415 1167 0 589 0

[startup+0.0393469 s]
/proc/loadavg: 1.99 1.99 1.99 3/176 29369
/proc/meminfo: memFree=26954620/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=9280 CPUtime=0.03 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 1404 0 0 0 3 0 0 0 20 0 1 0 287817547 9502720 1326 33554432000 4194304 8973514 140735514498768 140734538089944 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 2320 1326 418 1167 0 1101 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 9280

[startup+0.100283 s]
/proc/loadavg: 1.99 1.99 1.99 3/176 29369
/proc/meminfo: memFree=26954620/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=13376 CPUtime=0.09 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 2399 0 0 0 9 0 0 0 20 0 1 0 287817547 13697024 2321 33554432000 4194304 8973514 140735514498768 140734538089944 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 3344 2321 418 1167 0 2125 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 13376

[startup+0.300318 s]
/proc/loadavg: 1.99 1.99 1.99 3/176 29369
/proc/meminfo: memFree=26954620/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=22592 CPUtime=0.29 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 4915 0 0 0 28 1 0 0 20 0 1 0 287817547 23134208 4837 33554432000 4194304 8973514 140735514498768 140735514498264 4208833 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 5648 4837 418 1167 0 4429 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 22592

[startup+0.700314 s]
/proc/loadavg: 1.99 1.99 1.99 3/176 29369
/proc/meminfo: memFree=26954620/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=44096 CPUtime=0.69 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 10291 0 0 0 66 3 0 0 20 0 1 0 287817547 45154304 10213 33554432000 4194304 8973514 140735514498768 140735514498264 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 11024 10213 418 1167 0 9805 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 44096

[startup+1.50032 s]
/proc/loadavg: 1.99 1.99 1.99 3/177 29370
/proc/meminfo: memFree=26885932/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=92224 CPUtime=1.48 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 22339 0 0 0 143 5 0 0 20 0 1 0 287817547 94437376 22261 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 23056 22261 428 1167 0 21837 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 92224

[startup+3.10033 s]
/proc/loadavg: 1.99 1.99 1.99 3/177 29370
/proc/meminfo: memFree=26858380/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=3.09 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24663 0 0 0 303 6 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 101440

[startup+6.30033 s]
/proc/loadavg: 1.99 1.99 1.99 3/177 29370
/proc/meminfo: memFree=26856892/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=6.29 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24663 0 0 0 622 7 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514498264 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 101440

[startup+12.7003 s]
/proc/loadavg: 1.99 1.99 1.99 3/177 29370
/proc/meminfo: memFree=26856908/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=12.69 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24663 0 0 0 1260 9 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514498264 4209212 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 101440

[startup+25.5003 s]
/proc/loadavg: 2.07 2.01 2.00 3/177 29370
/proc/meminfo: memFree=26856040/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=25.48 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24663 0 0 0 2537 11 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514496768 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 101440

[startup+51.1003 s]
/proc/loadavg: 2.04 2.01 2.00 3/177 29370
/proc/meminfo: memFree=26854296/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=51.07 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24670 0 0 0 5091 16 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514498264 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 51.07
Current children cumulated vsize (KiB) 101440

[startup+102.307 s]
/proc/loadavg: 2.02 2.00 2.00 3/177 29370
/proc/meminfo: memFree=26849740/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=102.28 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24677 0 0 0 10203 25 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514480768 7667518 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 102.28
Current children cumulated vsize (KiB) 101440

[startup+162.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29370
/proc/meminfo: memFree=26844656/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=101440 CPUtime=162.27 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 24677 0 0 0 16190 37 0 0 20 0 1 0 287817547 103874560 24585 33554432000 4194304 8973514 140735514498768 140735514498032 4208823 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 25360 24585 447 1167 0 24141 0
Current children cumulated CPU time (s) 162.27
Current children cumulated vsize (KiB) 101440

[startup+222.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29370
/proc/meminfo: memFree=26839684/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=105536 CPUtime=222.25 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 25701 0 0 0 22176 49 0 0 20 0 1 0 287817547 108068864 25609 33554432000 4194304 8973514 140735514498768 140735514498264 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 26384 25609 447 1167 0 25165 0
Current children cumulated CPU time (s) 222.25
Current children cumulated vsize (KiB) 105536

