Trace number 3384410

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
QuteRSat 2011-05-12 (fixed)UNSAT 2.43963 2.44211

General information on the benchmark

Nameapplication/jarvisalo/HWMCC10-combination-timeframe-expansion/
hwmcc10-timeframe-expansion-k50-bc57sensorsp3-tseitin.cnf
MD5SUM7dac843deb28c1c66e8118997464d4b0
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.744886
Satisfiable
(Un)Satisfiability was proved
Number of variables70297
Number of clauses194006
Sum of the clauses size452678
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 2129336
Number of clauses of size 364668
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data

0.00/0.00	c Set FPU double precision.
0.08/0.10	c Parse Cnf success: #var: 70297 #clause: 194006
0.08/0.10	c Find Units :          2
0.08/0.10	c Find Invs  :          0
0.08/0.12	c Find Ands  :      67698 AvgFaninNum: 2
0.08/0.13	c Find Xors  :          0 AvgFaninNum: nan
0.08/0.14	c Find Ite   :          0
0.08/0.17	c UnDirect variable: 0
0.08/0.17	c UnDirect to Direct Gate: 0
0.08/0.17	c Forced Direct Gate: 0 Unuse unDirect Gate: 0
0.08/0.18	c Break Cycle : 871
0.08/0.18	c Total Root : 1 Undef Var: 6499
0.19/0.21	c After covering, Total Root: 824 Leaf: 6466
0.19/0.21	c Variable( cover/uncovered/unused ): 70264 33 0
0.19/0.21	c Unit Clauses: 2
0.19/0.21	c Binary Clauses( cover/uncovered ): 127596 1740
0.19/0.21	c Clauses( cover/uncovered ): 63798 870
0.19/0.21	c Total Clauses( cover/uncovered ): 191396 2610 98.6547%
0.19/0.21	c Covered Ands: 63798 Invs: 0 Xors: 0 Ites: 0
0.19/0.22	c Uncover Clauses avg size: 2.33333 max size: 3
0.19/0.22	c Final circuit: i/l/o/s    6498       0    2610     67271
0.19/0.22	c CnfToAig: Time: 0.22 s
0.29/0.38	c TmMap: Set choices finish.
0.39/0.40	c TmMap: Set big and: 6135
0.39/0.40	c TmMap: Origin: 73770 ClauseNum: 201813 --> New: 27722 ClauseNum: 95465
0.39/0.40	c TmMap: Time: 0.04
0.79/0.87	c Simulation --> TransNum: 72466/95465 Try to Add: #clause: 62475 #xorclause: 0
0.89/0.91	c #var: 24815 #clauses: 47058 Solving... 
1.99/2.11	c Abstract SAT
2.09/2.17	c Simulation --> TransNum: 85901/95465 Try to Add: #clause: 1528 #xorclause: 0
2.09/2.17	c #var: 24904 #clauses: 31060 Solving... 
2.09/2.20	c Abstract SAT
2.21/2.27	c Simulation --> TransNum: 88120/95465 Try to Add: #clause: 1696 #xorclause: 0
2.21/2.27	c #var: 24942 #clauses: 31566 Solving... 
2.29/2.30	c Abstract SAT
2.29/2.30	c Simulation --> TransNum: 95465/95465 Try to Add: #clause: 6297 #xorclause: 0
2.29/2.30	c #var: 25110 #clauses: 31835 Solving... 
2.39/2.42	s UNSATISFIABLE
2.39/2.43	c CPU time: 2.43 s

Verifier Data

No possible verification on an UNSAT instance

Watcher Data

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 961)

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-3384410-1305545902/watcher-3384410-1305545902 -o /tmp/evaluation-result-3384410-1305545902/solver-3384410-1305545902 -C 5000 -W 5100 -M 15500 qutersat_release HOME/instance-3384410-1305545902.cnf 386594312 

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

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 5100 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: 1.93 1.99 1.98 2/361 1308
/proc/meminfo: memFree=10639944/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=18612 CPUtime=0 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) S 1306 1308 937 0 -1 4194304 114 0 0 0 0 0 0 0 25 0 1 0 666188207 19058688 69 33554432000 4194304 6014671 140735981786208 18446744073709551615 228117790343 0 2147483391 4096 0 18446744071699207358 0 0 17 1 0 0 0
/proc/1308/statm: 4653 69 51 445 0 90 0

[startup+0.0784761 s]
/proc/loadavg: 1.93 1.99 1.98 2/361 1308
/proc/meminfo: memFree=10639944/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=53468 CPUtime=0.06 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 6912 0 0 0 6 0 0 0 25 0 1 0 666188207 54751232 6849 33554432000 4194304 6014671 140735981786208 18446744073709551615 4778066 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 13367 6849 378 445 0 6912 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 53468

[startup+0.100476 s]
/proc/loadavg: 1.93 1.99 1.98 2/361 1308
/proc/meminfo: memFree=10639944/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=53468 CPUtime=0.08 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 7117 0 0 0 8 0 0 0 25 0 1 0 666188207 54751232 7054 33554432000 4194304 6014671 140735981786208 18446744073709551615 4795419 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 13367 7055 378 445 0 6912 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 53468

