Trace number 310905

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, and are wall clock time (not CPU 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
MXC 2007-02-08SAT 20.024 20.0414

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1762612346-15-SAT.cnf
MD5SUMe5673a7c266f877ed2c58f7b531e89ad
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.052991
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

19.96/20.03	c MXC attempting /tmp/evaluation/310905-1172562866/instance-310905-1172562866.cnf
19.96/20.03	c 0 assignments made, starting to guess now
19.96/20.03	c ===================================[MXC]=====================================
19.96/20.03	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
19.96/20.03	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
19.96/20.03	c =============================================================================
19.96/20.03	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
19.96/20.03	c |       100 |    3221     9663 |    1180      99    1561    15.8 |  0.000 % |
19.96/20.03	c |       250 |    3221     9663 |    1298     247    3925    15.9 |  0.000 % |
19.96/20.03	c |       475 |    3221     9663 |    1428     471    8606    18.3 |  0.000 % |
19.96/20.03	c |       812 |    3221     9663 |    1570     808   14315    17.7 |  0.000 % |
19.96/20.03	c |      1318 |    3221     9663 |    1728    1313   24695    18.8 |  0.000 % |
19.96/20.03	c |      2079 |    3221     9663 |    1900    1209   24056    19.9 |  0.000 % |
19.96/20.03	c |      3218 |    3221     9663 |    2090    1395   26811    19.2 |  0.000 % |
19.96/20.03	c |      4926 |    3221     9663 |    2300    2057   40635    19.8 |  0.000 % |
19.96/20.03	c |      7491 |    3221     9663 |    2530    1171   21281    18.2 |  0.000 % |
19.96/20.03	c |     11335 |    3221     9663 |    2783    2484   50702    20.4 |  0.000 % |
19.96/20.03	c |     17101 |    3221     9663 |    3061    2685   47693    17.8 |  0.000 % |
19.96/20.03	c |     25750 |    3221     9663 |    3367    2152   36615    17.0 |  0.000 % |
19.96/20.03	c |     38724 |    3221     9663 |    3704    3338   59008    17.7 |  0.000 % |
19.96/20.03	c |     58186 |    3221     9663 |    4074    2441   43292    17.7 |  0.000 % |
19.96/20.03	c |     87378 |    3221     9663 |    4482    3136   54088    17.2 |  0.000 % |
19.96/20.03	c |    131167 |    3221     9663 |    4930    4371   79566    18.2 |  0.000 % |
19.96/20.03	c |    196851 |    3221     9663 |    5423    3568   63422    17.8 |  0.000 % |
19.96/20.03	c 20.020s elapsed
19.96/20.03	c restarts: 17
19.96/20.03	c decisions: 251987
19.96/20.03	c propagations: 34744067
19.96/20.03	c conflicts: 205352
19.96/20.03	s SATISFIABLE
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Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node18/watcher-310905-1172562866 -o ROOT/results/node18/solver-310905-1172562866 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310905-1172562866/mxc /tmp/evaluation/310905-1172562866/instance-310905-1172562866.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 20977
/proc/meminfo: memFree=1668600/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=1200 CPUtime=0
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 170 0 0 0 0 0 0 0 18 0 1 0 276241160 1228800 154 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134775504 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 300 154 57 122 0 174 0

[startup+0.106715 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 20977
/proc/meminfo: memFree=1668600/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=1332 CPUtime=0.1
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 207 0 0 0 10 0 0 0 18 0 1 0 276241160 1363968 191 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134530114 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 333 191 59 122 0 207 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1332

[startup+0.514753 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 20977
/proc/meminfo: memFree=1668600/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=1596 CPUtime=0.51
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 262 0 0 0 51 0 0 0 22 0 1 0 276241160 1634304 244 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519243 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 399 244 67 122 0 273 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1596

[startup+1.33483 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1667696/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=1716 CPUtime=1.33
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 293 0 0 0 133 0 0 0 25 0 1 0 276241160 1757184 275 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519194 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 429 275 67 122 0 303 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1716

[startup+2.97099 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1667504/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=1848 CPUtime=2.96
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 328 0 0 0 296 0 0 0 25 0 1 0 276241160 1892352 310 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519587 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 462 310 67 122 0 336 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1848

[startup+6.25331 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1667184/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=1980 CPUtime=6.24
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 377 0 0 0 624 0 0 0 25 0 1 0 276241160 2027520 359 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519200 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 495 359 67 122 0 369 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1980