[startup+282.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29371
/proc/meminfo: memFree=26839928/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=105536 CPUtime=282.25 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 25701 0 0 0 28162 63 0 0 20 0 1 0 287817547 108068864 25609 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 26384 25609 447 1167 0 25165 0
Current children cumulated CPU time (s) 282.25
Current children cumulated vsize (KiB) 105536

[startup+342.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/178 29374
/proc/meminfo: memFree=26840292/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=105536 CPUtime=342.23 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 25701 0 0 0 34146 77 0 0 20 0 1 0 287817547 108068864 25609 33554432000 4194304 8973514 140735514498768 140735514480768 4209212 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 26384 25609 447 1167 0 25165 0
Current children cumulated CPU time (s) 342.23
Current children cumulated vsize (KiB) 105536

[startup+402.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/178 29397
/proc/meminfo: memFree=26838616/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=106560 CPUtime=402.22 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 25957 0 0 0 40133 89 0 0 20 0 1 0 287817547 109117440 25865 33554432000 4194304 8973514 140735514498768 140735514496704 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 26640 25865 447 1167 0 25421 0
Current children cumulated CPU time (s) 402.22
Current children cumulated vsize (KiB) 106560

[startup+462.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29397
/proc/meminfo: memFree=26838500/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=106560 CPUtime=462.21 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 25957 0 0 0 46122 99 0 0 20 0 1 0 287817547 109117440 25865 33554432000 4194304 8973514 140735514498768 140735514498264 4209286 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 26640 25865 447 1167 0 25421 0
Current children cumulated CPU time (s) 462.21
Current children cumulated vsize (KiB) 106560

[startup+522.3 s]
/proc/loadavg: 2.06 2.02 2.00 3/177 29397
/proc/meminfo: memFree=26836640/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=107584 CPUtime=522.2 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 26213 0 0 0 52109 111 0 0 20 0 1 0 287817547 110166016 26121 33554432000 4194304 8973514 140735514498768 140735514496704 6571912 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 26896 26121 447 1167 0 25677 0
Current children cumulated CPU time (s) 522.2
Current children cumulated vsize (KiB) 107584

[startup+582.3 s]
/proc/loadavg: 2.02 2.01 2.00 3/177 29398
/proc/meminfo: memFree=26835524/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=108608 CPUtime=582.2 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 26469 0 0 0 58099 121 0 0 20 0 1 0 287817547 111214592 26377 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 27152 26377 447 1167 0 25933 0
Current children cumulated CPU time (s) 582.2
Current children cumulated vsize (KiB) 108608

[startup+642.3 s]

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

[startup+882.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29399
/proc/meminfo: memFree=26821996/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=117824 CPUtime=882.15 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 28775 0 0 0 88035 180 0 0 20 0 1 0 287817547 120651776 28681 33554432000 4194304 8973514 140735514498768 140735514498264 4213683 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 29456 28681 447 1167 0 28237 0
Current children cumulated CPU time (s) 882.15
Current children cumulated vsize (KiB) 117824

[startup+942.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/178 29402
/proc/meminfo: memFree=26821988/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=117824 CPUtime=942.14 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 28775 0 0 0 94025 189 0 0 20 0 1 0 287817547 120651776 28681 33554432000 4194304 8973514 140735514498768 140735514498032 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 29456 28681 447 1167 0 28237 0
Current children cumulated CPU time (s) 942.14
Current children cumulated vsize (KiB) 117824

[startup+1002.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29402
/proc/meminfo: memFree=26817964/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1002.13 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 100010 203 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514496704 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1002.13
Current children cumulated vsize (KiB) 121920

[startup+1062.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29402
/proc/meminfo: memFree=26817772/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1062.13 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 105995 218 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514496768 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1062.13
Current children cumulated vsize (KiB) 121920

[startup+1122.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29402
/proc/meminfo: memFree=26814796/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1122.11 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 111980 231 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498264 4204292 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1122.11
Current children cumulated vsize (KiB) 121920

