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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-pilot87.opb
MD5SUM867c3fb6ec2e95bf03283295db1251ec
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 11677
Biggest coefficient in the objective function 1769666112389120
Number of bits for the biggest coefficient in the objective function 51
Sum of the numbers in the objective function 75483970843122814
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 536870912000000000
Number of bits of the biggest number in a constraint 59
Biggest sum of numbers in a constraint 1323519003456940521
Number of bits of the biggest sum of numbers61
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark38.3472
Number of variables113921
Total number of constraints3645
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints3645
Minimum length of a constraint10
Maximum length of a constraint8647

Trace number 2829

Launcher Data

LAUNCH ON wulflinc19 THE 2005-09-18 22:03:48 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4007 boxname=wulflinc19 idbench=491 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  867c3fb6ec2e95bf03283295db1251ec  /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-pilot87.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-pilot87.opb
IDLAUNCH: 4007
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        880660 kB
Buffers:         34708 kB
Cached:          91484 kB
SwapCached:        832 kB
Active:          94408 kB
Inactive:        34428 kB
HighTotal:      131008 kB
HighFree:        38696 kB
LowTotal:       903652 kB
LowFree:        841964 kB
SwapTotal:     2097892 kB
SwapFree:      2096460 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5700 kB
Slab:            19440 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 22:07:06 (client local time) WITH STATUS 20 IN 196.748 SECONDS
stats: 4007 7 196.748 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-pilot87.opb ......
s UNSATISFIABLE
c Done, CPU Time=1.53977

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1844692975 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 239 2 232 232 0 7 0
[pid=13942] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-pilot87.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-pilot87.opb

[startup+10.0028 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 5717 0 0 0 981 16 0 0 25 0 1 0 1844692975 21815296 5050 4294967295 134512640 135450776 3221224560 3221222932 134524563 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 5326 5050 232 232 0 5094 0
[pid=13942] vsize: 21304
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 21304

[startup+20.0036 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 6230 0 0 0 1978 19 0 0 25 0 1 0 1844692975 24084480 5563 4294967295 134512640 135450776 3221224560 3221223072 134600495 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 5880 5563 232 232 0 5648 0
[pid=13942] vsize: 23520
Current children cumulated CPU time (s) 19.97
Current children cumulated vsize (Kb) 23520

[startup+30.0044 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 6444 0 0 0 2977 20 0 0 25 0 1 0 1844692975 24629248 5777 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 6013 5777 232 232 0 5781 0
[pid=13942] vsize: 24052
Current children cumulated CPU time (s) 29.97
Current children cumulated vsize (Kb) 24052

[startup+40.0052 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 6691 0 0 0 3975 22 0 0 25 0 1 0 1844692975 25714688 5957 4294967295 134512640 135450776 3221224560 3221223072 134600511 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 6278 5957 232 232 0 6046 0
[pid=13942] vsize: 25112
Current children cumulated CPU time (s) 39.97
Current children cumulated vsize (Kb) 25112

[startup+50.006 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 7266 0 0 0 4970 26 0 0 25 0 1 0 1844692975 28037120 6532 4294967295 134512640 135450776 3221224560 3221223072 134846925 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 6845 6532 232 232 0 6613 0
[pid=13942] vsize: 27380
Current children cumulated CPU time (s) 49.96
Current children cumulated vsize (Kb) 27380

[startup+60.0059 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 9295 0 0 0 5961 33 0 0 25 0 1 0 1844692975 35909632 8415 4294967295 134512640 135450776 3221224560 3221223072 134600511 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 8767 8415 232 232 0 8535 0
[pid=13942] vsize: 35068
Current children cumulated CPU time (s) 59.94
Current children cumulated vsize (Kb) 35068

[startup+70.0057 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 9453 0 0 0 6958 35 0 0 25 0 1 0 1844692975 36364288 8573 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 8878 8573 232 232 0 8646 0
[pid=13942] vsize: 35512
Current children cumulated CPU time (s) 69.93
Current children cumulated vsize (Kb) 35512

[startup+80.0065 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 9570 0 0 0 7956 37 0 0 25 0 1 0 1844692975 36847616 8690 4294967295 134512640 135450776 3221224560 3221223132 134672402 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 8996 8690 232 232 0 8764 0
[pid=13942] vsize: 35984
Current children cumulated CPU time (s) 79.93
Current children cumulated vsize (Kb) 35984

