Trace number 310946

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 2007-02-08UNSAT 74.9256 74.9785

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1230630010-06-UNSAT.cnf
MD5SUMf1d2cd08ac7f8096a38662a7d7275db8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark17.0164
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)

74.84/74.97	c MXC attempting /tmp/evaluation/310946-1172563197/instance-310946-1172563197.cnf
74.84/74.97	c 0 assignments made, starting to guess now
74.84/74.97	c ===================================[MXC]=====================================
74.84/74.97	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
74.84/74.97	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
74.84/74.97	c =============================================================================
74.84/74.97	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
74.84/74.97	c |       100 |    3221     9663 |    1180      99    1751    17.7 |  0.000 % |
74.84/74.97	c |       250 |    3221     9663 |    1298     245    4267    17.4 |  0.000 % |
74.84/74.97	c |       478 |    3221     9663 |    1428     473    8119    17.2 |  0.000 % |
74.84/74.97	c |       815 |    3221     9663 |    1570     809   15529    19.2 |  0.000 % |
74.84/74.97	c |      1321 |    3221     9663 |    1728    1311   26575    20.3 |  0.000 % |
74.84/74.97	c |      2080 |    3221     9663 |    1900    1203   22936    19.1 |  0.000 % |
74.84/74.97	c |      3219 |    3221     9663 |    2090    1389   24104    17.4 |  0.000 % |
74.84/74.97	c |      4928 |    3221     9663 |    2300    2052   35854    17.5 |  0.000 % |
74.84/74.97	c |      7490 |    3221     9663 |    2530    1164   21313    18.3 |  0.000 % |
74.84/74.97	c |     11336 |    3221     9663 |    2783    2480   57556    23.2 |  0.000 % |
74.84/74.97	c |     17102 |    3221     9663 |    3061    2680   53143    19.8 |  0.000 % |
74.84/74.97	c |     25751 |    3221     9663 |    3367    2144   47592    22.2 |  0.000 % |
74.84/74.97	c |     38725 |    3221     9663 |    3704    3336   78611    23.6 |  0.000 % |
74.84/74.97	c |     58186 |    3221     9663 |    4074    2430   47905    19.7 |  0.000 % |
74.84/74.97	c |     87382 |    3221     9663 |    4482    3125   61946    19.8 |  0.000 % |
74.84/74.97	c |    131171 |    3221     9663 |    4930    4361   96734    22.2 |  0.000 % |
74.84/74.97	c |    196856 |    3221     9663 |    5423    3549   72070    20.3 |  0.000 % |
74.84/74.97	c |    295383 |    3221     9663 |    5965    4523   91178    20.2 |  0.000 % |
74.84/74.97	c |    443173 |    3188     9564 |    6562    3206   63141    19.7 |  0.232 % |
74.84/74.97	c |    664856 |    3176     9528 |    7218    5159   83299    16.1 |  0.309 % |
74.84/74.97	c 74.930s elapsed
74.84/74.97	c restarts: 20
74.84/74.97	c decisions: 854139
74.84/74.97	c propagations: 117320642
74.84/74.97	c conflicts: 698480
74.84/74.97	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node30/watcher-310946-1172563197 -o ROOT/results/node30/solver-310946-1172563197 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310946-1172563197/mxc /tmp/evaluation/310946-1172563197/instance-310946-1172563197.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: 0.91 0.95 0.98 3/77 21272
/proc/meminfo: memFree=1812136/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=1200 CPUtime=0
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 170 0 0 0 0 0 0 0 18 0 1 0 250083762 1228800 154 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134775504 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 300 154 57 122 0 174 0

[startup+0.106922 s]
/proc/loadavg: 0.91 0.95 0.98 3/77 21272
/proc/meminfo: memFree=1812136/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=1332 CPUtime=0.1
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 210 0 0 0 10 0 0 0 18 0 1 0 250083762 1363968 194 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 333 194 59 122 0 207 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1332

[startup+0.514978 s]
/proc/loadavg: 0.91 0.95 0.98 3/77 21272
/proc/meminfo: memFree=1812136/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=1468 CPUtime=0.51
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 256 0 0 0 51 0 0 0 22 0 1 0 250083762 1503232 238 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134535353 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 367 238 67 122 0 241 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1468

[startup+1.3381 s]
/proc/loadavg: 0.91 0.95 0.98 2/78 21273
/proc/meminfo: memFree=1811232/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=1728 CPUtime=1.33
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 301 0 0 0 133 0 0 0 25 0 1 0 250083762 1769472 283 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134535293 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 432 283 67 122 0 306 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1728

[startup+2.97433 s]
/proc/loadavg: 0.91 0.95 0.98 2/78 21273
/proc/meminfo: memFree=1811040/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=1860 CPUtime=2.97
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 331 0 0 0 297 0 0 0 25 0 1 0 250083762 1904640 313 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519251 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 465 313 67 122 0 339 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 1860

[startup+6.2538 s]
/proc/loadavg: 0.92 0.95 0.98 2/78 21273
/proc/meminfo: memFree=1810720/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=1980 CPUtime=6.25
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 380 0 0 0 625 0 0 0 25 0 1 0 250083762 2027520 362 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519304 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 495 362 67 122 0 369 0
Current children cumulated CPU time (s) 6.25
Current children cumulated vsize (KiB) 1980

[startup+12.7067 s]
/proc/loadavg: 0.93 0.95 0.98 2/78 21273
/proc/meminfo: memFree=1810400/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2232 CPUtime=12.7
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 448 0 0 0 1270 0 0 0 25 0 1 0 250083762 2285568 430 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 558 430 67 122 0 432 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 2232

