Trace number 3273745

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
sattime 2011-03-02SAT 8.35073 8.35139

General information on the benchmark

Namecrafted/spence/sgen/
sgen3-n220-s24359701-sat.cnf
MD5SUMceff918324677440f95867755c4e7133
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark5.76412
Satisfiable
(Un)Satisfiability was proved
Number of variables220
Number of clauses528
Sum of the clauses size1320
Maximum clause length5
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2440
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 588
Number of clauses of size over 50

Solver Data 

8.30/8.35	c 0 clauses are redundant and removed
8.30/8.35	c 0 vars are fixed and 0 clauses are removed after unit propagation
8.30/8.35	c 0 vars are fixed and 0 clauses are removed after lookahead
8.30/8.35	c initial seed is 1655220915
8.30/8.35	c try=1 flip j=32514487 walk=28127548 seed 1655220932
8.30/8.35	c A solution is found
8.30/8.35	s SATISFIABLE
8.30/8.35	v 1 -2 -3 -4 -5 6 -7 8 -9 -10 11 12 -13 -14 15 -16 17 -18 -19 20 -21 22 23 24 25 -26 27 28 29 -30 31 32 33 -34 -35 36 37 -38 -39 40 41 42 -43 -44 45 -46 47 48 49 50 -51 52 -53 54 55 -56 -57 -58 -59 60 -61 62 63 64 -65 66 67 -68 69 -70 71 -72 73 74 -75 76 -77 78 79 80 -81 -82 83 -84 -85 -86 87 88 89 -90 -91 92 93 94 95 -96 -97 -98 -99 100 -101 102 103 -104 105 -106 107 108 -109 -110 111 -112 -113 -114 -115 116 117 118 -119 120 -121 -122 123 124 -125 126 127 -128 -129 -130 -131 132 133 134 135 136 137 138 139 -140 -141 -142 -143 144 -145 146 -147 -148 -149 150 -151 -152 153 154 -155 -156 -157 -158 -159 160 161 -162 163 164 -165 166 -167 -168 169 -170 171 -172 173 174 175 176 177 -178 179 180 -181 -182 -183 184 185 186 187 188 189 190 191 192 -193 -194 195 196 -197 -198 199 200 201 -202 -203 -204 -205 206 -207 -208 209 -210 211 -212 213 -214 -215 -216 217 -218 -219 220 
8.30/8.35	v 0 
8.30/8.35	c Done (mycputime is 8 seconds)

Verifier Data 

OK

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-3273745-1303605037/watcher-3273745-1303605037 -o /tmp/evaluation-result-3273745-1303605037/solver-3273745-1303605037 -C 2400 -W 1300 -M 7680 sattime HOME/instance-3273745-1303605037.cnf 1655220915 

running on 2 cores: 1,3

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: 1.09 2.66 3.41 2/179 26089
/proc/meminfo: memFree=21252044/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=0 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 0 0 0 0 22 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4218506 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0

[startup+0.026888 s]
/proc/loadavg: 1.09 2.66 3.41 2/179 26089
/proc/meminfo: memFree=21252044/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=0.02 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 2 0 0 0 22 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4216780 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 990140

[startup+0.100937 s]
/proc/loadavg: 1.09 2.66 3.41 2/179 26089
/proc/meminfo: memFree=21252044/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=0.1 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 10 0 0 0 22 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4217152 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 990140

[startup+0.300839 s]
/proc/loadavg: 1.09 2.66 3.41 2/179 26089
/proc/meminfo: memFree=21252044/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=0.3 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 30 0 0 0 23 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4217060 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 990140

[startup+0.700767 s]
/proc/loadavg: 1.09 2.66 3.41 2/179 26089
/proc/meminfo: memFree=21252044/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=0.7 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 70 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4217291 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 990140

[startup+1.50063 s]
/proc/loadavg: 1.09 2.66 3.41 5/190 26110
/proc/meminfo: memFree=21233588/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=1.5 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 150 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4217201 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 990140