[startup+12.7079 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666872/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2236 CPUtime=12.7
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 435 0 0 0 1270 0 0 0 25 0 1 0 276241160 2289664 417 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519605 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 559 417 67 122 0 433 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 2236

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

[startup+13.118 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666872/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2236 CPUtime=13.11
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 450 0 0 0 1311 0 0 0 25 0 1 0 276241160 2289664 432 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519251 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 559 432 67 122 0 433 0
Current children cumulated CPU time (s) 13.11
Current children cumulated vsize (KiB) 2236

[startup+16.3943 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666680/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2348 CPUtime=16.38
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 468 0 0 0 1638 0 0 0 25 0 1 0 276241160 2404352 450 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519280 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 587 450 67 122 0 461 0
Current children cumulated CPU time (s) 16.38
Current children cumulated vsize (KiB) 2348

[startup+18.0305 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666680/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2348 CPUtime=18.02
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 477 0 0 0 1802 0 0 0 25 0 1 0 276241160 2404352 459 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519599 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 587 459 67 122 0 461 0
Current children cumulated CPU time (s) 18.02
Current children cumulated vsize (KiB) 2348

[startup+18.8505 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666680/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2348 CPUtime=18.84
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 477 0 0 0 1884 0 0 0 25 0 1 0 276241160 2404352 459 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519191 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 587 459 67 122 0 461 0
Current children cumulated CPU time (s) 18.84
Current children cumulated vsize (KiB) 2348

[startup+19.6706 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666680/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2472 CPUtime=19.66
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 483 0 0 0 1966 0 0 0 25 0 1 0 276241160 2531328 465 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519964 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 618 465 67 122 0 492 0
Current children cumulated CPU time (s) 19.66
Current children cumulated vsize (KiB) 2472

[startup+19.8746 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666680/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2472 CPUtime=19.86
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 483 0 0 0 1986 0 0 0 25 0 1 0 276241160 2531328 465 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519240 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 618 465 67 122 0 492 0
Current children cumulated CPU time (s) 19.86
Current children cumulated vsize (KiB) 2472

[startup+19.9766 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 20978
/proc/meminfo: memFree=1666680/2055920 swapFree=4192812/4192956
[pid=20977] ppid=20975 vsize=2472 CPUtime=19.96
/proc/20977/stat : 20977 (mxc) R 20975 20977 20065 0 -1 4194304 487 0 0 0 1996 0 0 0 25 0 1 0 276241160 2531328 469 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134530175 0 0 4096 0 0 0 0 17 1 0 0
/proc/20977/statm: 618 469 67 122 0 492 0
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (KiB) 2472

Child status: 10
Real time (s): 20.0414
CPU time (s): 20.024
CPU user time (s): 20.017
CPU system time (s): 0.006998
CPU usage (%): 99.9128
Max. virtual memory (cumulated for all children) (KiB): 2472

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 20.017
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 489
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= 12
involuntary context switches= 404

runsolver used 0.021996 second user time and 0.051992 second system time

The end

Launcher Data (download as text)

Begin job on node18 on Tue Feb 27 07:54:26 UTC 2007

IDJOB= 310905
IDBENCH= 20299
IDSOLVER= 107
FILE ID= node18/310905-1172562866

PBS_JOBID= 3971663

Free space on /tmp= 66557 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1762612346-15-SAT.cnf
COMMAND LINE= /tmp/evaluation/310905-1172562866/mxc /tmp/evaluation/310905-1172562866/instance-310905-1172562866.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node18/watcher-310905-1172562866 -o ROOT/results/node18/solver-310905-1172562866 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310905-1172562866/mxc /tmp/evaluation/310905-1172562866/instance-310905-1172562866.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  e5673a7c266f877ed2c58f7b531e89ad

RANDOM SEED= 198383376

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node18.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.236
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		: 3000.236
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:       1668944 kB
Buffers:         47916 kB
Cached:         211232 kB
SwapCached:          0 kB
Active:         238168 kB
Inactive:        80780 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1668944 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:             660 kB
Writeback:           0 kB
Mapped:          78732 kB
Slab:            53612 kB
Committed_AS:   959272 kB
PageTables:       1668 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= 66557 MiB

End job on node18 on Tue Feb 27 07:54:46 UTC 2007