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-bnl2.opb
MD5SUM98512bff24b30a4b39304804d2f8a5cb
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 50550
Biggest coefficient in the objective function 322444669747200
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 11314136774293353
Number of bits of the sum of numbers in the objective function 54
Biggest number in a constraint 322444669747200
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 11314136774293353
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark56.7314
Number of variables104670
Total number of constraints2280
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 constraints2280
Minimum length of a constraint30
Maximum length of a constraint2460

Trace number 2733

Launcher Data

LAUNCH ON wulflinc22 THE 2005-09-18 21:30:30 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3929 boxname=wulflinc22 idbench=413 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  98512bff24b30a4b39304804d2f8a5cb  /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-bnl2.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-bnl2.opb
IDLAUNCH: 3929
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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		: 451.031
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:        889864 kB
Buffers:         34908 kB
Cached:          81992 kB
SwapCached:        536 kB
Active:          78412 kB
Inactive:        41096 kB
HighTotal:      131008 kB
HighFree:        46956 kB
LowTotal:       903652 kB
LowFree:        842908 kB
SwapTotal:     2097892 kB
SwapFree:      2096832 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5864 kB
Slab:            19636 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 21:33:48 (client local time) WITH STATUS 20 IN 197.261 SECONDS
stats: 3929 7 197.261 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-bnl2.opb ......
s UNSATISFIABLE
c Done, CPU Time=8.44072

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/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1844509527 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/2485/statm): 239 2 232 232 0 7 0
[pid=2485] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-bnl2.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-bnl2.opb

[startup+10.003 s]
Raw data (loadavg): 0.94 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4685 0 0 0 983 15 0 0 25 0 1 0 1844509527 19505152 4439 4294967295 134512640 135450776 3221224560 3221223072 134599243 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4762 4439 232 232 0 4530 0
[pid=2485] vsize: 19048
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 19048

[startup+20.0047 s]
Raw data (loadavg): 0.95 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4685 0 0 0 1983 15 0 0 25 0 1 0 1844509527 19505152 4439 4294967295 134512640 135450776 3221224560 3221223072 134600038 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4762 4439 232 232 0 4530 0
[pid=2485] vsize: 19048
Current children cumulated CPU time (s) 19.98
Current children cumulated vsize (Kb) 19048

[startup+30.0054 s]
Raw data (loadavg): 0.95 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4685 0 0 0 2983 15 0 0 25 0 1 0 1844509527 19505152 4439 4294967295 134512640 135450776 3221224560 3221223072 134600038 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4762 4439 232 232 0 4530 0
[pid=2485] vsize: 19048
Current children cumulated CPU time (s) 29.98
Current children cumulated vsize (Kb) 19048

[startup+40.0061 s]
Raw data (loadavg): 0.96 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4685 0 0 0 3984 15 0 0 25 0 1 0 1844509527 19505152 4439 4294967295 134512640 135450776 3221224560 3221223072 134599221 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4762 4439 232 232 0 4530 0
[pid=2485] vsize: 19048
Current children cumulated CPU time (s) 39.99
Current children cumulated vsize (Kb) 19048

[startup+50.0058 s]
Raw data (loadavg): 0.97 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 4983 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 49.98
Current children cumulated vsize (Kb) 19840

[startup+60.0055 s]
Raw data (loadavg): 0.97 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 5984 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 59.99
Current children cumulated vsize (Kb) 19840

[startup+70.0052 s]
Raw data (loadavg): 0.97 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 6984 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 69.99
Current children cumulated vsize (Kb) 19840

[startup+80.0059 s]
Raw data (loadavg): 0.98 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 7984 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 79.99
Current children cumulated vsize (Kb) 19840

[startup+90.0056 s]
Raw data (loadavg): 0.98 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 8984 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 89.99
Current children cumulated vsize (Kb) 19840

[startup+100.005 s]
Raw data (loadavg): 0.98 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 9984 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 99.99
Current children cumulated vsize (Kb) 19840

[startup+110.006 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 10985 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 110
Current children cumulated vsize (Kb) 19840

[startup+120.007 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 11985 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600466 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 120
Current children cumulated vsize (Kb) 19840

[startup+130.007 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 12985 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 130
Current children cumulated vsize (Kb) 19840

[startup+140.007 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 13985 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 140
Current children cumulated vsize (Kb) 19840

[startup+150.007 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 14985 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600384 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 150
Current children cumulated vsize (Kb) 19840

[startup+160.008 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 4883 0 0 0 15986 15 0 0 25 0 1 0 1844509527 20316160 4637 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 4960 4637 232 232 0 4728 0
[pid=2485] vsize: 19840
Current children cumulated CPU time (s) 160.01
Current children cumulated vsize (Kb) 19840

[startup+170.007 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 8067 0 0 0 16975 24 0 0 25 0 1 0 1844509527 25047040 5841 4294967295 134512640 135450776 3221224560 3221223072 134599255 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 6115 5841 232 232 0 5883 0
[pid=2485] vsize: 24460
Current children cumulated CPU time (s) 169.99
Current children cumulated vsize (Kb) 24460

[startup+180.008 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 10471 0 0 0 17963 33 0 0 25 0 1 0 1844509527 33325056 7849 4294967295 134512640 135450776 3221224560 3221223072 134855177 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/2485/statm): 8136 7849 232 232 0 7904 0
[pid=2485] vsize: 32544
Current children cumulated CPU time (s) 179.96
Current children cumulated vsize (Kb) 32544

[startup+190.009 s]
Raw data (loadavg): 0.99 0.98 0.91 2/56 2485
Raw data (/proc/2485/stat): 2485 (PBS4) R 2484 2485 21452 0 -1 0 15114 0 0 0 18949 46 0 0 25 0 1 0 1844509527 51011584 9684 4294967295 134512640 135450776 3221224560 3221223184 134538944 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2485/statm): 12454 9684 232 232 0 12222 0
[pid=2485] vsize: 49816
Current children cumulated CPU time (s) 189.95
Current children cumulated vsize (Kb) 49816
One traced child (pid=2485) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 197.321
CPU time (s): 197.261
CPU user time (s): 196.761
CPU system time (s): 0.499924
CPU usage (%): 99.9697
Max. virtual memory (cumulated for all children) (Kb): 49816

Verifier Data

ERROR: no interpretation found !