Trace number 1773721

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 2.78757 2.78895

General information on the benchmark

NameAPPLICATIONS/bitverif/
countbitssrl/countbitssrl016.cnf
MD5SUM505fee3283f518ccb9d234f549b3c214
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark2.75658
Satisfiable
(Un)Satisfiability was proved
Number of variables4567
Number of clauses13652
Sum of the clauses size31852
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 29100
Number of clauses of size 34550
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-1773721-1241186187.cnf
0.00/0.00	c found header 'p cnf 4567 13652'
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    13650    4565      2     0      0       0      0    0.0   0    1
0.09/0.15	c -    0.1    14949    2723   1062   782      0       0   1000    0.0   0    2
0.19/0.20	c -    0.2    11527     847   1062   782   1876       0   1000    0.0   0    2
0.19/0.23	c s    0.2     7517     661   1062   782   2062       0      0    0.0   0    1
0.19/0.23	c l    0.2     7517     661   1062   782   2062       0   4347    0.0   0    1
0.19/0.24	c R    0.2     7529     661   1062   782   2062     101    101   13.7  14    1
0.19/0.24	c R    0.2     7549     661   1062   782   2062     202    201   19.4  19    1
0.29/0.30	c R    0.3     7561     660   1062   783   2062     803    800   18.3  23    1
0.29/0.33	c B    0.3     7562     660   1062   783   2062    1000    997   17.7  26    1
0.39/0.44	c s    0.4     7545     660   1062   783   2062    1672   1667   17.3  25    1
0.49/0.51	c B    0.5     7550     660   1062   783   2062    2000   1994   17.4  25    1
0.49/0.58	c R    0.6     7561     660   1062   783   2062    2407   2400   16.4  23    1
0.69/0.71	c s    0.7     7563     660   1062   783   2062    3303   3296   16.5  28    1
0.79/0.87	c +    0.9     7567     660   1062   783   2062    4347   4781   16.0  29    2
1.00/1.02	c +    1.0     7572     660   1062   783   2062    5431   5259   15.4  30    2
1.00/1.07	c s    1.1     7570     660   1062   783   2062    5710   5065   15.2  19    2
1.19/1.21	c N    1.2     7571     660   1062   783   2062    6419   5264   14.8  34    2
1.19/1.27	c +    1.3     7573     660   1062   783   2062    6785   5784   14.6  30    2
1.39/1.47	c B    1.5     7575     660   1062   783   2062    8005   5790   14.0  31    2
1.49/1.52	c
1.49/1.52	c       original/binary      fixed     eliminated      learned       agility
1.49/1.52	c   seconds        variables     equivalent    conflicts       height       MB
1.49/1.52	c
1.49/1.52	c s    1.5     7575     660   1062   783   2062    8238   5789   13.8  31    2
1.49/1.55	c +    1.6     7582     660   1062   783   2062    8481   6362   13.9  27    2
1.89/1.90	c +    1.9     7586     660   1062   783   2062   10601   6998   13.1  35    2
1.99/2.03	c s    2.0     7587     660   1062   783   2062   11403   7029   12.9  28    2
2.29/2.31	c +    2.3     8547     657   1062   786   2062   13252   7697   12.3  31    2
2.49/2.59	c s    2.6     6628     635   1064   806   2062   14795   5862   12.0  29    1
2.49/2.59	c -    2.6     6628     635   1064   806   2062   14795   7236   12.0  29    1
2.69/2.72	c +    2.7     9004     588   1084   833   2062   15572   7959   11.7  32    2
2.69/2.78	c 0    2.8    13538      23   1676   806   2062   15918   6951   11.6  27    2
2.69/2.78	c
2.69/2.78	s UNSATISFIABLE
2.69/2.78	c
2.69/2.78	c 15918 conflicts, 20184 decisions, 1 random
2.69/2.78	c 6 iterations, 18 restarts, 44 skipped
2.69/2.78	c 7 enlarged, 166 shrunken, 155 rescored, 9 rebiased
2.69/2.78	c 7 simplifications, 0 reductions
2.69/2.78	c
2.69/2.78	c vars: 1676 fixed, 806 equiv, 2062 elim, 909 merged
2.69/2.78	c elim: 69875 resolutions, 1 phases, 1 rounds
2.69/2.78	c sbst: 84% substituted, 0.3% nots, 93.6% ands, 6.1% xors, 0.0% ites
2.69/2.78	c arty: 2.00 and 2.00 xor average arity
2.69/2.78	c prbe: 4747 probed, 3 phases, 2 rounds
2.69/2.78	c prbe: 3 failed, 900 lifted, 466 merged
2.69/2.78	c sccs: 2 non trivial, 0 fixed, 22 merged
2.69/2.78	c hash: 10 units, 421 merged
2.69/2.78	c mins: 254589 learned, 65% deleted, 11 strong, 43 depth
2.69/2.78	c subs: 158 forward, 298 backward, 6474 doms
2.69/2.78	c strs: 566 forward, 17 backward
2.69/2.78	c doms: 7374 dominators, 5994 high, 155 low
2.69/2.78	c prps: 3455569 propagations, 1.24 megaprops
2.69/2.78	c
2.69/2.78	c 2.8 seconds, 2 MB max, 2 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-1773721-1241186187/watcher-1773721-1241186187 -o /tmp/evaluation-result-1773721-1241186187/solver-1773721-1241186187 -C 10000 -W 12000 -M 1800 HOME/precosat HOME/instance-1773721-1241186187.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: 0.84 0.94 0.90 3/64 21543
/proc/meminfo: memFree=1289656/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=1332 CPUtime=0
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 232 0 0 0 0 0 0 0 18 0 1 0 146652421 1363968 217 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 333 217 63 155 0 176 0