[startup+0.300437 s]
/proc/loadavg: 1.93 1.99 1.98 2/361 1308
/proc/meminfo: memFree=10639944/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=61788 CPUtime=0.29 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 9480 0 0 0 28 1 0 0 25 0 1 0 666188207 63270912 9417 33554432000 4194304 6014671 140735981786208 18446744073709551615 4257605 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 15447 9417 668 445 0 8992 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 61788

[startup+0.700361 s]
/proc/loadavg: 1.93 1.99 1.98 2/361 1308
/proc/meminfo: memFree=10639944/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=72864 CPUtime=0.69 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 12102 0 0 0 68 1 0 0 25 0 1 0 666188207 74612736 12039 33554432000 4194304 6014671 140735981786208 18446744073709551615 4243283 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 18216 12039 681 445 0 11761 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 72864

[startup+1.50022 s]
/proc/loadavg: 1.93 1.99 1.98 3/362 1309
/proc/meminfo: memFree=10591956/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=81068 CPUtime=1.49 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 12601 0 0 0 148 1 0 0 25 0 1 0 666188207 83013632 12538 33554432000 4194304 6014671 140735981786208 18446744073709551615 4422593 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 20267 12538 697 445 0 13812 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 81068

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

[startup+1.90014 s]
/proc/loadavg: 1.93 1.99 1.98 3/362 1309
/proc/meminfo: memFree=10591956/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=81068 CPUtime=1.89 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 12606 0 0 0 188 1 0 0 25 0 1 0 666188207 83013632 12543 33554432000 4194304 6014671 140735981786208 18446744073709551615 4424320 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 20267 12543 702 445 0 13812 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 81068

[startup+2.30108 s]
/proc/loadavg: 1.93 1.99 1.98 3/362 1309
/proc/meminfo: memFree=10583152/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=98488 CPUtime=2.29 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 15590 0 0 0 227 2 0 0 25 0 1 0 666188207 100851712 15513 33554432000 4194304 6014671 140735981786208 18446744073709551615 4383500 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 24622 15513 728 445 0 18167 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 98488

[startup+2.40105 s]
/proc/loadavg: 1.93 1.99 1.98 3/362 1309
/proc/meminfo: memFree=10583152/32951124 swapFree=54427468/67111528
[pid=1308] ppid=1306 vsize=98488 CPUtime=2.39 cores=1,3,5,7
/proc/1308/stat : 1308 (qutersat_releas) R 1306 1308 937 0 -1 4202496 15604 0 0 0 237 2 0 0 25 0 1 0 666188207 100851712 15527 33554432000 4194304 6014671 140735981786208 18446744073709551615 4422678 0 0 4096 16386 0 0 0 17 1 0 0 0
/proc/1308/statm: 24622 15527 728 445 0 18167 0
Current children cumulated CPU time (s) 2.39
Current children cumulated vsize (KiB) 98488

Child status: 0
Real time (s): 2.44211
CPU time (s): 2.43963
CPU user time (s): 2.41563
CPU system time (s): 0.023996
CPU usage (%): 99.8982
Max. virtual memory (cumulated for all children) (KiB): 98488

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.41563
system time used= 0.023996
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 15610
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= 7
involuntary context switches= 31

runsolver used 0.010998 second user time and 0.029995 second system time

The end

Launcher Data

Begin job on node138 at 2011-05-16 13:38:22
IDJOB=3384410
IDBENCH=82491
IDSOLVER=1868
FILE ID=node138/3384410-1305545902
RUNJOBID= node138-1305540197-957
PBS_JOBID= 13329215
Free space on /tmp= 73432 MiB

SOLVER NAME= QuteRSat 2011-05-12 (fixed)
BENCH NAME= SAT11/application/jarvisalo/HWMCC10-combination-timeframe-expansion/hwmcc10-timeframe-expansion-k50-bc57sensorsp3-tseitin.cnf
COMMAND LINE= qutersat_release BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3384410-1305545902/watcher-3384410-1305545902 -o /tmp/evaluation-result-3384410-1305545902/solver-3384410-1305545902 -C 5000 -W 5100 -M 15500  qutersat_release HOME/instance-3384410-1305545902.cnf 386594312

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 7dac843deb28c1c66e8118997464d4b0
RANDOM SEED=386594312

node138.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		: 2666.854
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	: 5333.70
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		: 2666.854
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	: 5332.75
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		: 2666.854
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	: 5332.82
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		: 2666.854
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	: 5332.75
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		: 2666.854
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	: 5332.80
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		: 2666.854
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	: 5332.75
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		: 2666.854
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	: 5332.82
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		: 2666.854
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:     32951124 kB
MemFree:      10640092 kB
Buffers:        306368 kB
Cached:        4393724 kB
SwapCached:      18496 kB
Active:       18703220 kB
Inactive:      3322864 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      10640092 kB
SwapTotal:    67111528 kB
SwapFree:     54427468 kB
Dirty:            4860 kB
Writeback:           8 kB
AnonPages:    17319340 kB
Mapped:          20520 kB
Slab:           133552 kB
PageTables:      85920 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS: 88022100 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= 73432 MiB
End job on node138 at 2011-05-16 13:38:25