Trace number 1773641

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
precosat 236UNSAT 9.8925 9.89532

General information on the benchmark

NameAPPLICATIONS/bitverif/
minandmaxor/minandmaxor032.cnf
MD5SUM25c7914ccc82f6f574febbd03924feed
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark7.06992
Satisfiable
(Un)Satisfiability was proved
Number of variables16239
Number of clauses48332
Sum of the clauses size112772
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 232220
Number of clauses of size 316110
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 PicoSATLight Version 236 3e7a3f8825c0b9e241f38a63fee5517540b2feca
0.00/0.00	c Copyright (C) 2009, Armin Biere, JKU, Linz, Austria.  All rights reserved.
0.00/0.00	c Released on Sun Mar 22 10:16:26 CET 2009
0.00/0.00	c Compiled on Tue Mar 24 21:24:39 CET 2009
0.00/0.00	c g++ (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)
0.00/0.00	c -O3 -m32 -static -Wall -Wextra -DNDEBUG -DNLOGPRECO -DNSTATSPRECO
0.00/0.00	c -finline-limit=10000000 -fomit-frame-pointer -fno-exceptions
0.00/0.00	c Linux baghera 2.6.27.19-170.2.35.fc10.i686.PAE i686
0.00/0.00	c
0.00/0.00	c reading HOME/instance-1773641-1241185829.cnf
0.00/0.00	c found header 'p cnf 16239 48332'
0.01/0.06	c finished parsing
0.01/0.06	c
0.01/0.06	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.01/0.06	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.01/0.06	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.01/0.06	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.01/0.06	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.01/0.06	c --random=1 --spread=2000 --seed=0 --skip=25
0.01/0.06	c
0.01/0.06	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.01/0.06	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.01/0.06	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.01/0.06	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.01/0.06	c
0.01/0.06	c starting search after 0.1 seconds
0.01/0.06	c no decision limit
0.01/0.07	c
0.01/0.07	c       original/binary      fixed     eliminated      learned       agility
0.01/0.07	c   seconds        variables     equivalent    conflicts       height       MB
0.01/0.07	c
0.01/0.07	c *    0.1    48330   16237      2     0      0       0      0    0.0   0    4
0.79/0.86	c s    0.9    37556    4238     81    69  11851       0      0    0.0   0    4
0.79/0.86	c l    0.9    37556    4238     81    69  11851       0  20015    0.0   0    4
0.79/0.89	c R    0.9    38026    4238     81    69  11851     100    100  109.3  11    5
0.89/0.91	c R    0.9    38036    4237     81    70  11851     200    198  118.4  19    5
1.00/1.02	c R    1.0    39551    4237     81    70  11851     800    788  101.8  17    5
1.00/1.08	c B    1.1    42029    4237     81    70  11851    1000    988   97.9  12    5
1.19/1.28	c B    1.3    46028    4237     81    70  11851    2000   1954   88.0  16    6
1.29/1.38	c R    1.4    46203    4237     81    70  11851    2401   2354   77.4  13    6
1.79/1.89	c s    1.9    56336    4234     81    73  11851    4026   3961   80.1  16    6
2.39/2.47	c R    2.5    56724    4234     81    73  11851    6404   6332   85.4  16    7
2.79/2.84	c B    2.8    60346    4227     83    78  11851    8002   7924   80.9  19    8
3.69/3.78	c s    3.8    61664    4226     83    79  11851   11535  11284   81.7  18    8
4.79/4.88	c R    4.9    62915    4224     83    81  11851   16025  15754   79.6  12   10
6.09/6.10	c +    6.1    67224    4195     85   108  11851   20015  22016   77.6  14   11
6.59/6.67	c s    6.7    63166    4151     88   126  11874   20402  15495   77.8  19    9
6.59/6.67	c -    6.7    63166    4151     88   126  11874   20402  21796   77.8  19    9
7.48/7.59	c B    7.6    63290    4151     88   126  11874   24008  19091   79.4  22   10
7.78/7.81	c +    7.8    63305    4151     88   126  11874   24765  23975   79.4  20   11
9.59/9.67	c
9.59/9.67	c       original/binary      fixed     eliminated      learned       agility
9.59/9.67	c   seconds        variables     equivalent    conflicts       height       MB
9.59/9.67	c
9.59/9.67	c s    9.7    43363    3618    189   558  11874   30557  20296   77.9  12    9
9.59/9.67	c -    9.7    43363    3618    189   558  11874   30557  21578   77.9  12    9
9.59/9.67	c +    9.7    43363    3618    189   558  11874   30557  23735   77.9  12    9
9.80/9.89	c 0    9.9    44590    3022    675   668  11874   31444  21176   77.1  20   10
9.80/9.89	c
9.80/9.89	s UNSATISFIABLE
9.80/9.89	c
9.80/9.89	c 31444 conflicts, 162566 decisions, 12 random
9.80/9.89	c 8 iterations, 134 restarts, 5 skipped
9.80/9.89	c 3 enlarged, 115 shrunken, 307 rescored, 14 rebiased
9.80/9.89	c 5 simplifications, 0 reductions
9.80/9.89	c
9.80/9.89	c vars: 675 fixed, 668 equiv, 11874 elim, 688 merged
9.80/9.89	c elim: 423947 resolutions, 2 phases, 2 rounds
9.80/9.89	c sbst: 83% substituted, 1.6% nots, 97.7% ands, 0.1% xors, 0.6% ites
9.80/9.89	c arty: 2.27 and 2.00 xor average arity
9.80/9.89	c prbe: 18336 probed, 9 phases, 2 rounds
9.80/9.89	c prbe: 57 failed, 65 lifted, 27 merged
9.80/9.89	c sccs: 18 non trivial, 0 fixed, 83 merged
9.80/9.89	c hash: 4 units, 578 merged
9.80/9.89	c mins: 1417353 learned, 20% deleted, 21 strong, 90 depth
9.80/9.89	c subs: 130 forward, 202 backward, 16406 doms
9.80/9.89	c strs: 63 forward, 67 backward
9.80/9.89	c doms: 20997 dominators, 15617 high, 137 low
9.80/9.89	c prps: 10902694 propagations, 1.10 megaprops
9.80/9.89	c
9.80/9.89	c 9.9 seconds, 13 MB max, 7 MB recycled