[startup+0.045446 s]
/proc/loadavg: 0.84 0.94 0.90 3/64 21543
/proc/meminfo: memFree=1289656/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=2920 CPUtime=0.04
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 659 0 0 0 4 0 0 0 18 0 1 0 146652421 2990080 643 1992294400 134512640 135151029 4294956240 18446744073709551615 134572540 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 730 643 79 155 0 573 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 2920

[startup+0.101452 s]
/proc/loadavg: 0.84 0.94 0.90 3/64 21543
/proc/meminfo: memFree=1289656/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=3052 CPUtime=0.09
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 706 0 0 0 9 0 0 0 18 0 1 0 146652421 3125248 657 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 763 657 79 155 0 606 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3052

[startup+0.301474 s]
/proc/loadavg: 0.84 0.94 0.90 3/64 21543
/proc/meminfo: memFree=1289656/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=3252 CPUtime=0.29
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 808 0 0 0 29 0 0 0 19 0 1 0 146652421 3330048 694 1992294400 134512640 135151029 4294956240 18446744073709551615 134554756 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 813 694 79 155 0 656 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3252

[startup+0.701519 s]
/proc/loadavg: 0.84 0.94 0.90 3/64 21543
/proc/meminfo: memFree=1289656/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=3252 CPUtime=0.69
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 808 0 0 0 69 0 0 0 22 0 1 0 146652421 3330048 694 1992294400 134512640 135151029 4294956240 18446744073709551615 134554668 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 813 694 79 155 0 656 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 3252

[startup+1.50161 s]
/proc/loadavg: 0.84 0.94 0.90 2/65 21544
/proc/meminfo: memFree=1287152/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=3252 CPUtime=1.49
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 808 0 0 0 149 0 0 0 25 0 1 0 146652421 3330048 694 1992294400 134512640 135151029 4294956240 18446744073709551615 134554970 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 813 694 79 155 0 656 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 3252

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

[startup+2.3017 s]
/proc/loadavg: 0.84 0.94 0.90 2/65 21544
/proc/meminfo: memFree=1287024/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=3252 CPUtime=2.29
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 808 0 0 0 229 0 0 0 25 0 1 0 146652421 3330048 694 1992294400 134512640 135151029 4294956240 18446744073709551615 134551455 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 813 694 79 155 0 656 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 3252

[startup+2.70174 s]
/proc/loadavg: 0.84 0.94 0.90 2/65 21544
/proc/meminfo: memFree=1287024/2055920 swapFree=4192812/4192956
[pid=21543] ppid=21541 vsize=3252 CPUtime=2.69
/proc/21543/stat : 21543 (precosat) R 21541 21543 21506 0 -1 4194304 826 0 0 0 269 0 0 0 25 0 1 0 146652421 3330048 712 1992294400 134512640 135151029 4294956240 18446744073709551615 134552326 0 0 4096 17442 0 0 0 17 1 0 0
/proc/21543/statm: 813 712 79 155 0 656 0
Current children cumulated CPU time (s) 2.69
Current children cumulated vsize (KiB) 3252

Child status: 20
Real time (s): 2.78895
CPU time (s): 2.78757
CPU user time (s): 2.78458
CPU system time (s): 0.002999
CPU usage (%): 99.9506
Max. virtual memory (cumulated for all children) (KiB): 3252

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.78458
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= 827
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= 5

runsolver used 0.004999 second user time and 0.015997 second system time

The end

Launcher Data 

Begin job on node9 at 2009-05-01 15:56:27
IDJOB=1773721
IDBENCH=70783
IDSOLVER=607
FILE ID=node9/1773721-1241186187
PBS_JOBID= 9224606
Free space on /tmp= 66544 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/APPLICATIONS/bitverif/countbitssrl/countbitssrl016.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1773721-1241186187/watcher-1773721-1241186187 -o /tmp/evaluation-result-1773721-1241186187/solver-1773721-1241186187 -C 10000 -W 12000 -M 1800  HOME/precosat HOME/instance-1773721-1241186187.cnf

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

MD5SUM BENCH= 505fee3283f518ccb9d234f549b3c214
RANDOM SEED=661443885

node9.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		: 3000.240
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		: 3000.240
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:       1290072 kB
Buffers:         81424 kB
Cached:         570900 kB
SwapCached:          0 kB
Active:          32500 kB
Inactive:       633688 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1290072 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1024 kB
Writeback:           0 kB
Mapped:          23568 kB
Slab:            85684 kB
Committed_AS:   651372 kB
PageTables:       1388 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= 66540 MiB
End job on node9 at 2009-05-01 15:56:30