0.01/0.08
0.01/0.08 Abscon 112 (May, 2008)
0.19/0.24
0.19/0.24 configuration
0.19/0.24 name=esac.xml
0.19/0.27
0.19/0.27 instance
0.19/0.27 name=HOME/instance-1045011-1215024773.xml
0.29/0.30
0.29/0.30 domains being loaded...
0.29/0.31
0.29/0.31 variables being loaded...
0.29/0.34 nbVariables=36 nbDomainTypes=1 minDomainSize=36 maxDomainSize=36 nbTotalValues=1296
0.29/0.34 => wckTime=0.103 cpuTime=0.09 mem=7M919
0.29/0.34
0.29/0.34 constraints being loaded...
0.39/0.44 nbConstraints=34 nbGlobalConstraints=34 nbSharedBinaryRepresentations=0 minDegree=9 maxDegree=11 minArity=6
0.39/0.44 avgArity=10.18 maxArity=36 nbGenerators=5 nbFusions=0 symmetryWckTime=0.058 symmetryCpuTime=0.03
0.39/0.44 => wckTime=0.199 cpuTime=0.15 mem=10M869
0.39/0.49
0.39/0.49 solver IterativeSystematicSolver being built...
0.48/0.57
0.48/0.57 INFO : Forward propagation technique limited
0.58/0.65 => wckTime=0.412 cpuTime=0.28 mem=19M604
0.68/0.71
0.68/0.71 preprocessing
0.68/0.71 nbConstraintChecks=0 nbPropagations=1343 nbRevisions=0 nbUselessRevisions=0 nbSingletonTests=49
0.68/0.71 nbEffectiveSingletonTests=0 nbACRemovals=0 nbFoundSingletons=0 nbRemovedValues=0 detectedInconsistency=no
0.68/0.71 => wckTime=0.055 cpuTime=0.03 mem=19M604
0.77/0.83
0.77/0.83 INFO : Stopping use of transposition table (mapSize=101, nbTooLargekeys=0, mem=20M595)
1.67/1.78
1.67/1.78 search
1.67/1.78 run=15 nbConstraintChecks=39143 minDepth=4 maxDepth=36 nbPropagations=528137 nbRevisions=0
1.67/1.78 nbUselessRevisions=0 nbAssignments=14132 nbFailedAssignments=8761 nbBacktracks=5066 nbVisitedNodes=27182
1.67/1.78 nbRestartNogoods=374 nbFoundSolutions=1 nbSEliminables=0 nbREliminables=0 nbIEliminables=23.8 nbDEliminables=0
1.67/1.78 nbPEliminables=0
1.67/1.78 => wckTime=1.13 cpuTime=1.03 mem=20M595
1.67/1.79
1.67/1.79 global
1.67/1.79 nbConstraintChecks=39143 nbPropagations=529480 nbRestartNogoods=374 solvingWckTime=1.133 solvingCpuTime=1.03
1.67/1.79 expiredTime=no totalExploration=no nbFoundSolutions=1 firstSolutionCpuTime=1.31 globalCpuTime=1.34
1.67/1.79 => wckTime=1.547 cpuTime=1.31 mem=20M595
1.67/1.79
1.67/1.79 s SATISFIABLE
1.67/1.79 v 1 13 22 30 19 26 14 35 9 15 21 17 12 16 36 28 11 8 32 31 3 4 7 34 25 6 18 5 33 24 27 10 23 29 20 2
1.67/1.79 d NODES 14132
1.67/1.79 d CHECKS 39143
1.67/1.79
1.67/1.79 totalWckTime=1.613 totalCpuTime=1.35
runsolver version 3.2.5 (c) roussel@cril.univ-artois.fr
command line: /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1045011-1215024773/watcher-1045011-1215024773 -o /tmp/evaluation-result-1045011-1215024773/solver-1045011-1215024773 -C 1800 -W 2200 -M 900 --output-limit 1,15 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax HOME/instance-1045011-1215024773.xml
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): 2200 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB
[startup+0 s]
/proc/loadavg: 1.92 1.98 1.96 3/72 16064
/proc/meminfo: memFree=1806720/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=152 CPUtime=0
/proc/16064/stat : 16064 (java) R 16062 16064 15383 0 -1 0 205 0 0 0 0 0 0 0 18 0 1 0 1981451669 155648 26 996147200 134512640 134550740 4294955968 18446744073709551615 7483691 0 0 4096 0 0 0 0 17 0 0 0
/proc/16064/statm: 38 26 19 9 0 4 0
[startup+0.022363 s]
/proc/loadavg: 1.92 1.98 1.96 3/72 16064
/proc/meminfo: memFree=1806720/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=861228 CPUtime=0.01
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 1725 0 1 0 0 1 0 0 18 0 3 0 1981451669 881897472 1421 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16784584 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 215307 1435 588 9 0 210286 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 861228
[startup+0.101377 s]
/proc/loadavg: 1.92 1.98 1.96 3/72 16064
/proc/meminfo: memFree=1806720/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=865884 CPUtime=0.09
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 3795 0 1 0 8 1 0 0 18 0 9 0 1981451669 886665216 3246 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 216471 3246 1720 9 0 211026 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 865884
[startup+0.301416 s]
/proc/loadavg: 1.92 1.98 1.96 3/72 16064
/proc/meminfo: memFree=1806720/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=866408 CPUtime=0.29
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 6028 0 1 0 26 3 0 0 18 0 9 0 1981451669 887201792 5402 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 216602 5402 1956 9 0 211130 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 866408
[startup+0.701484 s]
