Trace number 311028

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 34.7367 34.7602

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1239472001-19-UNSAT.cnf
MD5SUM914d3e80d7a891b747d01777ed9ce8d7
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark7.2419
Satisfiable
(Un)Satisfiability was proved
Number of variables1294
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)

34.70/34.75	c MXC attempting /tmp/evaluation/311028-1172564001/instance-311028-1172564001.cnf
34.70/34.75	c 0 assignments made, starting to guess now
34.70/34.75	c ===================================[MXC]=====================================
34.70/34.75	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
34.70/34.75	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
34.70/34.75	c =============================================================================
34.70/34.75	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
34.70/34.75	c |       100 |    3221     9663 |    1180      99    1518    15.3 |  0.000 % |
34.70/34.75	c |       251 |    3221     9663 |    1298     250    4426    17.7 |  0.000 % |
34.70/34.75	c |       478 |    3211     9633 |    1428     476    8043    16.9 |  0.077 % |
34.70/34.75	c |       817 |    3211     9633 |    1570     813   14062    17.3 |  0.077 % |
34.70/34.75	c |      1323 |    3211     9633 |    1728    1319   23016    17.4 |  0.077 % |
34.70/34.75	c |      2083 |    3211     9633 |    1900    1214   20287    16.7 |  0.077 % |
34.70/34.75	c |      3222 |    3211     9633 |    2090    1401   24193    17.3 |  0.077 % |
34.70/34.75	c |      4931 |    3211     9633 |    2300    2063   36704    17.8 |  0.077 % |
34.70/34.75	c |      7493 |    3211     9633 |    2530    1170   20894    17.9 |  0.077 % |
34.70/34.75	c |     11337 |    3211     9633 |    2783    2479   42277    17.1 |  0.077 % |
34.70/34.75	c |     17104 |    3211     9633 |    3061    2677   44692    16.7 |  0.077 % |
34.70/34.75	c |     25753 |    3211     9633 |    3367    2145   32509    15.2 |  0.077 % |
34.70/34.75	c |     38728 |    3211     9633 |    3704    3342   57691    17.3 |  0.077 % |
34.70/34.75	c |     58189 |    3211     9633 |    4074    2430   45030    18.5 |  0.077 % |
34.70/34.75	c |     87382 |    3211     9633 |    4482    3109   52590    16.9 |  0.077 % |
34.70/34.75	c |    131171 |    3211     9633 |    4930    4356   73728    16.9 |  0.077 % |
34.70/34.75	c |    196855 |    3211     9633 |    5423    3515   65154    18.5 |  0.077 % |
34.70/34.75	c |    295381 |    3157     9471 |    5965    4426   74426    16.8 |  0.618 % |
34.70/34.75	c 34.730s elapsed
34.70/34.75	c restarts: 18
34.70/34.75	c decisions: 449933
34.70/34.75	c propagations: 61588387
34.70/34.75	c conflicts: 366850
34.70/34.75	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/node77/watcher-311028-1172564001 -o ROOT/results/node77/solver-311028-1172564001 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/311028-1172564001/mxc /tmp/evaluation/311028-1172564001/instance-311028-1172564001.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 0.97 0.99 3/67 8341
/proc/meminfo: memFree=1832376/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=1200 CPUtime=0
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 169 0 0 0 0 0 0 0 20 0 1 0 51267678 1228800 154 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519927 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 300 154 57 122 0 174 0

[startup+0.106396 s]
/proc/loadavg: 0.91 0.97 0.99 3/67 8341
/proc/meminfo: memFree=1832376/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=1332 CPUtime=0.1
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 208 0 0 0 10 0 0 0 21 0 1 0 51267678 1363968 193 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134534137 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 333 193 59 122 0 207 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1332

[startup+0.514443 s]
/proc/loadavg: 0.91 0.97 0.99 3/67 8341
/proc/meminfo: memFree=1832376/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=1472 CPUtime=0.51
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 260 0 0 0 51 0 0 0 25 0 1 0 51267678 1507328 243 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134528104 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 368 243 67 122 0 242 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1472

[startup+1.33454 s]
/proc/loadavg: 0.91 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1831536/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=1604 CPUtime=1.33
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 290 0 0 0 133 0 0 0 25 0 1 0 51267678 1642496 273 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 401 273 67 122 0 275 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1604

[startup+2.97073 s]
/proc/loadavg: 0.91 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1831280/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=1724 CPUtime=2.96
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 323 0 0 0 296 0 0 0 25 0 1 0 51267678 1765376 306 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530055 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 431 306 67 122 0 305 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1724

[startup+6.25012 s]
/proc/loadavg: 0.92 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1831024/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=1988 CPUtime=6.24
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 380 0 0 0 624 0 0 0 25 0 1 0 51267678 2035712 363 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 497 363 67 122 0 371 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1988

[startup+12.6999 s]
/proc/loadavg: 0.93 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830784/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2212 CPUtime=12.69
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 421 0 0 0 1269 0 0 0 25 0 1 0 51267678 2265088 404 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519319 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 553 404 67 122 0 427 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2212

