Trace number 426875

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 50.2424 50.2693

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S1377128774-12-UNSAT.cnf
MD5SUMcc733e9a0d26b1e09913a40f9eba8e3c
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark30.0934
Satisfiable
(Un)Satisfiability was proved
Number of variables3500
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)

50.18/50.26	c MXC attempting /tmp/evaluation/426875-1177830385/instance-426875-1177830385.cnf
50.18/50.26	c 0 assignments made, starting to guess now
50.18/50.26	c ===================================[MXC]=====================================
50.18/50.26	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
50.18/50.26	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
50.18/50.26	c =============================================================================
50.18/50.26	c |         0 |    6541    19623 |    2180       0       0     nan |  0.000 % |
50.18/50.26	c |       100 |    6541    19623 |    2398      99    1768    17.9 |  0.000 % |
50.18/50.26	c |       250 |    6538    19614 |    2637     244    5114    21.0 |  0.029 % |
50.18/50.26	c |       476 |    6538    19614 |    2901     468    8442    18.0 |  0.029 % |
50.18/50.26	c |       813 |    6538    19614 |    3191     804   16073    20.0 |  0.029 % |
50.18/50.26	c |      1319 |    6538    19614 |    3510    1307   25278    19.3 |  0.029 % |
50.18/50.26	c |      2079 |    6538    19614 |    3862    2064   41734    20.2 |  0.029 % |
50.18/50.26	c |      3218 |    6538    19614 |    4248    3201   63707    19.9 |  0.029 % |
50.18/50.26	c |      4926 |    6538    19614 |    4673    2781   59014    21.2 |  0.029 % |
50.18/50.26	c |      7488 |    6538    19614 |    5140    3002   71673    23.9 |  0.029 % |
50.18/50.26	c |     11333 |    6538    19614 |    5654    4273  104554    24.5 |  0.029 % |
50.18/50.26	c |     17101 |    6538    19614 |    6219    4383   87432    19.9 |  0.029 % |
50.18/50.26	c |     25750 |    6538    19614 |    6841    3701   78763    21.3 |  0.029 % |
50.18/50.26	c |     38724 |    6476    19428 |    7525    6347  141740    22.3 |  0.371 % |
50.18/50.26	c |     58187 |    6476    19428 |    8278    6998  146114    20.9 |  0.371 % |
50.18/50.26	c |     87380 |    6476    19428 |    9106    7223  184437    25.5 |  0.371 % |
50.18/50.26	c |    131169 |    6444    19332 |   10017    5485  148841    27.1 |  0.629 % |
50.18/50.26	c |    196854 |    6241    18723 |   11018    5963  118716    19.9 |  1.714 % |
50.18/50.26	c 50.240s elapsed
50.18/50.26	c restarts: 17
50.18/50.26	c decisions: 328994
50.18/50.26	c propagations: 95195497
50.18/50.26	c conflicts: 259534
50.18/50.26	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/node15/watcher-426875-1177830385 -o ROOT/results/node15/solver-426875-1177830385 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/426875-1177830385/mxc /tmp/evaluation/426875-1177830385/instance-426875-1177830385.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: 0.99 0.97 0.98 3/77 18210
/proc/meminfo: memFree=1471664/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=1516 CPUtime=0
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 233 0 0 0 0 0 0 0 18 0 1 0 230956138 1552384 218 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134691428 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 379 218 46 122 0 253 0

[startup+0.0987141 s]
/proc/loadavg: 0.99 0.97 0.98 3/77 18210
/proc/meminfo: memFree=1471664/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=1764 CPUtime=0.09
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 319 0 0 0 9 0 0 0 18 0 1 0 230956138 1806336 267 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530055 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 441 267 59 122 0 315 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1764

[startup+0.101714 s]
/proc/loadavg: 0.99 0.97 0.98 3/77 18210
/proc/meminfo: memFree=1471664/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=1764 CPUtime=0.09
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 320 0 0 0 9 0 0 0 18 0 1 0 230956138 1806336 268 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519627 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 441 268 59 122 0 315 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1764

[startup+0.301733 s]
/proc/loadavg: 0.99 0.97 0.98 3/77 18210
/proc/meminfo: memFree=1471664/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=1896 CPUtime=0.29
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 370 0 0 0 29 0 0 0 19 0 1 0 230956138 1941504 318 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519564 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 474 318 59 122 0 348 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1896

[startup+0.70177 s]
/proc/loadavg: 0.99 0.97 0.98 3/77 18210
/proc/meminfo: memFree=1471664/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=2168 CPUtime=0.69
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 452 0 0 0 69 0 0 0 22 0 1 0 230956138 2220032 398 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134528439 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 542 398 67 122 0 416 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2168

[startup+1.50184 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1470184/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=2432 CPUtime=1.49
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 516 0 0 0 149 0 0 0 25 0 1 0 230956138 2490368 462 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 608 462 67 122 0 482 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 2432

