Trace number 426896

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 15.4826 15.5018

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S1286605994-07-SAT.cnf
MD5SUMe4e9587cc33e3fc7e177d5d00533cb0d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark15.4826
Satisfiable
(Un)Satisfiability was proved
Number of variables3498
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)

15.39/15.49	c MXC attempting /tmp/evaluation/426896-1177830555/instance-426896-1177830555.cnf
15.39/15.49	c 0 assignments made, starting to guess now
15.39/15.49	c ===================================[MXC]=====================================
15.39/15.49	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
15.39/15.49	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
15.39/15.49	c =============================================================================
15.39/15.49	c |         0 |    6541    19623 |    2180       0       0     nan |  0.000 % |
15.39/15.49	c |       101 |    6541    19623 |    2398      98    1979    20.2 |  0.000 % |
15.39/15.49	c |       251 |    6541    19623 |    2637     247    5712    23.1 |  0.000 % |
15.39/15.49	c |       477 |    6541    19623 |    2901     470   11593    24.7 |  0.000 % |
15.39/15.49	c |       814 |    6541    19623 |    3191     806   20939    26.0 |  0.000 % |
15.39/15.49	c |      1322 |    6541    19623 |    3510    1312   37156    28.3 |  0.000 % |
15.39/15.49	c |      2082 |    6541    19623 |    3862    2069   57442    27.8 |  0.000 % |
15.39/15.49	c |      3221 |    6541    19623 |    4248    3205   86710    27.1 |  0.000 % |
15.39/15.49	c |      4931 |    6541    19623 |    4673    2785   80539    28.9 |  0.000 % |
15.39/15.49	c |      7496 |    6541    19623 |    5140    3011   80314    26.7 |  0.000 % |
15.39/15.49	c |     11341 |    6541    19623 |    5654    4285   99055    23.1 |  0.000 % |
15.39/15.49	c |     17108 |    6541    19623 |    6219    4397  118371    26.9 |  0.000 % |
15.39/15.49	c |     25757 |    6541    19623 |    6841    3718   93672    25.2 |  0.000 % |
15.39/15.49	c |     38731 |    6541    19623 |    7525    6431  186165    28.9 |  0.000 % |
15.39/15.49	c |     58193 |    6541    19623 |    8278    7083  204781    28.9 |  0.000 % |
15.39/15.49	c 15.480s elapsed
15.39/15.49	c restarts: 14
15.39/15.49	c decisions: 108319
15.39/15.49	c propagations: 29831278
15.39/15.49	c conflicts: 82639
15.39/15.49	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/node54/watcher-426896-1177830555 -o ROOT/results/node54/solver-426896-1177830555 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/426896-1177830555/mxc /tmp/evaluation/426896-1177830555/instance-426896-1177830555.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: 1.56 2.02 1.97 3/66 15995
/proc/meminfo: memFree=1400248/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=1516 CPUtime=0
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 236 0 0 0 0 0 0 0 18 0 1 0 230429970 1552384 221 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 379 222 46 122 0 253 0

[startup+0.104622 s]
/proc/loadavg: 1.56 2.02 1.97 3/66 15995
/proc/meminfo: memFree=1400248/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=1764 CPUtime=0.1
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 327 0 0 0 10 0 0 0 18 0 1 0 230429970 1806336 275 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530302 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 441 275 59 122 0 315 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1764

[startup+0.201634 s]
/proc/loadavg: 1.56 2.02 1.97 3/66 15995
/proc/meminfo: memFree=1400248/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=1896 CPUtime=0.19
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 358 0 0 0 19 0 0 0 18 0 1 0 230429970 1941504 306 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519284 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 474 306 59 122 0 348 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 1896

[startup+0.301647 s]
/proc/loadavg: 1.56 2.02 1.97 3/66 15995
/proc/meminfo: memFree=1400248/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=2028 CPUtime=0.29
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 389 0 0 0 29 0 0 0 19 0 1 0 230429970 2076672 337 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519564 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 507 337 59 122 0 381 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2028

[startup+0.701697 s]
/proc/loadavg: 1.56 2.02 1.97 3/66 15995
/proc/meminfo: memFree=1400248/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=2300 CPUtime=0.69
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 481 0 0 0 69 0 0 0 22 0 1 0 230429970 2355200 427 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 575 427 67 122 0 449 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2300

[startup+1.5018 s]
/proc/loadavg: 1.56 2.02 1.97 2/67 15996
/proc/meminfo: memFree=1398640/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=2432 CPUtime=1.49
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 524 0 0 0 149 0 0 0 25 0 1 0 230429970 2490368 470 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519284 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 608 470 67 122 0 482 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 2432

