Trace number 427047

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 74.9146 74.95

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 benchmark16.9984
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)

74.87/74.94	c MXC attempting /tmp/evaluation/427047-1177831576/instance-427047-1177831576.cnf
74.87/74.94	c 0 assignments made, starting to guess now
74.87/74.94	c ===================================[MXC]=====================================
74.87/74.94	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
74.87/74.94	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
74.87/74.94	c =============================================================================
74.87/74.94	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
74.87/74.94	c |       100 |    3221     9663 |    1180      99    1751    17.7 |  0.000 % |
74.87/74.94	c |       250 |    3221     9663 |    1298     245    4267    17.4 |  0.000 % |
74.87/74.94	c |       478 |    3221     9663 |    1428     473    8119    17.2 |  0.000 % |
74.87/74.94	c |       815 |    3221     9663 |    1570     809   15529    19.2 |  0.000 % |
74.87/74.94	c |      1321 |    3221     9663 |    1728    1311   26575    20.3 |  0.000 % |
74.87/74.94	c |      2080 |    3221     9663 |    1900    1203   22936    19.1 |  0.000 % |
74.87/74.94	c |      3219 |    3221     9663 |    2090    1389   24104    17.4 |  0.000 % |
74.87/74.94	c |      4928 |    3221     9663 |    2300    2052   35854    17.5 |  0.000 % |
74.87/74.94	c |      7490 |    3221     9663 |    2530    1164   21313    18.3 |  0.000 % |
74.87/74.94	c |     11336 |    3221     9663 |    2783    2480   57556    23.2 |  0.000 % |
74.87/74.94	c |     17102 |    3221     9663 |    3061    2680   53143    19.8 |  0.000 % |
74.87/74.94	c |     25751 |    3221     9663 |    3367    2144   47592    22.2 |  0.000 % |
74.87/74.94	c |     38725 |    3221     9663 |    3704    3336   78611    23.6 |  0.000 % |
74.87/74.94	c |     58186 |    3221     9663 |    4074    2430   47905    19.7 |  0.000 % |
74.87/74.94	c |     87382 |    3221     9663 |    4482    3125   61946    19.8 |  0.000 % |
74.87/74.94	c |    131171 |    3221     9663 |    4930    4361   96734    22.2 |  0.000 % |
74.87/74.94	c |    196856 |    3221     9663 |    5423    3549   72070    20.3 |  0.000 % |
74.87/74.94	c |    295383 |    3221     9663 |    5965    4523   91178    20.2 |  0.000 % |
74.87/74.94	c |    443173 |    3188     9564 |    6562    3206   63141    19.7 |  0.232 % |
74.87/74.94	c |    664856 |    3176     9528 |    7218    5159   83299    16.1 |  0.309 % |
74.87/74.94	c 74.910s elapsed
74.87/74.94	c restarts: 20
74.87/74.94	c decisions: 854139
74.87/74.94	c propagations: 117320642
74.87/74.94	c conflicts: 698480
74.87/74.94	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node44/watcher-427047-1177831576 -o ROOT/results/node44/solver-427047-1177831576 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/427047-1177831576/mxc /tmp/evaluation/427047-1177831576/instance-427047-1177831576.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): 7500 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: 0.87 0.98 0.99 3/77 30171
/proc/meminfo: memFree=1713784/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1200 CPUtime=0
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 169 0 0 0 0 0 0 0 18 0 1 0 231069305 1228800 154 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519610 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 300 154 57 122 0 174 0

[startup+0.00846594 s]
/proc/loadavg: 0.87 0.98 0.99 3/77 30171
/proc/meminfo: memFree=1713784/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1200 CPUtime=0
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 169 0 0 0 0 0 0 0 18 0 1 0 231069305 1228800 154 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134534099 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 300 154 57 122 0 174 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 1200

[startup+0.101475 s]
/proc/loadavg: 0.87 0.98 0.99 3/77 30171
/proc/meminfo: memFree=1713784/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1332 CPUtime=0.09
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 206 0 0 0 9 0 0 0 18 0 1 0 231069305 1363968 191 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134528512 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 333 191 59 122 0 207 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1332

[startup+0.301494 s]
/proc/loadavg: 0.87 0.98 0.99 3/77 30171
/proc/meminfo: memFree=1713784/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1468 CPUtime=0.29
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 244 0 0 0 29 0 0 0 19 0 1 0 231069305 1503232 227 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 367 227 67 122 0 241 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1468

[startup+0.701536 s]
/proc/loadavg: 0.87 0.98 0.99 3/77 30171
/proc/meminfo: memFree=1713784/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1596 CPUtime=0.69
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 270 0 0 0 69 0 0 0 23 0 1 0 231069305 1634304 253 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530184 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 399 254 67 122 0 273 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1596

[startup+1.50162 s]
/proc/loadavg: 0.87 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1713008/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1728 CPUtime=1.49
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 303 0 0 0 149 0 0 0 25 0 1 0 231069305 1769472 286 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519587 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 432 286 67 122 0 306 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1728

[startup+3.10178 s]
/proc/loadavg: 0.87 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1712752/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1860 CPUtime=3.09
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 331 0 0 0 309 0 0 0 25 0 1 0 231069305 1904640 314 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134531179 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 465 314 67 122 0 339 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1860