[startup+1182.3 s]
/proc/loadavg: 2.00 2.00 2.00 3/177 29403
/proc/meminfo: memFree=26814732/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1182.1 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 117965 245 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498264 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1182.1
Current children cumulated vsize (KiB) 121920

[startup+1242.3 s]
/proc/loadavg: 2.06 2.02 2.00 4/177 29442
/proc/meminfo: memFree=26880960/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1242.09 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 123949 260 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498264 4209520 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1242.09
Current children cumulated vsize (KiB) 121920

[startup+1302.3 s]
/proc/loadavg: 2.02 2.01 2.00 4/177 29442
/proc/meminfo: memFree=26873200/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1302.09 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 129933 276 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1302.09
Current children cumulated vsize (KiB) 121920

[startup+1362.3 s]
/proc/loadavg: 2.01 2.00 2.00 4/177 29442
/proc/meminfo: memFree=26870472/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1362.08 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 135919 289 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498032 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1362.08
Current children cumulated vsize (KiB) 121920

[startup+1422.31 s]
/proc/loadavg: 2.00 2.00 2.00 4/177 29442
/proc/meminfo: memFree=26870844/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1422.07 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 141906 301 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498032 4204359 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1422.07
Current children cumulated vsize (KiB) 121920

[startup+1482.3 s]
/proc/loadavg: 2.00 2.00 2.00 4/177 29443
/proc/meminfo: memFree=26870772/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1482.06 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 147891 315 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498032 4208823 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1482.06
Current children cumulated vsize (KiB) 121920

[startup+1542.3 s]
/proc/loadavg: 2.00 2.00 2.00 4/178 29446
/proc/meminfo: memFree=26863696/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1542.05 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 153878 327 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514498264 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1542.05
Current children cumulated vsize (KiB) 121920

[startup+1602.3 s]
/proc/loadavg: 2.00 2.00 2.00 4/177 29446
/proc/meminfo: memFree=26854652/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=121920 CPUtime=1602.04 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 29809 0 0 0 159863 341 0 0 20 0 1 0 287817547 124846080 29715 33554432000 4194304 8973514 140735514498768 140735514496704 7937344 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30480 29715 457 1167 0 29261 0
Current children cumulated CPU time (s) 1602.04
Current children cumulated vsize (KiB) 121920

[startup+1662.3 s]
/proc/loadavg: 2.00 2.00 2.00 4/177 29446
/proc/meminfo: memFree=26850668/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=122944 CPUtime=1662.03 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 30065 0 0 0 165850 353 0 0 20 0 1 0 287817547 125894656 29971 33554432000 4194304 8973514 140735514498768 140735514496704 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30736 29971 457 1167 0 29517 0
Current children cumulated CPU time (s) 1662.03
Current children cumulated vsize (KiB) 122944

[startup+1722.3 s]
/proc/loadavg: 2.07 2.02 2.00 4/176 29446
/proc/meminfo: memFree=26835920/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=122944 CPUtime=1722.02 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 30065 0 0 0 171835 367 0 0 20 0 1 0 287817547 125894656 29971 33554432000 4194304 8973514 140735514498768 140735514498264 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30736 29971 457 1167 0 29517 0
Current children cumulated CPU time (s) 1722.02
Current children cumulated vsize (KiB) 122944

[startup+1782.3 s]
/proc/loadavg: 2.02 2.01 2.00 4/177 29448
/proc/meminfo: memFree=26834176/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=122944 CPUtime=1782.01 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 30065 0 0 0 177821 380 0 0 20 0 1 0 287817547 125894656 29971 33554432000 4194304 8973514 140735514498768 140735514496704 4427820 0 0 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30736 29971 457 1167 0 29517 0
Current children cumulated CPU time (s) 1782.01
Current children cumulated vsize (KiB) 122944



Maximum CPU time exceeded: sending SIGTERM then SIGKILL

[startup+1800.3 s]
/proc/loadavg: 2.02 2.01 2.00 3/177 29448
/proc/meminfo: memFree=26834296/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=122944 CPUtime=1800.02 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 30065 0 0 0 179619 383 0 0 20 0 1 0 287817547 125894656 29971 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30736 29971 457 1167 0 29517 0
Current children cumulated CPU time (s) 1800.02
Current children cumulated vsize (KiB) 122944

