Trace number 1783542

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 0.130979 0.131637

General information on the benchmark

Namecrafted/Medium/contest05/pebbling/
unsat-grid-pbl-0080.sat05-1344.reshuffled-07.cnf
MD5SUM35f2aba974a0579245ba9b669f0484ae
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.067989
Satisfiable
(Un)Satisfiability was proved
Number of variables6480
Number of clauses12722
Sum of the clauses size50722
Maximum clause length4
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 280
Number of clauses of size 30
Number of clauses of size 412640
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-1783542-1241861796.cnf
0.00/0.00	c found header 'p cnf 6480 12722'
0.00/0.01	c finished parsing
0.00/0.01	c
0.00/0.01	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.01	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.01	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.01	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.01	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.01	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.01	c
0.00/0.01	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.01	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.01	c
0.00/0.01	c starting search after 0.0 seconds
0.00/0.01	c no decision limit
0.00/0.01	c
0.00/0.01	c       original/binary      fixed     eliminated      learned       agility
0.00/0.01	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.01	c
0.00/0.01	c *    0.0    12720    6478      2     0      0       0      0    0.0   0    1
0.06/0.08	c -    0.1    10013    5674      2     0    804       0   1000    0.0   0    2
0.06/0.08	c -    0.1     9710    5580      2     0    898       0   1000    0.0   0    2
0.06/0.08	c -    0.1     9614    5549      2     0    929       0   1000    0.0   0    2
0.06/0.08	c -    0.1     9514    5519      2     0    959       0   1000    0.0   0    2
0.06/0.08	c -    0.1     9213    5426      2     0   1052       0   1000    0.0   0    2
0.06/0.08	c -    0.1     9209    5425      2     0   1053       0   1000    0.0   0    2
0.06/0.08	c -    0.1     8911    5329      2     0   1149       0   1000    0.0   0    2
0.06/0.08	c -    0.1     8711    5263      2     0   1215       0   1000    0.0   0    2
0.06/0.08	c -    0.1     8413    5172      2     0   1306       0   1000    0.0   0    2
0.06/0.08	c -    0.1     8314    5144      2     0   1334       0   1000    0.0   0    2
0.06/0.08	c -    0.1     8211    5112      2     0   1366       0   1000    0.0   0    2
0.06/0.09	c -    0.1     8110    5082      2     0   1396       0   1000    0.0   0    2
0.06/0.09	c -    0.1     7909    5021      2     0   1457       0   1000    0.0   0    2
0.06/0.09	c -    0.1     7809    4990      2     0   1488       0   1000    0.0   0    2
0.06/0.09	c -    0.1     7610    4930      2     0   1548       0   1000    0.0   0    2
0.06/0.09	c -    0.1     7411    4870      2     0   1608       0   1000    0.0   0    2
0.06/0.09	c -    0.1     7312    4840      2     0   1638       0   1000    0.0   0    2
0.06/0.09	c -    0.1     7208    4809      2     0   1669       0   1000    0.0   0    2
0.06/0.09	c
0.06/0.09	c       original/binary      fixed     eliminated      learned       agility
0.06/0.09	c   seconds        variables     equivalent    conflicts       height       MB
0.06/0.09	c
0.06/0.09	c -    0.1     7007    4745      2     0   1733       0   1000    0.0   0    2
0.06/0.09	c -    0.1     6906    4714      2     0   1764       0   1000    0.0   0    2
0.06/0.09	c -    0.1     6807    4684      2     0   1794       0   1000    0.0   0    2
0.06/0.09	c -    0.1     6708    4644      2     0   1834       0   1000    0.0   0    2
0.06/0.09	c -    0.1     6607    4609      2     0   1869       0   1000    0.0   0    2
0.06/0.09	c -    0.1     6408    4541      2     0   1937       0   1000    0.0   0    2
0.06/0.09	c -    0.1     6305    4491      2     0   1987       0   1000    0.0   0    2
0.06/0.10	c -    0.1     6104    4408      2     0   2070       0   1000    0.0   0    2
0.06/0.10	c -    0.1     6007    4375      2     0   2103       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5909    4340      2     0   2138       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5608    4247      2     0   2231       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5511    4216      2     0   2262       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5507    4215      2     0   2263       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5310    4153      2     0   2325       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5307    4152      2     0   2326       0   1000    0.0   0    2
0.09/0.10	c -    0.1     5006    4055      2     0   2423       0   1000    0.0   0    2
