Trace number 4264271

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 1.51631 0.82795298

DiagnosticValue
WRONG_DECISIONS0

General information on the benchmark

NameDomino/
Domino-m1-s1/Domino-100-500.xml
MD5SUM7044d68d6214da7da3276e5f7be25845
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 benchmark0.0074740001
Satisfiable
(Un)Satisfiability was proved
Number of variables100
Number of constraints2
Number of domains1
Minimum domain size500
Maximum domain size500
Distribution of domain sizes[{"size":500,"count":100}]
Minimum variable degree1
Maximum variable degree2
Distribution of variable degrees[{"degree":1,"count":98},{"degree":2,"count":2}]
Minimum constraint arity2
Maximum constraint arity100
Distribution of constraint arities[{"arity":2,"count":1},{"arity":100,"count":1}]
Number of extensional constraints0
Number of intensional constraints1
Distribution of constraint types[{"type":"intension","count":1},{"type":"allEqual","count":1}]
Optimization problemNO
Type of objective

Solver Data 

0.27/0.34	
0.27/0.34	AbsCon 2 
0.27/0.34	
0.64/0.52	  Solving XCSP3-instance-4264271-1502320968 as a CSP
0.64/0.52	  Loading variables...
0.64/0.56	  Loading constraints...
0.90/0.68	  Solver SolverBacktrack being built...
0.90/0.68	
1.45/0.80	  Preprocessing : gac=true, ccks=250498, filters=49900, revisions=501 (useless=2), AC=49900, removals=49900, inconsistent=false
1.45/0.80	
1.45/0.81	
1.45/0.81	v <instantiation id='sol1' type='solution'>  <list> x[] </list>  <values> 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 499 </values>  </instantiation>
1.45/0.81	s SATISFIABLE
1.45/0.81	
1.45/0.81	d WRONG_DECISIONS 0

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-4264271-1502320968/watcher-4264271-1502320968 -o /tmp/evaluation-result-4264271-1502320968/solver-4264271-1502320968 -C 2520 -W 2520 -M 15500 --bin-var /tmp/runsolver-exch-node132-1502257024-9067 --watchdog 2580 java -jar HOME/AbsCon-basic.jar HOME/instance-4264271-1502320968.xml 

pid=21847
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: 2.15 2.06 1.97 4/198 21850
/proc/meminfo: memFree=31082644/32770624 swapFree=0/418324
[pid=21850] ppid=21847 vsize=23672 CPUtime=0 cores=1,3,5,7
/proc/21850/stat : 21850 (runsolver) D 21847 21850 4525 0 -1 4202560 108 0 0 0 0 0 0 0 20 0 1 0 131749730 24240128 106 18446744073709551615 4194304 4338465 140733840197088 140733840194728 140334840333015 0 0 1 24578 18446744071580418449 0 0 17 5 0 0 0 0 0 6438912 6441760 7172096 140733840199840 140733840200265 140733840200265 140733840203722 0
/proc/21850/statm: 5918 106 53 36 0 2156 0

[startup+0.100081 s]
/proc/loadavg: 2.15 2.06 1.97 4/198 21850
/proc/meminfo: memFree=31082644/32770624 swapFree=0/418324
[pid=21850] ppid=21847 vsize=9936560 CPUtime=0.01 cores=1,3,5,7
/proc/21850/stat : 21850 (java) S 21847 21850 4525 0 -1 1077944320 3365 0 0 0 1 0 0 0 20 0 6 0 131749730 10175037440 4565 18446744073709551615 4194304 4196468 140730303480336 140730303462880 140175059066615 0 0 1 16784584 18446744073709551615 0 0 17 7 0 0 8 0 0 6293624 6294260 36315136 140730303488461 140730303488590 140730303488590 140730303492047 0
/proc/21850/statm: 2484140 4565 1918 1 0 2473637 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 9936560

[startup+0.202515 s]
/proc/loadavg: 2.15 2.06 1.97 4/198 21850
/proc/meminfo: memFree=31082644/32770624 swapFree=0/418324
[pid=21850] ppid=21847 vsize=10551180 CPUtime=0.09 cores=1,3,5,7
/proc/21850/stat : 21850 (java) S 21847 21850 4525 0 -1 1077944320 4916 0 0 0 8 1 0 0 20 0 15 0 131749730 10804408320 6911 18446744073709551615 4194304 4196468 140730303480336 140730303462880 140175059066615 0 0 1 16800974 18446744073709551615 0 0 17 7 0 0 8 0 0 6293624 6294260 36315136 140730303488461 140730303488590 140730303488590 140730303492047 0
/proc/21850/statm: 2637795 6911 2677 1 0 2627261 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 10551180

[startup+0.300298 s]
/proc/loadavg: 2.15 2.06 1.97 4/198 21850
/proc/meminfo: memFree=31082644/32770624 swapFree=0/418324
[pid=21850] ppid=21847 vsize=10553264 CPUtime=0.27 cores=1,3,5,7
/proc/21850/stat : 21850 (java) S 21847 21850 4525 0 -1 1077944320 8398 0 0 0 25 2 0 0 20 0 15 0 131749730 10806542336 9716 18446744073709551615 4194304 4196468 140730303480336 140730303462880 140175059066615 0 0 1 16800974 18446744073709551615 0 0 17 7 0 0 8 0 0 6293624 6294260 36315136 140730303488461 140730303488590 140730303488590 140730303492047 0
/proc/21850/statm: 2638316 9716 2911 1 0 2627261 0
Current children cumulated CPU time (s) 0.27
Current children cumulated vsize (KiB) 10553264