[startup+3.102 s]
/proc/loadavg: 1.56 2.02 1.97 2/67 15996
/proc/meminfo: memFree=1398384/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=2816 CPUtime=3.09
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 597 0 0 0 309 0 0 0 25 0 1 0 230429970 2883584 543 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519206 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 704 543 67 122 0 578 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2816

[startup+6.30141 s]
/proc/loadavg: 1.51 2.00 1.96 2/67 15996
/proc/meminfo: memFree=1397744/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=3184 CPUtime=6.29
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 691 0 0 0 629 0 0 0 25 0 1 0 230429970 3260416 637 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 796 637 67 122 0 670 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 3184

[startup+12.7012 s]
/proc/loadavg: 1.47 1.99 1.96 2/67 15996
/proc/meminfo: memFree=1397040/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=3872 CPUtime=12.69
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 881 0 0 0 1269 0 0 0 25 0 1 0 230429970 3964928 827 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 968 827 67 122 0 842 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 3872

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

[startup+12.8022 s]
/proc/loadavg: 1.47 1.99 1.96 2/67 15996
/proc/meminfo: memFree=1397040/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=3872 CPUtime=12.79
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 881 0 0 0 1279 0 0 0 25 0 1 0 230429970 3964928 827 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 968 827 67 122 0 842 0
Current children cumulated CPU time (s) 12.79
Current children cumulated vsize (KiB) 3872

[startup+14.4054 s]
/proc/loadavg: 1.43 1.97 1.95 2/67 15996
/proc/meminfo: memFree=1396912/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=4004 CPUtime=14.39
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 896 0 0 0 1439 0 0 0 25 0 1 0 230429970 4100096 842 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519200 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 1001 842 67 122 0 875 0
Current children cumulated CPU time (s) 14.39
Current children cumulated vsize (KiB) 4004

[startup+15.2015 s]
/proc/loadavg: 1.43 1.97 1.95 2/67 15996
/proc/meminfo: memFree=1396912/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=4004 CPUtime=15.19
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 896 0 0 0 1519 0 0 0 25 0 1 0 230429970 4100096 842 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519635 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 1001 842 67 122 0 875 0
Current children cumulated CPU time (s) 15.19
Current children cumulated vsize (KiB) 4004

[startup+15.4016 s]
/proc/loadavg: 1.43 1.97 1.95 2/67 15996
/proc/meminfo: memFree=1396912/2055920 swapFree=4182164/4192956
[pid=15995] ppid=15993 vsize=4004 CPUtime=15.39
/proc/15995/stat : 15995 (mxc) R 15993 15995 15941 0 -1 4194304 896 0 0 0 1539 0 0 0 25 0 1 0 230429970 4100096 842 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134529588 0 0 4096 0 0 0 0 17 1 0 0
/proc/15995/statm: 1001 842 67 122 0 875 0
Current children cumulated CPU time (s) 15.39
Current children cumulated vsize (KiB) 4004

Child status: 10
Real time (s): 15.5018
CPU time (s): 15.4826
CPU user time (s): 15.4796
CPU system time (s): 0.002999
CPU usage (%): 99.8762
Max. virtual memory (cumulated for all children) (KiB): 4004

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 15.4796
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= 898
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= 27

runsolver used 0.014997 second user time and 0.048992 second system time

The end

Launcher Data (download as text)

Begin job on node54 on Sun Apr 29 07:09:15 UTC 2007

IDJOB= 426896
IDBENCH= 20225
IDSOLVER= 174
FILE ID= node54/426896-1177830555

PBS_JOBID= 4718293

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-S1286605994-07-SAT.cnf
COMMAND LINE= /tmp/evaluation/426896-1177830555/mxc /tmp/evaluation/426896-1177830555/instance-426896-1177830555.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node54/watcher-426896-1177830555 -o ROOT/results/node54/solver-426896-1177830555 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/426896-1177830555/mxc /tmp/evaluation/426896-1177830555/instance-426896-1177830555.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  e4e9587cc33e3fc7e177d5d00533cb0d

RANDOM SEED= 723890010

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node54.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:       1400592 kB
Buffers:         56676 kB
Cached:         515156 kB
SwapCached:       4128 kB
Active:         279240 kB
Inactive:       302312 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1400592 kB
SwapTotal:     4192956 kB
SwapFree:      4182164 kB
Dirty:             912 kB
Writeback:           0 kB
Mapped:          15628 kB
Slab:            59636 kB
Committed_AS:  2375212 kB
PageTables:       1412 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 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 node54 on Sun Apr 29 07:09:31 UTC 2007