[startup+3.10034 s]
/proc/loadavg: 1.09 2.66 3.41 5/190 26110
/proc/meminfo: memFree=21232224/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=3.1 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 310 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4216704 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 3.1
Current children cumulated vsize (KiB) 990140

[startup+6.30083 s]
/proc/loadavg: 1.32 2.68 3.41 5/190 26111
/proc/meminfo: memFree=21231736/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=6.3 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 630 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4219020 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 6.3
Current children cumulated vsize (KiB) 990140

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

[startup+7.10063 s]
/proc/loadavg: 1.32 2.68 3.41 5/190 26111
/proc/meminfo: memFree=21231736/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=7.1 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 710 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4216803 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 7.1
Current children cumulated vsize (KiB) 990140

[startup+7.90049 s]
/proc/loadavg: 1.32 2.68 3.41 5/190 26111
/proc/meminfo: memFree=21231860/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=7.9 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 790 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4217201 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 7.9
Current children cumulated vsize (KiB) 990140

[startup+8.30041 s]
/proc/loadavg: 1.32 2.68 3.41 5/190 26111
/proc/meminfo: memFree=21231860/32950904 swapFree=67082284/67111528
[pid=26089] ppid=26087 vsize=990140 CPUtime=8.3 cores=1,3
/proc/26089/stat : 26089 (sattime) R 26087 26089 25382 0 -1 4202496 262 0 0 0 830 0 0 0 25 0 1 0 472103411 1013903360 203 33554432000 4194304 4228548 140733875092080 18446744073709551615 4217003 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/26089/statm: 247535 203 116 9 0 244692 0
Current children cumulated CPU time (s) 8.3
Current children cumulated vsize (KiB) 990140

Child status: 10
Real time (s): 8.35139
CPU time (s): 8.35073
CPU user time (s): 8.35073
CPU system time (s): 0
CPU usage (%): 99.9921
Max. virtual memory (cumulated for all children) (KiB): 990140

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 8.35073
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= 266
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= 3
involuntary context switches= 23

runsolver used 0.010998 second user time and 0.030995 second system time

The end

Launcher Data 

Begin job on node121 at 2011-04-24 02:30:37
IDJOB=3273745
IDBENCH=83146
IDSOLVER=1564
FILE ID=node121/3273745-1303605037
RUNJOBID= node121-1303605035-26069
PBS_JOBID= 13150620
Free space on /tmp= 72056 MiB

SOLVER NAME= sattime 2011-03-02
BENCH NAME= SAT11/crafted/spence/sgen/sgen3-n220-s24359701-sat.cnf
COMMAND LINE= sattime BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3273745-1303605037/watcher-3273745-1303605037 -o /tmp/evaluation-result-3273745-1303605037/solver-3273745-1303605037 -C 2400 -W 1300 -M 7680  sattime HOME/instance-3273745-1303605037.cnf 1655220915

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

MD5SUM BENCH= ceff918324677440f95867755c4e7133
RANDOM SEED=1655220915

node121.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		: 2666.817
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	: 5333.63
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		: 2666.817
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	: 5226.07
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		: 2666.817
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	: 5332.84
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		: 2666.817
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	: 5332.77
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		: 2666.817
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.817
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		: 2666.817
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		: 2666.817
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950904 kB
MemFree:      21252076 kB
Buffers:       2137468 kB
Cached:        9012400 kB
SwapCached:       2776 kB
Active:        8397680 kB
Inactive:      2792112 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950904 kB
LowFree:      21252076 kB
SwapTotal:    67111528 kB
SwapFree:     67082284 kB
Dirty:           15772 kB
Writeback:           0 kB
AnonPages:       37476 kB
Mapped:          14116 kB
Slab:           444768 kB
PageTables:       4912 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586980 kB
Committed_AS:  1198932 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= 72036 MiB
End job on node121 at 2011-04-24 02:30:45