[startup+0.700245 s]
/proc/loadavg: 2.15 2.06 1.97 4/198 21850
/proc/meminfo: memFree=31082644/32770624 swapFree=0/418324
[pid=21850] ppid=21847 vsize=10621952 CPUtime=1.16 cores=1,3,5,7
/proc/21850/stat : 21850 (java) S 21847 21850 4525 0 -1 1077944320 13039 0 0 0 111 5 0 0 20 0 16 0 131749730 10876878848 20744 18446744073709551615 4194304 4196468 140730303480336 140730303462880 140175059066615 0 0 1 16800974 18446744073709551615 0 0 17 7 0 0 8 0 0 6293624 6294260 36315136 140730303488461 140730303488590 140730303488590 140730303492047 0
/proc/21850/statm: 2655488 20744 3091 1 0 2644414 0
Current children cumulated CPU time (s) 1.16
Current children cumulated vsize (KiB) 10621952

Solver just ended.
??? exit watcher main loop
??? sigkill at end of watcher main loop
??? kill 21850 sig 9
??? end of watcher thread
Dumping a history of the last processes samples

[startup+0.800845 s]
/proc/loadavg: 2.15 2.06 1.97 4/198 21850
/proc/meminfo: memFree=31082644/32770624 swapFree=0/418324
[pid=21850] ppid=21847 vsize=10621952 CPUtime=1.45 cores=1,3,5,7
/proc/21850/stat : 21850 (java) S 21847 21850 4525 0 -1 1077944320 13149 0 0 0 140 5 0 0 20 0 16 0 131749730 10876878848 21818 18446744073709551615 4194304 4196468 140730303480336 140730303462880 140175059066615 0 0 1 16800974 18446744073709551615 0 0 17 7 0 0 8 0 0 6293624 6294260 36315136 140730303488461 140730303488590 140730303488590 140730303492047 0
/proc/21850/statm: 2655488 21818 3095 1 0 2644414 0
Current children cumulated CPU time (s) 1.45
Current children cumulated vsize (KiB) 10621952

Child status: 0
Real time (s): 0.827953
CPU time (s): 1.51631
CPU user time (s): 1.45199
CPU system time (s): 0.064328
CPU usage (%): 183.14
Max. virtual memory (cumulated for all children) (KiB): 10621952

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.45199
system time used= 0.064328
maximum resident set size= 90664
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 13379
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= 1487
involuntary context switches= 3

??? join timestamper begins
??? join timestamper ends
??? end of timestamper thread
runsolver used 0.002989 second user time and 0.00774 second system time

The end

Launcher Data 

Begin job on node132 at 2017-08-10 01:08:25
IDJOB=4264271
IDBENCH=138739
IDSOLVER=2652
FILE ID=node132/4264271-1502320968
RUNJOBID= node132-1502257024-9067
PBS_JOBID= 
Free space on /tmp= 62024 MiB

SOLVER NAME= AbsCon-basic 2017-06-11
BENCH NAME= XCSP17/Domino/Domino-m1-s1/Domino-100-500.xml
COMMAND LINE= java -jar HOME/AbsCon-basic.jar BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4264271-1502320968/watcher-4264271-1502320968 -o /tmp/evaluation-result-4264271-1502320968/solver-4264271-1502320968 -C 2520 -W 2520 -M 15500 --bin-var /tmp/runsolver-exch-node132-1502257024-9067 --watchdog 2580  java -jar HOME/AbsCon-basic.jar HOME/instance-4264271-1502320968.xml

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

MD5SUM BENCH= 7044d68d6214da7da3276e5f7be25845
RANDOM SEED=934176823

node132.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	: 5333.74
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	: 5333.74
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	: 5333.74
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	: 5333.74
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:        31082644 kB
MemAvailable:   31833912 kB
Buffers:          275008 kB
Cached:           780056 kB
SwapCached:            0 kB
Active:           797368 kB
Inactive:         459144 kB
Active(anon):     202240 kB
Inactive(anon):    40820 kB
Active(file):     595128 kB
Inactive(file):   418324 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:      67108860 kB
SwapFree:       67108860 kB
Dirty:              7952 kB
Writeback:             4 kB
AnonPages:        201164 kB
Mapped:            67428 kB
Shmem:             41660 kB
Slab:             134600 kB
SReclaimable:     107300 kB
SUnreclaim:        27300 kB
KernelStack:        3504 kB
PageTables:         5384 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83494172 kB
Committed_AS:    1167664 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      354332 kB
VmallocChunk:   34341910524 kB
HardwareCorrupted:     0 kB
AnonHugePages:    100352 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      114048 kB
DirectMap2M:    33431552 kB

Free space on /tmp at the end= 62016 MiB
End job on node132 at 2017-08-10 01:08:26