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

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

[startup+1800.3 s]
/proc/loadavg: 2.02 2.01 2.00 3/177 29448
/proc/meminfo: memFree=26834296/32873844 swapFree=6088/6088
[pid=29369] ppid=29367 vsize=122944 CPUtime=1800.02 cores=1,3,5,7
/proc/29369/stat : 29369 (toysat) R 29367 29369 27853 0 -1 4202496 30065 0 0 0 179619 383 0 0 20 0 1 0 287817547 125894656 29971 33554432000 4194304 8973514 140735514498768 140735514498032 7841851 0 2 0 34082818 0 0 0 17 5 0 0 0 0 0
/proc/29369/statm: 30736 29971 457 1167 0 29517 0
Current children cumulated CPU time (s) 1800.02
Current children cumulated vsize (KiB) 122944

Child ended because it received signal 15 (SIGTERM)
Real time (s): 1800.31
CPU time (s): 1800.03
CPU user time (s): 1796.19
CPU system time (s): 3.83742
CPU usage (%): 99.9845
Max. virtual memory (cumulated for all children) (KiB): 122944

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1796.19
system time used= 3.83742
maximum resident set size= 119884
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 30065
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= 19
involuntary context switches= 1853

runsolver used 3.61245 second user time and 10.3434 second system time

The end

Launcher Data 

Begin job on node108 at 2012-05-28 16:54:50
IDJOB=3706394
IDBENCH=91831
IDSOLVER=2285
FILE ID=node108/3706394-1338216890
RUNJOBID= node108-1338192848-27870
PBS_JOBID= 14624581
Free space on /tmp= 71716 MiB

SOLVER NAME= toysat 2012-05-17
BENCH NAME= PB12/normalized-PB12/OPT-BIGINT-LIN/sroussel/BA/normalized-BA_RDC4.dot_fibo_50null20mast_rapportOE1.0_TMAX15_K67_cod2.opb
COMMAND LINE= HOME/toysat --pb BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3706394-1338216890/watcher-3706394-1338216890 -o /tmp/evaluation-result-3706394-1338216890/solver-3706394-1338216890 -C 1800 -W 1900 -M 15500  HOME/toysat --pb HOME/instance-3706394-1338216890.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= f9eaad32e84d87a32d0b5541c1d107cf
RANDOM SEED=1575878587

node108.alineos.net Linux 2.6.32-71.29.1.el6.x86_64 #1 SMP Mon Jun 27 19:49:27 BST 2011

/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		: 2666.273
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.54
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
initial apicid	: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5331.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5331.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
initial apicid	: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5331.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
initial apicid	: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5331.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
initial apicid	: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5438.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
initial apicid	: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5331.90
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.273
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
initial apicid	: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5331.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:       32873844 kB
MemFree:        26954892 kB
Buffers:          329960 kB
Cached:          4618536 kB
SwapCached:            0 kB
Active:           843448 kB
Inactive:        4279608 kB
Active(anon):     173996 kB
Inactive(anon):        0 kB
Active(file):     669452 kB
Inactive(file):  4279608 kB
Unevictable:        6088 kB
Mlocked:            6088 kB
SwapTotal:      67108856 kB
SwapFree:       67108856 kB
Dirty:              9716 kB
Writeback:             0 kB
AnonPages:        177336 kB
Mapped:            16136 kB
Shmem:               200 kB
Slab:             656908 kB
SReclaimable:      99196 kB
SUnreclaim:       557712 kB
KernelStack:        1456 kB
PageTables:         4348 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83545776 kB
Committed_AS:     282600 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      346368 kB
VmallocChunk:   34341987984 kB
HardwareCorrupted:     0 kB
AnonHugePages:    149504 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        7872 kB
DirectMap2M:    33538048 kB

Free space on /tmp at the end= 71708 MiB
End job on node108 at 2012-05-28 17:24:52