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1773641-1241185829/watcher-1773641-1241185829 -o /tmp/evaluation-result-1773641-1241185829/solver-1773641-1241185829 -C 10000 -W 12000 -M 1800 HOME/precosat HOME/instance-1773641-1241185829.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 10000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 10030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 12000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 0.99 0.99 3/64 24006
/proc/meminfo: memFree=1831616/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=2160 CPUtime=0
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 430 0 0 0 0 0 0 0 18 0 1 0 146616121 2211840 415 1992294400 134512640 135151029 4294956240 18446744073709551615 134682423 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 540 415 63 155 0 383 0

[startup+0.0163719 s]
/proc/loadavg: 1.00 0.99 0.99 3/64 24006
/proc/meminfo: memFree=1831616/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=2820 CPUtime=0.01
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 604 0 0 0 1 0 0 0 18 0 1 0 146616121 2887680 589 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 705 590 63 155 0 548 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 2820

[startup+0.101382 s]
/proc/loadavg: 1.00 0.99 0.99 3/64 24006
/proc/meminfo: memFree=1831616/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=6104 CPUtime=0.09
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 1559 0 0 0 9 0 0 0 18 0 1 0 146616121 6250496 1445 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 1526 1446 79 155 0 1369 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 6104

[startup+0.301404 s]
/proc/loadavg: 1.00 0.99 0.99 3/64 24006
/proc/meminfo: memFree=1831616/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=7972 CPUtime=0.29
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 2125 0 0 0 28 1 0 0 19 0 1 0 146616121 8163328 1882 1992294400 134512640 135151029 4294956240 18446744073709551615 134521882 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 1993 1882 79 155 0 1836 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 7972

[startup+0.701452 s]
/proc/loadavg: 1.00 0.99 0.99 3/64 24006
/proc/meminfo: memFree=1831616/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=10416 CPUtime=0.69
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 2806 0 0 0 68 1 0 0 22 0 1 0 146616121 10665984 2434 1992294400 134512640 135151029 4294956240 18446744073709551615 134548384 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 2604 2434 79 155 0 2447 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 10416

[startup+1.50154 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1822384/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=9904 CPUtime=1.49
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 2818 0 0 0 148 1 0 0 25 0 1 0 146616121 10141696 2317 1992294400 134512640 135151029 4294956240 18446744073709551615 134554571 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 2476 2317 79 155 0 2319 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 9904

[startup+3.10173 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1821936/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=10420 CPUtime=3.09
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 3076 0 0 0 308 1 0 0 25 0 1 0 146616121 10670080 2446 1992294400 134512640 135151029 4294956240 18446744073709551615 134554578 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 2605 2446 79 155 0 2448 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 10420

