Trace number 4264257

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
AbsCon-basic 2017-06-11SAT 1.12209 0.71046603

DiagnosticValue
WRONG_DECISIONS21

General information on the benchmark

NameCryptoPuzzle/CryptoPuzzle-m1-s1/
CryptoPuzzle-summer-school-coolest.xml
MD5SUM555d6e0ee5aa3949136a27d145c75cc2
Bench CategoryCSP (decision problem)
Best result obtained on this benchmarkSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark0.013133
Satisfiable
(Un)Satisfiability was proved
Number of variables33
Number of constraints18
Number of domains2
Minimum domain size2
Maximum domain size10
Distribution of domain sizes[{"size":2,"count":7},{"size":10,"count":10}]
Minimum variable degree0
Maximum variable degree7
Distribution of variable degrees[{"degree":0,"count":16},{"degree":2,"count":2},{"degree":3,"count":9},{"degree":4,"count":2},{"degree":5,"count":2},{"degree":6,"count":1},{"degree":7,"count":1}]
Minimum constraint arity1
Maximum constraint arity10
Distribution of constraint arities[{"arity":1,"count":4},{"arity":2,"count":1},{"arity":3,"count":2},{"arity":4,"count":10},{"arity":10,"count":1}]
Number of extensional constraints0
Number of intensional constraints17
Distribution of constraint types[{"type":"intension","count":17},{"type":"allDifferent","count":1}]
Optimization problemNO
Type of objective

Solver Data 

0.21/0.37	
0.21/0.37	AbsCon 2 
0.21/0.37	
0.55/0.56	  Solving XCSP3-instance-4264257-1502321120 as a CSP
0.55/0.56	  Loading variables...
0.78/0.61	  Loading constraints...
0.78/0.65	  Solver SolverBacktrack being built...
0.78/0.65	
0.78/0.68	  Preprocessing : gac=true, ccks=638, filters=14, revisions=47 (useless=44), AC=24, removals=24, inconsistent=false
0.78/0.68	
1.09/0.70	
1.09/0.70	v <instantiation id='sol1' type='solution'>  <list> l[] C[] </list>  <values> * * 1 * 2 * * 0 * * * 9 8 * 4 * * 6 7 5 3 * * * * * 0 1 0 1 0 0 1 </values>  </instantiation>
1.09/0.70	s SATISFIABLE
1.09/0.70	
1.09/0.70	d WRONG_DECISIONS 21

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2013 Olivier ROUSSEL

This is runsolver version 3.3.7 (svn: 2553)

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-4264257-1502321120/watcher-4264257-1502321120 -o /tmp/evaluation-result-4264257-1502321120/solver-4264257-1502321120 -C 2520 -W 2520 -M 15500 --bin-var /tmp/runsolver-exch-node134-1502258125-5061 --watchdog 2580 java -jar HOME/AbsCon-basic.jar HOME/instance-4264257-1502321120.xml 

pid=18397
running on 4 cores: 1,3,5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2520 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2550 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2520 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: 8192 KiB


[startup+0 s]
/proc/loadavg: 1.93 1.79 1.84 2/203 18400
/proc/meminfo: memFree=30984276/32770624 swapFree=0/532744
[pid=18400] ppid=18397 vsize=23672 CPUtime=0 cores=1,3,5,7
/proc/18400/stat : 18400 (runsolver) D 18397 18400 31388 0 -1 4202560 107 0 0 0 0 0 0 0 20 0 1 0 79618203 24240128 108 18446744073709551615 4194304 4338465 140721019325824 140721019323464 140265086300887 0 0 1 24578 18446744071580418449 0 0 17 7 0 0 0 0 0 6438912 6441760 24461312 140721019330720 140721019331145 140721019331145 140721019334602 0
/proc/18400/statm: 5918 108 54 36 0 2156 0

[startup+0.100154 s]
/proc/loadavg: 1.93 1.79 1.84 2/203 18400
/proc/meminfo: memFree=30984276/32770624 swapFree=0/532744
[pid=18400] ppid=18397 vsize=23672 CPUtime=0 cores=1,3,5,7
/proc/18400/stat : 18400 (runsolver) D 18397 18400 31388 0 -1 4202560 107 0 0 0 0 0 0 0 20 0 1 0 79618203 24240128 108 18446744073709551615 4194304 4338465 140721019325824 140721019323464 140265086300887 0 0 1 24578 18446744071580418449 0 0 17 7 0 0 0 0 0 6438912 6441760 24461312 140721019330720 140721019331145 140721019331145 140721019334602 0
/proc/18400/statm: 5918 108 54 36 0 2156 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 23672

[startup+0.200334 s]
/proc/loadavg: 1.93 1.79 1.84 2/203 18400
/proc/meminfo: memFree=30984276/32770624 swapFree=0/532744
[pid=18400] ppid=18397 vsize=10484492 CPUtime=0.05 cores=1,3,5,7
/proc/18400/stat : 18400 (java) S 18397 18400 31388 0 -1 1077944320 4539 0 0 0 4 1 0 0 20 0 14 0 79618203 10736119808 5584 18446744073709551615 4194304 4196468 140728734054688 140728734037232 139868225720055 0 0 1 16800974 18446744073709551615 0 0 17 1 0 0 10 0 0 6293624 6294260 18812928 140728734061005 140728734061134 140728734061134 140728734064591 0
/proc/18400/statm: 2621123 5584 2576 1 0 2610620 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 10484492