/proc/loadavg: 1.92 1.98 1.96 3/72 16064
/proc/meminfo: memFree=1806720/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=866952 CPUtime=0.68
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 14292 281 1 0 62 6 0 0 18 0 9 0 1981451669 887758848 9870 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 216738 9870 2630 9 0 211244 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 866952
[startup+1.50263 s]
/proc/loadavg: 1.92 1.98 1.96 3/81 16077
/proc/meminfo: memFree=1776440/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=866952 CPUtime=1.47
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 14629 281 1 0 140 7 0 0 18 0 9 0 1981451669 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 216738 10206 2631 9 0 211244 0
[pid=16064/tid=16066] ppid=16062 vsize=866952 CPUtime=1.21
/proc/16064/task/16066/stat : 16066 (java) R 16062 16064 15383 0 -1 64 11143 281 1 0 116 5 0 0 25 0 9 0 1981451670 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4126833575 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16067] ppid=16062 vsize=866952 CPUtime=0.03
/proc/16064/task/16067/stat : 16067 (java) S 16062 16064 15383 0 -1 64 2054 281 0 0 3 0 0 0 17 0 9 0 1981451671 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16068] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16068/stat : 16068 (java) S 16062 16064 15383 0 -1 64 14 281 0 0 0 0 0 0 16 0 9 0 1981451671 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16069] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16069/stat : 16069 (java) S 16062 16064 15383 0 -1 64 8 281 0 0 0 0 0 0 16 0 9 0 1981451671 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16070] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16070/stat : 16070 (java) S 16062 16064 15383 0 -1 64 1 281 0 0 0 0 0 0 24 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=16064/tid=16071] ppid=16062 vsize=866952 CPUtime=0.2
/proc/16064/task/16071/stat : 16071 (java) S 16062 16064 15383 0 -1 64 586 281 0 0 20 0 0 0 15 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16072] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16072/stat : 16072 (java) S 16062 16064 15383 0 -1 64 2 281 0 0 0 0 0 0 25 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=16064/tid=16073] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16073/stat : 16073 (java) S 16062 16064 15383 0 -1 64 9 281 0 0 0 0 0 0 15 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 866952
Solver just ended. Dumping a history of the last processes samples
[startup+1.70267 s]
/proc/loadavg: 1.92 1.98 1.96 3/81 16077
/proc/meminfo: memFree=1776440/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=866952 CPUtime=1.67
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 14630 281 1 0 160 7 0 0 18 0 9 0 1981451669 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 216738 10206 2631 9 0 211244 0
[pid=16064/tid=16066] ppid=16062 vsize=866952 CPUtime=1.41
/proc/16064/task/16066/stat : 16066 (java) R 16062 16064 15383 0 -1 64 11143 281 1 0 136 5 0 0 25 0 9 0 1981451670 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4126808942 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16067] ppid=16062 vsize=866952 CPUtime=0.03
/proc/16064/task/16067/stat : 16067 (java) S 16062 16064 15383 0 -1 64 2054 281 0 0 3 0 0 0 17 0 9 0 1981451671 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16068] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16068/stat : 16068 (java) S 16062 16064 15383 0 -1 64 14 281 0 0 0 0 0 0 16 0 9 0 1981451671 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16069] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16069/stat : 16069 (java) S 16062 16064 15383 0 -1 64 8 281 0 0 0 0 0 0 16 0 9 0 1981451671 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16070] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16070/stat : 16070 (java) S 16062 16064 15383 0 -1 64 1 281 0 0 0 0 0 0 24 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=16064/tid=16071] ppid=16062 vsize=866952 CPUtime=0.2
/proc/16064/task/16071/stat : 16071 (java) S 16062 16064 15383 0 -1 64 587 281 0 0 20 0 0 0 15 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16072] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16072/stat : 16072 (java) S 16062 16064 15383 0 -1 64 2 281 0 0 0 0 0 0 25 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=16064/tid=16073] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16073/stat : 16073 (java) S 16062 16064 15383 0 -1 64 9 281 0 0 0 0 0 0 15 0 9 0 1981451673 887758848 10206 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.67