0.09/0.10	c -    0.1     4908    4025      2     0   2453       0   1000    0.0   0    2
0.09/0.10	c -    0.1     4809    3994      2     0   2484       0   1000    0.0   0    2
0.09/0.10	c -    0.1     4708    3964      2     0   2514       0   1000    0.0   0    2
0.09/0.10	c
0.09/0.10	c       original/binary      fixed     eliminated      learned       agility
0.09/0.10	c   seconds        variables     equivalent    conflicts       height       MB
0.09/0.10	c
0.09/0.10	c -    0.1     4510    3903      2     0   2575       0   1000    0.0   0    2
0.09/0.10	c -    0.1     4409    3873      2     0   2605       0   1000    0.0   0    2
0.09/0.10	c -    0.1     4307    3842      2     0   2636       0   1000    0.0   0    2
0.09/0.11	c -    0.1     4208    3811      2     0   2667       0   1000    0.0   0    2
0.09/0.11	c -    0.1     4105    3776      2     0   2702       0   1000    0.0   0    2
0.09/0.11	c -    0.1     3909    3718      2     0   2760       0   1000    0.0   0    2
0.09/0.11	c -    0.1     3810    3687      2     0   2791       0   1000    0.0   0    2
0.09/0.11	c -    0.1     3408    3564      2     0   2914       0   1000    0.0   0    2
0.09/0.11	c -    0.1     3211    3505      2     0   2973       0   1000    0.0   0    2
0.09/0.11	c -    0.1     2807    3378      2     0   3100       0   1000    0.0   0    2
0.09/0.11	c -    0.1     2707    3347      2     0   3131       0   1000    0.0   0    2
0.09/0.11	c -    0.1     2606    3316      2     0   3162       0   1000    0.0   0    2
0.09/0.11	c -    0.1     2409    3252      2     0   3226       0   1000    0.0   0    2
0.09/0.11	c -    0.1     2309    3222      2     0   3256       0   1000    0.0   0    2
0.09/0.11	c -    0.1     2306    3221      2     0   3257       0   1000    0.0   0    2
0.09/0.12	c -    0.1     1809    3073      2     0   3405       0   1000    0.0   0    2
0.09/0.12	c -    0.1     1807    3072      2     0   3406       0   1000    0.0   0    2
0.09/0.12	c -    0.1     1409    2945      2     0   3533       0   1000    0.0   0    2
0.09/0.12	c -    0.1     1207    2884      2     0   3594       0   1000    0.0   0    2
0.09/0.12	c
0.09/0.12	c       original/binary      fixed     eliminated      learned       agility
0.09/0.12	c   seconds        variables     equivalent    conflicts       height       MB
0.09/0.12	c
0.09/0.12	c -    0.1     1109    2855      2     0   3623       0   1000    0.0   0    2
0.09/0.12	c -    0.1     1008    2819      2     0   3659       0   1000    0.0   0    2
0.09/0.12	c -    0.1      908    2788      2     0   3690       0   1000    0.0   0    2
0.09/0.12	c -    0.1      808    2755      2     0   3723       0   1000    0.0   0    2
0.09/0.12	c -    0.1      705    2723      2     0   3755       0   1000    0.0   0    2
0.09/0.12	c -    0.1      609    2687      2     0   3791       0   1000    0.0   0    2
0.09/0.12	c -    0.1      509    2651      2     0   3827       0   1000    0.0   0    2
0.09/0.12	c -    0.1      407    2616      2     0   3862       0   1000    0.0   0    2
0.09/0.12	c -    0.1      306    2585      2     0   3893       0   1000    0.0   0    2
0.09/0.13	c -    0.1      208    2548      2     0   3930       0   1000    0.0   0    2
0.09/0.13	c -    0.1      105    2517      2     0   3961       0   1000    0.0   0    2
0.09/0.13	c s    0.1       10    2469     11     0   4000       0      0    0.0   0    2
0.09/0.13	c l    0.1       10    2469     11     0   4000       0   1000    0.0   0    2
0.09/0.13	c 0    0.1       10    2469     11     0   4000       1      0    0.0   0    2
0.09/0.13	c
0.09/0.13	s UNSATISFIABLE
0.09/0.13	c
0.09/0.13	c 1 conflicts, 0 decisions, 0 random
0.09/0.13	c 0 iterations, 0 restarts, 0 skipped
0.09/0.13	c 0 enlarged, 3150 shrunken, 0 rescored, 0 rebiased
0.09/0.13	c 1 simplifications, 0 reductions
0.09/0.13	c
0.09/0.13	c vars: 11 fixed, 0 equiv, 4000 elim, 0 merged
0.09/0.13	c elim: 19282 resolutions, 1 phases, 0 rounds
0.09/0.13	c sbst: 0% substituted, 0.0% nots, 0.0% ands, 0.0% xors, 0.0% ites
0.09/0.13	c arty: 0.00 and 0.00 xor average arity
0.09/0.13	c prbe: 12956 probed, 1 phases, 1 rounds
0.09/0.13	c prbe: 0 failed, 0 lifted, 0 merged
0.09/0.13	c sccs: 0 non trivial, 0 fixed, 0 merged
0.09/0.13	c hash: 0 units, 0 merged
0.09/0.13	c mins: 0 learned, 0% deleted, 0 strong, 0 depth
0.09/0.13	c subs: 1 forward, 8568 backward, 3 doms
0.09/0.13	c strs: 8728 forward, 884 backward
0.09/0.13	c doms: 3 dominators, 0 high, 0 low
0.09/0.13	c prps: 13135 propagations, 0.10 megaprops
0.09/0.13	c
0.09/0.13	c 0.1 seconds, 2 MB max, 1 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-1783542-1241861796/watcher-1783542-1241861796 -o /tmp/evaluation-result-1783542-1241861796/solver-1783542-1241861796 -C 5000 -W 6000 -M 1800 HOME/precosat HOME/instance-1783542-1241861796.cnf 