[startup+6.30111 s]
/proc/loadavg: 0.88 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1712496/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=1980 CPUtime=6.29
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 379 0 0 0 629 0 0 0 25 0 1 0 231069305 2027520 362 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519610 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 495 362 67 122 0 369 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1980

[startup+12.7018 s]
/proc/loadavg: 0.89 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1712240/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2232 CPUtime=12.69
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 447 0 0 0 1269 0 0 0 25 0 1 0 231069305 2285568 430 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519249 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 558 430 67 122 0 432 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2232

[startup+25.5011 s]
/proc/loadavg: 0.91 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1712048/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2456 CPUtime=25.48
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 491 0 0 0 2548 0 0 0 25 0 1 0 231069305 2514944 474 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530048 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 614 474 67 122 0 488 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 2456

[startup+51.1017 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711664/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2812 CPUtime=51.07
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 589 0 0 0 5107 0 0 0 25 0 1 0 231069305 2879488 572 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530738 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 703 572 67 122 0 577 0
Current children cumulated CPU time (s) 51.07
Current children cumulated vsize (KiB) 2812

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

[startup+63.901 s]
/proc/loadavg: 0.95 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711536/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2940 CPUtime=63.87
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 619 0 0 0 6387 0 0 0 25 0 1 0 231069305 3010560 602 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 735 602 67 122 0 609 0
Current children cumulated CPU time (s) 63.87
Current children cumulated vsize (KiB) 2940

[startup+70.3017 s]
/proc/loadavg: 0.96 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711600/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2940 CPUtime=70.27
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 619 0 0 0 7027 0 0 0 25 0 1 0 231069305 3010560 602 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519229 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 735 602 67 122 0 609 0
Current children cumulated CPU time (s) 70.27
Current children cumulated vsize (KiB) 2940

[startup+73.502 s]
/proc/loadavg: 0.96 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711600/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2940 CPUtime=73.47
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 622 0 0 0 7347 0 0 0 25 0 1 0 231069305 3010560 605 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519327 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 735 605 67 122 0 609 0
Current children cumulated CPU time (s) 73.47
Current children cumulated vsize (KiB) 2940

[startup+74.3011 s]
/proc/loadavg: 0.96 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711600/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=2940 CPUtime=74.27
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 627 0 0 0 7427 0 0 0 25 0 1 0 231069305 3010560 610 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134517583 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 735 610 67 122 0 609 0
Current children cumulated CPU time (s) 74.27
Current children cumulated vsize (KiB) 2940

[startup+74.7011 s]
/proc/loadavg: 0.96 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711600/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=3044 CPUtime=74.67
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 630 0 0 0 7467 0 0 0 25 0 1 0 231069305 3117056 613 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519951 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 761 613 67 122 0 635 0
Current children cumulated CPU time (s) 74.67
Current children cumulated vsize (KiB) 3044

[startup+74.9012 s]
/proc/loadavg: 0.96 0.98 0.99 2/78 30172
/proc/meminfo: memFree=1711600/2055920 swapFree=4156164/4192956
[pid=30171] ppid=30169 vsize=3044 CPUtime=74.87
/proc/30171/stat : 30171 (mxc) R 30169 30171 29274 0 -1 4194304 630 0 0 0 7487 0 0 0 25 0 1 0 231069305 3117056 613 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134531167 0 0 4096 0 0 0 0 17 1 0 0
/proc/30171/statm: 761 613 67 122 0 635 0
Current children cumulated CPU time (s) 74.87
Current children cumulated vsize (KiB) 3044

Child status: 20
Real time (s): 74.95
CPU time (s): 74.9146
CPU user time (s): 74.9056
CPU system time (s): 0.008998
CPU usage (%): 99.9528
Max. virtual memory (cumulated for all children) (KiB): 3044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 74.9056
system time used= 0.008998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 631
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= 1636

runsolver used 0.069989 second user time and 0.151976 second system time

The end

Launcher Data (download as text)

Begin job on node44 on Sun Apr 29 07:26:16 UTC 2007

IDJOB= 427047
IDBENCH= 20300
IDSOLVER= 174
FILE ID= node44/427047-1177831576

PBS_JOBID= 4718247

Free space on /tmp= 66564 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/427047-1177831576/mxc /tmp/evaluation/427047-1177831576/instance-427047-1177831576.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node44/watcher-427047-1177831576 -o ROOT/results/node44/solver-427047-1177831576 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/427047-1177831576/mxc /tmp/evaluation/427047-1177831576/instance-427047-1177831576.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  f1d2cd08ac7f8096a38662a7d7275db8

RANDOM SEED= 52319335

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node44.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		: 3000.234
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		: 3000.234
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:       1714320 kB
Buffers:         46576 kB
Cached:         200500 kB
SwapCached:      14044 kB
Active:         170632 kB
Inactive:       101088 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1714320 kB
SwapTotal:     4192956 kB
SwapFree:      4156164 kB
Dirty:             836 kB
Writeback:           0 kB
Mapped:          32752 kB
Slab:            55384 kB
Committed_AS:  1524860 kB
PageTables:       1736 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= 66564 MiB

End job on node44 on Sun Apr 29 07:27:31 UTC 2007