[startup+6.3011 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1820216/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=12980 CPUtime=6.29
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 4056 0 0 0 627 2 0 0 25 0 1 0 146616121 13291520 3088 1992294400 134512640 135151029 4294956240 18446744073709551615 134521914 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 3245 3088 79 155 0 3088 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 12980

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

[startup+7.90129 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1818744/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=13244 CPUtime=7.88
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 4640 0 0 0 786 2 0 0 25 0 1 0 146616121 13561856 3185 1992294400 134512640 135151029 4294956240 18446744073709551615 134574641 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 3311 3185 79 155 0 3154 0
Current children cumulated CPU time (s) 7.88
Current children cumulated vsize (KiB) 13244

[startup+8.70138 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1818680/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=13508 CPUtime=8.69
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 4699 0 0 0 867 2 0 0 25 0 1 0 146616121 13832192 3244 1992294400 134512640 135151029 4294956240 18446744073709551615 134580711 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 3377 3244 79 155 0 3220 0
Current children cumulated CPU time (s) 8.69
Current children cumulated vsize (KiB) 13508

[startup+9.50147 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1818680/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=14564 CPUtime=9.49
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 4959 0 0 0 946 3 0 0 25 0 1 0 146616121 14913536 3504 1992294400 134512640 135151029 4294956240 18446744073709551615 134554814 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 3641 3504 79 155 0 3484 0
Current children cumulated CPU time (s) 9.49
Current children cumulated vsize (KiB) 14564

[startup+9.7015 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1818680/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=14632 CPUtime=9.69
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 5084 0 0 0 966 3 0 0 25 0 1 0 146616121 14983168 3500 1992294400 134512640 135151029 4294956240 18446744073709551615 134554644 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 3658 3500 79 155 0 3501 0
Current children cumulated CPU time (s) 9.69
Current children cumulated vsize (KiB) 14632

[startup+9.80151 s]
/proc/loadavg: 1.00 0.99 0.99 2/65 24007
/proc/meminfo: memFree=1817656/2055920 swapFree=4180392/4192956
[pid=24006] ppid=24004 vsize=14632 CPUtime=9.8
/proc/24006/stat : 24006 (precosat) R 24004 24006 23913 0 -1 4194304 5084 0 0 0 977 3 0 0 25 0 1 0 146616121 14983168 3500 1992294400 134512640 135151029 4294956240 18446744073709551615 134554756 0 0 4096 17442 0 0 0 17 1 0 0
/proc/24006/statm: 3658 3500 79 155 0 3501 0
Current children cumulated CPU time (s) 9.8
Current children cumulated vsize (KiB) 14632

Child status: 20
Real time (s): 9.89532
CPU time (s): 9.8925
CPU user time (s): 9.8575
CPU system time (s): 0.034994
CPU usage (%): 99.9714
Max. virtual memory (cumulated for all children) (KiB): 14632

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 9.8575
system time used= 0.034994
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5085
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= 2
involuntary context switches= 26

runsolver used 0.014997 second user time and 0.026995 second system time

The end

Launcher Data 

Begin job on node20 at 2009-05-01 15:50:29
IDJOB=1773641
IDBENCH=70768
IDSOLVER=607
FILE ID=node20/1773641-1241185829
PBS_JOBID= 9224602
Free space on /tmp= 66440 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/APPLICATIONS/bitverif/minandmaxor/minandmaxor032.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1773641-1241185829/watcher-1773641-1241185829 -o /tmp/evaluation-result-1773641-1241185829/solver-1773641-1241185829 -C 10000 -W 12000 -M 1800  HOME/precosat HOME/instance-1773641-1241185829.cnf

TIME LIMIT= 10000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 25c7914ccc82f6f574febbd03924feed
RANDOM SEED=1733858254

node20.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		: 3000.214
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		: 3000.214
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:       1832096 kB
Buffers:         53624 kB
Cached:          86732 kB
SwapCached:       6320 kB
Active:          19688 kB
Inactive:       128712 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1832096 kB
SwapTotal:     4192956 kB
SwapFree:      4180392 kB
Dirty:            1444 kB
Writeback:           0 kB
Mapped:          13492 kB
Slab:            61496 kB
Committed_AS:   774332 kB
PageTables:       1396 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= 66440 MiB
End job on node20 at 2009-05-01 15:50:39