[startup+90.0063 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 9716 0 0 0 8954 38 0 0 25 0 1 0 1844692975 37363712 8836 4294967295 134512640 135450776 3221224560 3221223072 134599227 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 9122 8836 232 232 0 8890 0
[pid=13942] vsize: 36488
Current children cumulated CPU time (s) 89.92
Current children cumulated vsize (Kb) 36488

[startup+100.007 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 10015 0 0 0 9952 40 0 0 25 0 1 0 1844692975 39018496 9135 4294967295 134512640 135450776 3221224560 3221223136 134864625 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 9526 9135 232 232 0 9294 0
[pid=13942] vsize: 38104
Current children cumulated CPU time (s) 99.92
Current children cumulated vsize (Kb) 38104

[startup+110.008 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 10576 0 0 0 10949 43 0 0 25 0 1 0 1844692975 41189376 9696 4294967295 134512640 135450776 3221224560 3221223072 134600495 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 10056 9696 232 232 0 9824 0
[pid=13942] vsize: 40224
Current children cumulated CPU time (s) 109.92
Current children cumulated vsize (Kb) 40224

[startup+120.008 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 11183 0 0 0 11946 46 0 0 25 0 1 0 1844692975 43696128 10303 4294967295 134512640 135450776 3221224560 3221223072 134600421 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 10668 10303 232 232 0 10436 0
[pid=13942] vsize: 42672
Current children cumulated CPU time (s) 119.92
Current children cumulated vsize (Kb) 42672

[startup+130.009 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 11687 0 0 0 12942 48 0 0 25 0 1 0 1844692975 45748224 10807 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 11169 10807 232 232 0 10937 0
[pid=13942] vsize: 44676
Current children cumulated CPU time (s) 129.9
Current children cumulated vsize (Kb) 44676

[startup+140.008 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 11881 0 0 0 13940 49 0 0 25 0 1 0 1844692975 46579712 11001 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 11372 11001 232 232 0 11140 0
[pid=13942] vsize: 45488
Current children cumulated CPU time (s) 139.89
Current children cumulated vsize (Kb) 45488

[startup+150.009 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 12211 0 0 0 14938 51 0 0 25 0 1 0 1844692975 47771648 11331 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13942/statm): 11663 11331 232 232 0 11431 0
[pid=13942] vsize: 46652
Current children cumulated CPU time (s) 149.89
Current children cumulated vsize (Kb) 46652

[startup+160.01 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 12397 0 0 0 15936 53 0 0 25 0 1 0 1844692975 48353280 11517 4294967295 134512640 135450776 3221224560 3221223072 134600384 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 11805 11517 232 232 0 11573 0
[pid=13942] vsize: 47220
Current children cumulated CPU time (s) 159.89
Current children cumulated vsize (Kb) 47220

[startup+170.01 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 12732 0 0 0 16932 55 0 0 25 0 1 0 1844692975 49623040 11852 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 12115 11852 232 232 0 11883 0
[pid=13942] vsize: 48460
Current children cumulated CPU time (s) 169.87
Current children cumulated vsize (Kb) 48460

[startup+180.011 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 13196 0 0 0 17929 58 0 0 25 0 1 0 1844692975 51826688 12316 4294967295 134512640 135450776 3221224560 3221223072 134599360 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 12653 12316 232 232 0 12421 0
[pid=13942] vsize: 50612
Current children cumulated CPU time (s) 179.87
Current children cumulated vsize (Kb) 50612

[startup+190.01 s]
Raw data (loadavg): 1.00 0.99 0.94 2/56 13942
Raw data (/proc/13942/stat): 13942 (PBS4) R 13941 13942 5929 0 -1 0 14021 0 0 0 18922 64 0 0 25 0 1 0 1844692975 55545856 13141 4294967295 134512640 135450776 3221224560 3221223072 134600495 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13942/statm): 13561 13141 232 232 0 13329 0
[pid=13942] vsize: 54244
Current children cumulated CPU time (s) 189.86
Current children cumulated vsize (Kb) 54244
One traced child (pid=13942) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 196.897
CPU time (s): 196.748
CPU user time (s): 195.983
CPU system time (s): 0.764883
CPU usage (%): 99.9244
Max. virtual memory (cumulated for all children) (Kb): 54244

Verifier Data

ERROR: no interpretation found !