[startup+25.5076 s]
/proc/loadavg: 0.94 0.96 0.98 2/78 21273
/proc/meminfo: memFree=1810208/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2456 CPUtime=25.49
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 492 0 0 0 2549 0 0 0 25 0 1 0 250083762 2514944 474 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529698 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 614 474 67 122 0 488 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 2456

[startup+51.1172 s]
/proc/loadavg: 0.96 0.96 0.98 2/78 21273
/proc/meminfo: memFree=1809760/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2812 CPUtime=51.09
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 590 0 0 0 5109 0 0 0 25 0 1 0 250083762 2879488 572 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 703 572 67 122 0 577 0
Current children cumulated CPU time (s) 51.09
Current children cumulated vsize (KiB) 2812

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

[startup+52.4494 s]
/proc/loadavg: 0.96 0.96 0.98 2/78 21273
/proc/meminfo: memFree=1809760/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2812 CPUtime=52.42
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 592 0 0 0 5242 0 0 0 25 0 1 0 250083762 2879488 574 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529588 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 703 574 67 122 0 577 0
Current children cumulated CPU time (s) 52.42
Current children cumulated vsize (KiB) 2812

[startup+65.5623 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21299
/proc/meminfo: memFree=1808432/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2940 CPUtime=65.53
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 620 0 0 0 6553 0 0 0 25 0 1 0 250083762 3010560 602 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 735 602 67 122 0 609 0
Current children cumulated CPU time (s) 65.53
Current children cumulated vsize (KiB) 2940

[startup+68.8428 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21337
/proc/meminfo: memFree=1808368/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2940 CPUtime=68.8
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 620 0 0 0 6880 0 0 0 25 0 1 0 250083762 3010560 602 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 735 602 67 122 0 609 0
Current children cumulated CPU time (s) 68.8
Current children cumulated vsize (KiB) 2940

[startup+72.1162 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21339
/proc/meminfo: memFree=1808560/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2940 CPUtime=72.07
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 621 0 0 0 7207 0 0 0 25 0 1 0 250083762 3010560 603 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519587 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 735 603 67 122 0 609 0
Current children cumulated CPU time (s) 72.07
Current children cumulated vsize (KiB) 2940

[startup+73.7595 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21345
/proc/meminfo: memFree=1808432/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2940 CPUtime=73.71
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 623 0 0 0 7371 0 0 0 25 0 1 0 250083762 3010560 605 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519890 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 735 605 67 122 0 609 0
Current children cumulated CPU time (s) 73.71
Current children cumulated vsize (KiB) 2940

[startup+74.5796 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21345
/proc/meminfo: memFree=1808432/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=2940 CPUtime=74.53
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 629 0 0 0 7453 0 0 0 25 0 1 0 250083762 3010560 611 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530985 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 735 611 67 122 0 609 0
Current children cumulated CPU time (s) 74.53
Current children cumulated vsize (KiB) 2940

[startup+74.7836 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21345
/proc/meminfo: memFree=1808432/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=3044 CPUtime=74.73
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 631 0 0 0 7473 0 0 0 25 0 1 0 250083762 3117056 613 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530067 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 761 613 67 122 0 635 0
Current children cumulated CPU time (s) 74.73
Current children cumulated vsize (KiB) 3044

[startup+74.8856 s]
/proc/loadavg: 0.97 0.96 0.98 2/84 21345
/proc/meminfo: memFree=1808432/2055920 swapFree=4143328/4192956
[pid=21272] ppid=21270 vsize=3044 CPUtime=74.84
/proc/21272/stat : 21272 (mxc) R 21270 21272 20262 0 -1 4194304 631 0 0 0 7484 0 0 0 25 0 1 0 250083762 3117056 613 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134531117 0 0 4096 0 0 0 0 17 1 0 0
/proc/21272/statm: 761 613 67 122 0 635 0
Current children cumulated CPU time (s) 74.84
Current children cumulated vsize (KiB) 3044

Child status: 20
Real time (s): 74.9785
CPU time (s): 74.9256
CPU user time (s): 74.9196
CPU system time (s): 0.005999
CPU usage (%): 99.9295
Max. virtual memory (cumulated for all children) (KiB): 3044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 74.9196
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 632
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= 8
involuntary context switches= 1532

runsolver used 0.095985 second user time and 0.172973 second system time

The end

Launcher Data (download as text)

Begin job on node30 on Tue Feb 27 07:59:57 UTC 2007

IDJOB= 310946
IDBENCH= 20300
IDSOLVER= 107
FILE ID= node30/310946-1172563197

PBS_JOBID= 3971878

Free space on /tmp= 66559 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1230630010-06-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310946-1172563197/mxc /tmp/evaluation/310946-1172563197/instance-310946-1172563197.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node30/watcher-310946-1172563197 -o ROOT/results/node30/solver-310946-1172563197 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310946-1172563197/mxc /tmp/evaluation/310946-1172563197/instance-310946-1172563197.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  f1d2cd08ac7f8096a38662a7d7275db8

RANDOM SEED= 540964255

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node30.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		: 3000.270
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		: 3000.270
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:       1812544 kB
Buffers:         35616 kB
Cached:         133764 kB
SwapCached:      17280 kB
Active:         125816 kB
Inactive:        78404 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1812544 kB
SwapTotal:     4192956 kB
SwapFree:      4143328 kB
Dirty:             668 kB
Writeback:           0 kB
Mapped:          30252 kB
Slab:            24568 kB
Committed_AS:   741712 kB
PageTables:       1884 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= 66559 MiB

End job on node30 on Tue Feb 27 08:01:12 UTC 2007