[startup+0.300258 s]
/proc/loadavg: 1.93 1.79 1.84 2/203 18400
/proc/meminfo: memFree=30984276/32770624 swapFree=0/532744
[pid=18400] ppid=18397 vsize=10551180 CPUtime=0.21 cores=1,3,5,7
/proc/18400/stat : 18400 (java) S 18397 18400 31388 0 -1 1077944320 8258 0 0 0 19 2 0 0 20 0 15 0 79618203 10804408320 9113 18446744073709551615 4194304 4196468 140728734054688 140728734037232 139868225720055 0 0 1 16800974 18446744073709551615 0 0 17 1 0 0 10 0 0 6293624 6294260 18812928 140728734061005 140728734061134 140728734061134 140728734064591 0
/proc/18400/statm: 2637795 9113 2864 1 0 2627261 0
Current children cumulated CPU time (s) 0.21
Current children cumulated vsize (KiB) 10551180

[startup+0.700837 s]
/proc/loadavg: 1.93 1.79 1.84 2/203 18400
/proc/meminfo: memFree=30984276/32770624 swapFree=0/532744
[pid=18400] ppid=18397 vsize=10621952 CPUtime=1.09 cores=1,3,5,7
/proc/18400/stat : 18400 (java) S 18397 18400 31388 0 -1 1077944320 13845 0 0 0 104 5 0 0 20 0 16 0 79618203 10876878848 21963 18446744073709551615 4194304 4196468 140728734054688 140728734037232 139868225720055 0 0 1 16800974 18446744073709551615 0 0 17 1 0 0 10 0 0 6293624 6294260 18812928 140728734061005 140728734061134 140728734061134 140728734064591 0
/proc/18400/statm: 2655488 21963 3088 1 0 2644414 0
Current children cumulated CPU time (s) 1.09
Current children cumulated vsize (KiB) 10621952

Solver just ended.
??? exit watcher main loop
??? sigkill at end of watcher main loop
??? kill 18400 sig 9
??? end of watcher thread
Dumping a history of the last processes samples

[startup+0.700837 s]
/proc/loadavg: 1.93 1.79 1.84 2/203 18400
/proc/meminfo: memFree=30984276/32770624 swapFree=0/532744
[pid=18400] ppid=18397 vsize=10621952 CPUtime=1.09 cores=1,3,5,7
/proc/18400/stat : 18400 (java) S 18397 18400 31388 0 -1 1077944320 13845 0 0 0 104 5 0 0 20 0 16 0 79618203 10876878848 21963 18446744073709551615 4194304 4196468 140728734054688 140728734037232 139868225720055 0 0 1 16800974 18446744073709551615 0 0 17 1 0 0 10 0 0 6293624 6294260 18812928 140728734061005 140728734061134 140728734061134 140728734064591 0
/proc/18400/statm: 2655488 21963 3088 1 0 2644414 0
Current children cumulated CPU time (s) 1.09
Current children cumulated vsize (KiB) 10621952

Child status: 0
Real time (s): 0.710466
CPU time (s): 1.12209
CPU user time (s): 1.06102
CPU system time (s): 0.061073
CPU usage (%): 157.938
Max. virtual memory (cumulated for all children) (KiB): 10621952

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.06102
system time used= 0.061073
maximum resident set size= 90308
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 13923
page faults= 0
swaps= 0
block input operations= 0
block output operations= 72
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 1406
involuntary context switches= 3

??? join timestamper begins
??? join timestamper ends
??? end of timestamper thread
runsolver used 0.005243 second user time and 0.005243 second system time

The end

Launcher Data 

Begin job on node134 at 2017-08-10 01:11:23
IDJOB=4264257
IDBENCH=139166
IDSOLVER=2652
FILE ID=node134/4264257-1502321120
RUNJOBID= node134-1502258125-5061
PBS_JOBID= 
Free space on /tmp= 62024 MiB

SOLVER NAME= AbsCon-basic 2017-06-11
BENCH NAME= XCSP17/CryptoPuzzle/CryptoPuzzle-m1-s1/CryptoPuzzle-summer-school-coolest.xml
COMMAND LINE= java -jar HOME/AbsCon-basic.jar BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4264257-1502321120/watcher-4264257-1502321120 -o /tmp/evaluation-result-4264257-1502321120/solver-4264257-1502321120 -C 2520 -W 2520 -M 15500 --bin-var /tmp/runsolver-exch-node134-1502258125-5061 --watchdog 2580  java -jar HOME/AbsCon-basic.jar HOME/instance-4264257-1502321120.xml

TIME LIMIT= 2520 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 555d6e0ee5aa3949136a27d145c75cc2
RANDOM SEED=388798961

node134.alineos.net Linux 3.10.0-514.16.1.el7.x86_64 #1 SMP Wed Apr 12 15:04:24 UTC 2017

/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:
performance

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5333.43
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5333.43
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5333.43
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5333.43
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
microcode	: 0x19
cpu MHz		: 2668.000
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 sep 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 nopl 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 dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:       32770624 kB
MemFree:        30984276 kB
MemAvailable:   31848012 kB
Buffers:          262808 kB
Cached:           895636 kB
SwapCached:            0 kB
Active:           788964 kB
Inactive:         563968 kB
Active(anon):     196336 kB
Inactive(anon):    31224 kB
Active(file):     592628 kB
Inactive(file):   532744 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:      67108860 kB
SwapFree:       67108860 kB
Dirty:              8152 kB
Writeback:             4 kB
AnonPages:        194144 kB
Mapped:            60108 kB
Shmem:             33468 kB
Slab:             135204 kB
SReclaimable:     108396 kB
SUnreclaim:        26808 kB
KernelStack:        3568 kB
PageTables:         6404 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83494172 kB
Committed_AS:    1050284 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      354332 kB
VmallocChunk:   34341910524 kB
HardwareCorrupted:     0 kB
AnonHugePages:     86016 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      101760 kB
DirectMap2M:    33443840 kB

Free space on /tmp at the end= 62016 MiB
End job on node134 at 2017-08-10 01:11:24