[startup+3.10199 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1469864/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=2564 CPUtime=3.09
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 547 0 0 0 309 0 0 0 25 0 1 0 230956138 2625536 493 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530841 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 641 493 67 122 0 515 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2564

[startup+6.30128 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1469488/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=2828 CPUtime=6.29
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 610 0 0 0 629 0 0 0 25 0 1 0 230956138 2895872 556 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 707 556 67 122 0 581 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2828

[startup+12.7019 s]
/proc/loadavg: 0.99 0.97 0.98 3/78 18211
/proc/meminfo: memFree=1468976/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=3220 CPUtime=12.68
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 715 0 0 0 1268 0 0 0 25 0 1 0 230956138 3297280 661 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134531445 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 805 661 67 122 0 679 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 3220

[startup+25.501 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468400/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=3836 CPUtime=25.48
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 850 0 0 0 2548 0 0 0 25 0 1 0 230956138 3928064 796 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134529591 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 959 796 67 122 0 833 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 3836

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

[startup+38.3012 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468400/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=3836 CPUtime=38.28
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 873 0 0 0 3828 0 0 0 25 0 1 0 230956138 3928064 819 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 959 819 67 122 0 833 0
Current children cumulated CPU time (s) 38.28
Current children cumulated vsize (KiB) 3836

[startup+44.7018 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468208/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=4056 CPUtime=44.68
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 908 0 0 0 4468 0 0 0 25 0 1 0 230956138 4153344 854 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519964 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 1014 854 67 122 0 888 0
Current children cumulated CPU time (s) 44.68
Current children cumulated vsize (KiB) 4056

[startup+47.9021 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468144/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=4056 CPUtime=47.87
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 910 0 0 0 4787 0 0 0 25 0 1 0 230956138 4153344 856 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 47.87
Current children cumulated vsize (KiB) 4056

[startup+49.5053 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468144/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=4056 CPUtime=49.48
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 910 0 0 0 4948 0 0 0 25 0 1 0 230956138 4153344 856 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530053 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 49.48
Current children cumulated vsize (KiB) 4056

[startup+49.9013 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468144/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=4056 CPUtime=49.88
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 910 0 0 0 4987 1 0 0 25 0 1 0 230956138 4153344 856 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134529792 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (KiB) 4056

[startup+50.1013 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468144/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=4056 CPUtime=50.08
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 910 0 0 0 5007 1 0 0 25 0 1 0 230956138 4153344 856 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134528236 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 50.08
Current children cumulated vsize (KiB) 4056

[startup+50.2013 s]
/proc/loadavg: 0.99 0.97 0.98 2/78 18211
/proc/meminfo: memFree=1468144/2055920 swapFree=4169140/4192956
[pid=18210] ppid=18208 vsize=4056 CPUtime=50.18
/proc/18210/stat : 18210 (mxc) R 18208 18210 16747 0 -1 4194304 910 0 0 0 5017 1 0 0 25 0 1 0 230956138 4153344 856 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519280 0 0 4096 0 0 0 0 17 1 0 0
/proc/18210/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 50.18
Current children cumulated vsize (KiB) 4056

Child status: 20
Real time (s): 50.2693
CPU time (s): 50.2424
CPU user time (s): 50.2314
CPU system time (s): 0.010998
CPU usage (%): 99.9463
Max. virtual memory (cumulated for all children) (KiB): 4056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 50.2314
system time used= 0.010998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 912
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= 74

runsolver used 0.036994 second user time and 0.113982 second system time

The end

Launcher Data (download as text)

Begin job on node15 on Sun Apr 29 07:06:25 UTC 2007

IDJOB= 426875
IDBENCH= 20220
IDSOLVER= 174
FILE ID= node15/426875-1177830385

PBS_JOBID= 4718240

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-S1377128774-12-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/426875-1177830385/mxc /tmp/evaluation/426875-1177830385/instance-426875-1177830385.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node15/watcher-426875-1177830385 -o ROOT/results/node15/solver-426875-1177830385 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/426875-1177830385/mxc /tmp/evaluation/426875-1177830385/instance-426875-1177830385.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  cc733e9a0d26b1e09913a40f9eba8e3c

RANDOM SEED= 939705027

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node15.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		: 3000.227
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		: 3000.227
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:       1472072 kB
Buffers:         50644 kB
Cached:         434980 kB
SwapCached:       2956 kB
Active:         250632 kB
Inactive:       258544 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1472072 kB
SwapTotal:     4192956 kB
SwapFree:      4169140 kB
Dirty:             748 kB
Writeback:           0 kB
Mapped:          30756 kB
Slab:            60080 kB
Committed_AS:  7158088 kB
PageTables:       1868 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 node15 on Sun Apr 29 07:07:16 UTC 2007