Current children cumulated vsize (KiB) 866952
[startup+1.80269 s]
/proc/loadavg: 1.92 1.98 1.96 3/81 16077
/proc/meminfo: memFree=1776440/2055920 swapFree=4180456/4192956
[pid=16064] ppid=16062 vsize=866952 CPUtime=1.76
/proc/16064/stat : 16064 (java) S 16062 16064 15383 0 -1 0 14735 281 1 0 169 7 0 0 18 0 9 0 1981451669 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/16064/statm: 216738 10308 2631 9 0 211244 0
[pid=16064/tid=16066] ppid=16062 vsize=866952 CPUtime=1.5
/proc/16064/task/16066/stat : 16066 (java) S 16062 16064 15383 0 -1 64 11247 281 1 0 145 5 0 0 25 0 9 0 1981451670 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16067] ppid=16062 vsize=866952 CPUtime=0.03
/proc/16064/task/16067/stat : 16067 (java) S 16062 16064 15383 0 -1 64 2054 281 0 0 3 0 0 0 17 0 9 0 1981451671 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16068] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16068/stat : 16068 (java) S 16062 16064 15383 0 -1 64 14 281 0 0 0 0 0 0 16 0 9 0 1981451671 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16069] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16069/stat : 16069 (java) S 16062 16064 15383 0 -1 64 8 281 0 0 0 0 0 0 16 0 9 0 1981451671 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16070] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16070/stat : 16070 (java) S 16062 16064 15383 0 -1 64 1 281 0 0 0 0 0 0 24 0 9 0 1981451673 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=16064/tid=16071] ppid=16062 vsize=866952 CPUtime=0.2
/proc/16064/task/16071/stat : 16071 (java) S 16062 16064 15383 0 -1 64 588 281 0 0 20 0 0 0 15 0 9 0 1981451673 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=16064/tid=16072] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16072/stat : 16072 (java) S 16062 16064 15383 0 -1 64 2 281 0 0 0 0 0 0 25 0 9 0 1981451673 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=16064/tid=16073] ppid=16062 vsize=866952 CPUtime=0
/proc/16064/task/16073/stat : 16073 (java) S 16062 16064 15383 0 -1 64 9 281 0 0 0 0 0 0 15 0 9 0 1981451673 887758848 10308 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.76
Current children cumulated vsize (KiB) 866952
Child status: 0
Real time (s): 1.82343
CPU time (s): 1.78573
CPU user time (s): 1.69574
CPU system time (s): 0.089986
CPU usage (%): 97.9324
Max. virtual memory (cumulated for all children) (KiB): 866952
getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.69574
system time used= 0.089986
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 15044
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 1140
involuntary context switches= 1184
runsolver used 0.001999 second user time and 0.014997 second system time
The end
Begin job on node19 at 2008-07-02 20:52:53
IDJOB=1045011
IDBENCH=53650
IDSOLVER=364
FILE ID=node19/1045011-1215024773
PBS_JOBID= 7874432
Free space on /tmp= 66552 MiB
SOLVER NAME= Abscon 112v4 ESAC
BENCH NAME= CPAI08/csp/magicSquare/normalized-magicSquare-6_glb.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax BENCHNAME
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1045011-1215024773/watcher-1045011-1215024773 -o /tmp/evaluation-result-1045011-1215024773/solver-1045011-1215024773 -C 1800 -W 2200 -M 900 --output-limit 1,15 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax HOME/instance-1045011-1215024773.xml
TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB
MD5SUM BENCH= a959366b31290b0d2733a5a45c43baf0
RANDOM SEED=33520175
node19.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) CPU 3.00GHz
stepping : 3
cpu MHz : 3000.263
cache size : 2048 KB
fpu : yes
fpu_exception : yes
cpuid level : 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips : 5931.00
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) CPU 3.00GHz
stepping : 3
cpu MHz : 3000.263
cache size : 2048 KB
fpu : yes
fpu_exception : yes
cpuid level : 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips : 5586.94
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:
/proc/meminfo:
MemTotal: 2055920 kB
MemFree: 1807200 kB
Buffers: 18336 kB
Cached: 151840 kB
SwapCached: 6760 kB
Active: 127160 kB
Inactive: 65428 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 2055920 kB
LowFree: 1807200 kB
SwapTotal: 4192956 kB
SwapFree: 4180456 kB
Dirty: 2144 kB
Writeback: 0 kB
Mapped: 30040 kB
Slab: 41264 kB
Committed_AS: 3389068 kB
PageTables: 1856 kB
VmallocTotal: 536870911 kB
VmallocUsed: 264952 kB
VmallocChunk: 536605679 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB
Free space on /tmp at the end= 66548 MiB
End job on node19 at 2008-07-02 20:52:55