Trace number 426870

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 2.70359 2.71897

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S1671384215-01-SAT.cnf
MD5SUMb44330819e18ebafb103a47668b9fb76
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark2.70359
Satisfiable
(Un)Satisfiability was proved
Number of variables3499
Number of clauses9344
Sum of the clauses size25229
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22803
Number of clauses of size 36541
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

2.69/2.71	c MXC attempting /tmp/evaluation/426870-1177830344/instance-426870-1177830344.cnf
2.69/2.71	c 0 assignments made, starting to guess now
2.69/2.71	c ===================================[MXC]=====================================
2.69/2.71	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
2.69/2.71	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
2.69/2.71	c =============================================================================
2.69/2.71	c |         0 |    6541    19623 |    2180       0       0     nan |  0.000 % |
2.69/2.71	c |       101 |    6541    19623 |    2398      99    1978    20.0 |  0.000 % |
2.69/2.71	c |       251 |    6541    19623 |    2637     248    4895    19.7 |  0.000 % |
2.69/2.71	c |       476 |    6515    19545 |    2901     464    9312    20.1 |  0.114 % |
2.69/2.71	c |       814 |    6515    19545 |    3191     801   17552    21.9 |  0.114 % |
2.69/2.71	c |      1320 |    6515    19545 |    3510    1306   30753    23.5 |  0.114 % |
2.69/2.71	c |      2079 |    6515    19545 |    3862    2063   47405    23.0 |  0.114 % |
2.69/2.71	c |      3220 |    6515    19545 |    4248    3201   68167    21.3 |  0.114 % |
2.69/2.71	c |      4928 |    6515    19545 |    4673    2780   54496    19.6 |  0.114 % |
2.69/2.71	c |      7491 |    6509    19527 |    5140    3003   53172    17.7 |  0.143 % |
2.69/2.71	c |     11336 |    6509    19527 |    5654    4276   88586    20.7 |  0.143 % |
2.69/2.71	c 2.700s elapsed
2.69/2.71	c restarts: 10
2.69/2.71	c decisions: 22358
2.69/2.71	c propagations: 6611657
2.69/2.71	c conflicts: 16919
2.69/2.71	s SATISFIABLE
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Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node25/watcher-426870-1177830344 -o ROOT/results/node25/solver-426870-1177830344 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/426870-1177830344/mxc /tmp/evaluation/426870-1177830344/instance-426870-1177830344.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: 0.98 0.97 0.99 3/64 10196
/proc/meminfo: memFree=1674016/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=1516 CPUtime=0
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 233 0 0 0 0 0 0 0 18 0 1 0 230951486 1552384 218 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134691428 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 379 218 46 122 0 253 0

[startup+0.0387669 s]
/proc/loadavg: 0.98 0.97 0.99 3/64 10196
/proc/meminfo: memFree=1674016/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=1632 CPUtime=0.03
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 304 0 0 0 3 0 0 0 18 0 1 0 230951486 1671168 252 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134520563 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 408 252 59 122 0 282 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1632

[startup+0.101777 s]
/proc/loadavg: 0.98 0.97 0.99 3/64 10196
/proc/meminfo: memFree=1674016/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=1764 CPUtime=0.09
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 322 0 0 0 9 0 0 0 18 0 1 0 230951486 1806336 270 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 441 270 59 122 0 315 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1764

[startup+0.30181 s]
/proc/loadavg: 0.98 0.97 0.99 3/64 10196
/proc/meminfo: memFree=1674016/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=1896 CPUtime=0.29
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 371 0 0 0 29 0 0 0 19 0 1 0 230951486 1941504 319 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134535061 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 474 319 59 122 0 348 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1896

[startup+0.701879 s]
/proc/loadavg: 0.98 0.97 0.99 3/64 10196
/proc/meminfo: memFree=1674016/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=2168 CPUtime=0.69
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 453 0 0 0 69 0 0 0 22 0 1 0 230951486 2220032 399 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519564 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 542 399 67 122 0 416 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2168

[startup+1.50302 s]
/proc/loadavg: 0.98 0.97 0.99 2/65 10197
/proc/meminfo: memFree=1672600/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=2300 CPUtime=1.5
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 489 0 0 0 150 0 0 0 25 0 1 0 230951486 2355200 435 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519243 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 575 435 67 122 0 449 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 2300

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

[startup+2.30115 s]
/proc/loadavg: 0.98 0.97 0.99 2/65 10197
/proc/meminfo: memFree=1672280/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=2432 CPUtime=2.29
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 512 0 0 0 229 0 0 0 25 0 1 0 230951486 2490368 458 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519587 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 608 458 67 122 0 482 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 2432

[startup+2.70122 s]
/proc/loadavg: 0.98 0.97 0.99 2/65 10197
/proc/meminfo: memFree=1672280/2055920 swapFree=4182908/4192956
[pid=10196] ppid=10194 vsize=2432 CPUtime=2.69
/proc/10196/stat : 10196 (mxc) R 10194 10196 9199 0 -1 4194304 515 0 0 0 269 0 0 0 25 0 1 0 230951486 2490368 461 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519651 0 0 4096 0 0 0 0 17 1 0 0
/proc/10196/statm: 608 461 67 122 0 482 0
Current children cumulated CPU time (s) 2.69
Current children cumulated vsize (KiB) 2432

Child status: 10
Real time (s): 2.71897
CPU time (s): 2.70359
CPU user time (s): 2.70259
CPU system time (s): 0.000999
CPU usage (%): 99.4341
Max. virtual memory (cumulated for all children) (KiB): 2432

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.70259
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 517
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= 9
involuntary context switches= 7

runsolver used 0.005999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node25 on Sun Apr 29 07:05:44 UTC 2007

IDJOB= 426870
IDBENCH= 20218
IDSOLVER= 174
FILE ID= node25/426870-1177830344

PBS_JOBID= 4718268

Free space on /tmp= 66564 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v3500/unif2p-p0.7-v3500-c9345-S1671384215-01-SAT.cnf
COMMAND LINE= /tmp/evaluation/426870-1177830344/mxc /tmp/evaluation/426870-1177830344/instance-426870-1177830344.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node25/watcher-426870-1177830344 -o ROOT/results/node25/solver-426870-1177830344 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/426870-1177830344/mxc /tmp/evaluation/426870-1177830344/instance-426870-1177830344.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  b44330819e18ebafb103a47668b9fb76

RANDOM SEED= 722362705

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node25.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		: 3000.261
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		: 3000.261
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:       1674424 kB
Buffers:         43108 kB
Cached:         279276 kB
SwapCached:       4220 kB
Active:         189052 kB
Inactive:       144180 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1674424 kB
SwapTotal:     4192956 kB
SwapFree:      4182908 kB
Dirty:             868 kB
Writeback:           0 kB
Mapped:          16592 kB
Slab:            34264 kB
Committed_AS:  4281576 kB
PageTables:       1476 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 node25 on Sun Apr 29 07:05:47 UTC 2007