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): 6000 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: 0.00 0.00 0.00 2/64 23402
/proc/meminfo: memFree=1597952/2055920 swapFree=4181456/4192956
[pid=23402] ppid=23400 vsize=1816 CPUtime=0
/proc/23402/stat : 23402 (precosat) R 23400 23402 23365 0 -1 4194304 343 0 0 0 0 0 0 0 18 0 1 0 214212583 1859584 328 1992294400 134512640 135151029 4294956240 18446744073709551615 134682423 0 0 4096 17442 0 0 0 17 1 0 0
/proc/23402/statm: 454 328 63 155 0 297 0

[startup+0.067062 s]
/proc/loadavg: 0.00 0.00 0.00 2/64 23402
/proc/meminfo: memFree=1597952/2055920 swapFree=4181456/4192956
[pid=23402] ppid=23400 vsize=3044 CPUtime=0.06
/proc/23402/stat : 23402 (precosat) R 23400 23402 23365 0 -1 4194304 679 0 0 0 6 0 0 0 18 0 1 0 214212583 3117056 663 1992294400 134512640 135151029 4294956240 18446744073709551615 134519498 0 0 4096 17442 0 0 0 17 1 0 0
/proc/23402/statm: 761 663 79 155 0 604 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3044

[startup+0.101066 s]
/proc/loadavg: 0.00 0.00 0.00 2/64 23402
/proc/meminfo: memFree=1597952/2055920 swapFree=4181456/4192956
[pid=23402] ppid=23400 vsize=3044 CPUtime=0.09
/proc/23402/stat : 23402 (precosat) R 23400 23402 23365 0 -1 4194304 693 0 0 0 9 0 0 0 18 0 1 0 214212583 3117056 677 1992294400 134512640 135151029 4294956240 18446744073709551615 134704289 0 0 4096 17442 0 0 0 17 1 0 0
/proc/23402/statm: 761 677 79 155 0 604 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3044

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

Child status: 20
Real time (s): 0.131637
CPU time (s): 0.130979
CPU user time (s): 0.12798
CPU system time (s): 0.002999
CPU usage (%): 99.5001
Max. virtual memory (cumulated for all children) (KiB): 3044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.12798
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 702
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= 1

runsolver used 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node26 at 2009-05-09 11:36:36
IDJOB=1783542
IDBENCH=24589
IDSOLVER=607
FILE ID=node26/1783542-1241861796
PBS_JOBID= 9264586
Free space on /tmp= 66100 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT07/crafted/Medium/contest05/pebbling/unsat-grid-pbl-0080.sat05-1344.reshuffled-07.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1783542-1241861796/watcher-1783542-1241861796 -o /tmp/evaluation-result-1783542-1241861796/solver-1783542-1241861796 -C 5000 -W 6000 -M 1800  HOME/precosat HOME/instance-1783542-1241861796.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 35f2aba974a0579245ba9b669f0484ae
RANDOM SEED=15956626

node26.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		: 3000.261
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	: 5914.62
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		: 3000.261
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:       1599072 kB
Buffers:         37520 kB
Cached:         342008 kB
SwapCached:       5352 kB
Active:          59064 kB
Inactive:       328240 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1599072 kB
SwapTotal:     4192956 kB
SwapFree:      4181456 kB
Dirty:            1196 kB
Writeback:           0 kB
Mapped:          13488 kB
Slab:            55552 kB
Committed_AS:   698672 kB
PageTables:       1368 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= 66100 MiB
End job on node26 at 2009-05-09 11:36:36