[startup+25.5024 s]
/proc/loadavg: 0.94 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830464/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2432 CPUtime=25.49
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 496 0 0 0 2549 0 0 0 25 0 1 0 51267678 2490368 479 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529763 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 608 479 67 122 0 482 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 2432

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

[startup+26.2205 s]
/proc/loadavg: 0.94 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830464/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2432 CPUtime=26.21
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 496 0 0 0 2621 0 0 0 25 0 1 0 51267678 2490368 479 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529981 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 608 479 67 122 0 482 0
Current children cumulated CPU time (s) 26.21
Current children cumulated vsize (KiB) 2432

[startup+29.4969 s]
/proc/loadavg: 0.94 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830400/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2564 CPUtime=29.48
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 511 0 0 0 2948 0 0 0 25 0 1 0 51267678 2625536 494 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 641 494 67 122 0 515 0
Current children cumulated CPU time (s) 29.48
Current children cumulated vsize (KiB) 2564

[startup+32.7753 s]
/proc/loadavg: 0.95 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830336/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2564 CPUtime=32.76
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 523 0 0 0 3276 0 0 0 25 0 1 0 51267678 2625536 506 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519981 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 641 506 67 122 0 515 0
Current children cumulated CPU time (s) 32.76
Current children cumulated vsize (KiB) 2564

[startup+33.5914 s]
/proc/loadavg: 0.95 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830336/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2564 CPUtime=33.57
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 523 0 0 0 3357 0 0 0 25 0 1 0 51267678 2625536 506 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519981 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 641 506 67 122 0 515 0
Current children cumulated CPU time (s) 33.57
Current children cumulated vsize (KiB) 2564

[startup+34.4115 s]
/proc/loadavg: 0.95 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830336/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2564 CPUtime=34.39
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 523 0 0 0 3439 0 0 0 25 0 1 0 51267678 2625536 506 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519975 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 641 506 67 122 0 515 0
Current children cumulated CPU time (s) 34.39
Current children cumulated vsize (KiB) 2564

[startup+34.6155 s]
/proc/loadavg: 0.95 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830336/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2564 CPUtime=34.6
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 523 0 0 0 3460 0 0 0 25 0 1 0 51267678 2625536 506 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134531206 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 641 506 67 122 0 515 0
Current children cumulated CPU time (s) 34.6
Current children cumulated vsize (KiB) 2564

[startup+34.7175 s]
/proc/loadavg: 0.95 0.97 0.99 2/68 8342
/proc/meminfo: memFree=1830336/2055892 swapFree=4086192/4096564
[pid=8341] ppid=8339 vsize=2564 CPUtime=34.7
/proc/8341/stat : 8341 (mxc) R 8339 8341 7192 0 -1 4194304 524 0 0 0 3470 0 0 0 25 0 1 0 51267678 2625536 507 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/8341/statm: 641 507 67 122 0 515 0
Current children cumulated CPU time (s) 34.7
Current children cumulated vsize (KiB) 2564

Child status: 20
Real time (s): 34.7602
CPU time (s): 34.7367
CPU user time (s): 34.7337
CPU system time (s): 0.002999
CPU usage (%): 99.9325
Max. virtual memory (cumulated for all children) (KiB): 2564

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 34.7337
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= 525
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= 52

runsolver used 0.026995 second user time and 0.072988 second system time

The end

Launcher Data (download as text)

Begin job on node77 on Tue Feb 27 08:13:21 UTC 2007

IDJOB= 311028
IDBENCH= 20303
IDSOLVER= 107
FILE ID= node77/311028-1172564001

PBS_JOBID= 3971876

Free space on /tmp= 66649 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1239472001-19-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/311028-1172564001/mxc /tmp/evaluation/311028-1172564001/instance-311028-1172564001.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node77/watcher-311028-1172564001 -o ROOT/results/node77/solver-311028-1172564001 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/311028-1172564001/mxc /tmp/evaluation/311028-1172564001/instance-311028-1172564001.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  914d3e80d7a891b747d01777ed9ce8d7

RANDOM SEED= 850448491

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node77.alineos.net 2.6.9-34.ELsmp #1 SMP Thu Mar 9 06:23:23 GMT 2006 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		: 3000.239
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	: 6006.15
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		: 3000.239
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	: 5999.41
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055892 kB
MemFree:       1832784 kB
Buffers:         28788 kB
Cached:         149464 kB
SwapCached:       4056 kB
Active:          82292 kB
Inactive:       106128 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055892 kB
LowFree:       1832784 kB
SwapTotal:     4096564 kB
SwapFree:      4086192 kB
Dirty:             648 kB
Writeback:           0 kB
Mapped:          15356 kB
Slab:            21184 kB
Committed_AS:   116412 kB
PageTables:       1428 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66649 MiB

End job on node77 on Tue Feb 27 08:13:56 UTC 2007