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-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-pipex.opb
MD5SUMb9c1029cc1d97a8d60e984f96f5d3267
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 788263
Optimality of the best value was proved YES
Number of terms in the objective function 48
Biggest coefficient in the objective function 107865
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 2514082
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 107865
Number of bits of the biggest number in a constraint 17
Biggest sum of numbers in a constraint 2514082
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark35.1577
Number of variables48
Total number of constraints73
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint1
Maximum length of a constraint16

Trace number 8434

Launcher Data

LAUNCH ON wulflinc31 THE 2005-09-20 16:36:06 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=5608 boxname=wulflinc31 idbench=920 idsolver=5 numberseed=0
MD5SUM SOLVER: 104a539e9cf344a86ca96d2c957e7d7f  /oldhome/oroussel/solvers/Pueblo
MD5SUM BENCH:  b9c1029cc1d97a8d60e984f96f5d3267  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-pipex.opb
REAL COMMAND:  Pueblo
IDLAUNCH: 5608
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        843448 kB
Buffers:         32884 kB
Cached:         130312 kB
SwapCached:       1160 kB
Active:          60860 kB
Inactive:       105180 kB
HighTotal:      131008 kB
HighFree:         6188 kB
LowTotal:       903652 kB
LowFree:        837260 kB
SwapTotal:     2097892 kB
SwapFree:      2096252 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5700 kB
Slab:            19476 kB
Committed_AS:    64380 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 16:37:57 (client local time) WITH STATUS 30 IN 96.8013 SECONDS
stats: 5608 0 96.8013 30

Solver Data

c Pueblo version 1.3 (July 2005)
c Developed @ University of Michigan, Ann Arbor, MI
c  by Hossein Sheini
c starting to Solve
c #variables read: 48 - #constraints read: 90
c optimum objective found = 788263
c total time              : 96.79 s
s OPTIMUM FOUND
v QUAN0101_bit0 QUAN0102_bit0 -QUAN0103_bit0 -QUAN0104_bit0 -QUAN0105_bit0 -QUAN0106_bit0 -QUAN0107_bit0 -QUAN0108_bit0 -QUAN0109_bit0 -QUAN0110_bit0 QUAN0111_bit0 -QUAN0112_bit0 QUAN0113_bit0 -QUAN0114_bit0 -QUAN0115_bit0 -QUAN0116_bit0 -QUAN0201_bit0 -QUAN0202_bit0 -QUAN0203_bit0 -QUAN0204_bit0 -QUAN0205_bit0 -QUAN0206_bit0 QUAN0207_bit0 QUAN0208_bit0 -QUAN0209_bit0 -QUAN0210_bit0 -QUAN0211_bit0 QUAN0212_bit0 -QUAN0213_bit0 QUAN0214_bit0 QUAN0215_bit0 QUAN0216_bit0 -QUAN0301_bit0 -QUAN0302_bit0 QUAN0303_bit0 QUAN0304_bit0 QUAN0305_bit0 QUAN0306_bit0 -QUAN0307_bit0 -QUAN0308_bit0 QUAN0309_bit0 QUAN0310_bit0 -QUAN0311_bit0 -QUAN0312_bit0 -QUAN0313_bit0 -QUAN0314_bit0 -QUAN0315_bit0 -QUAN0316_bit0

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/13655/stat): 13655 (Pueblo) R 13654 13655 9102 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1859984408 167936 3 4294967295 134512640 134578447 3221224624 3221224624 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13655/statm): 41 3 40 18 0 23 0
[pid=13655] vsize: 164
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libstdc++.so.5
open syscall for file tls/i686/libstdc++.so.5
open syscall for file tls/mmx/libstdc++.so.5
open syscall for file tls/libstdc++.so.5
open syscall for file i686/mmx/libstdc++.so.5
open syscall for file i686/libstdc++.so.5
open syscall for file mmx/libstdc++.so.5
open syscall for file libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/i686/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/i686/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/i686/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/libstdc++.so.5
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++.so.5
open syscall for file tls/i686/mmx/libm.so.6
open syscall for file tls/i686/libm.so.6
open syscall for file tls/mmx/libm.so.6
open syscall for file tls/libm.so.6
open syscall for file i686/mmx/libm.so.6
open syscall for file i686/libm.so.6
open syscall for file mmx/libm.so.6
open syscall for file libm.so.6
open syscall for file /oldhome/oroussel/lib/libm.so.6
open syscall for file /lib/tls/libm.so.6
open syscall for file tls/i686/mmx/libgcc_s.so.1
open syscall for file tls/i686/libgcc_s.so.1
open syscall for file tls/mmx/libgcc_s.so.1
open syscall for file tls/libgcc_s.so.1
open syscall for file i686/mmx/libgcc_s.so.1
open syscall for file i686/libgcc_s.so.1
open syscall for file mmx/libgcc_s.so.1
open syscall for file libgcc_s.so.1
open syscall for file /oldhome/oroussel/lib/libgcc_s.so.1
open syscall for file /lib/libgcc_s.so.1
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6

[startup+10.0041 s]
Raw data (loadavg): 0.96 0.97 0.95 1/57 13655
Raw data (/proc/13655/stat): 13655 (Pueblo) T 13654 13655 9102 0 -1 0 293 0 0 0 727 93 0 0 21 0 1 0 1859984408 2768896 259 4294967295 134512640 134578447 3221224624 3221223656 1075514893 0 0 5 0 3222434794 0 0 17 1 0 0
Raw data (/proc/13655/statm): 676 259 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 8.2
Current children cumulated vsize (Kb) 2704

[startup+20.0051 s]
Raw data (loadavg): 0.97 0.97 0.95 2/57 13657
Raw data (/proc/13655/stat): 13655 (Pueblo) R 13654 13655 9102 0 -1 0 301 0 0 0 1492 173 0 0 18 0 1 0 1859984408 2768896 267 4294967295 134512640 134578447 3221224624 3221223648 134554422 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13655/statm): 676 267 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 16.65
Current children cumulated vsize (Kb) 2704

[startup+30.006 s]
Raw data (loadavg): 0.97 0.97 0.95 1/57 13657
Raw data (/proc/13655/stat): 13655 (Pueblo) T 13654 13655 9102 0 -1 0 303 0 0 0 2289 244 0 0 22 0 1 0 1859984408 2768896 269 4294967295 134512640 134578447 3221224624 3221223656 1075514893 0 0 5 0 3222434794 0 0 17 0 0 0
Raw data (/proc/13655/statm): 676 269 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 25.33
Current children cumulated vsize (Kb) 2704

[startup+40.0069 s]
Raw data (loadavg): 0.98 0.97 0.95 1/57 13657
Raw data (/proc/13655/stat): 13655 (Pueblo) T 13654 13655 9102 0 -1 0 307 0 0 0 3100 307 0 0 23 0 1 0 1859984408 2768896 273 4294967295 134512640 134578447 3221224624 3221223656 1075514893 0 0 5 0 3222434794 0 0 17 1 0 0
Raw data (/proc/13655/statm): 676 273 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 34.07
Current children cumulated vsize (Kb) 2704

[startup+50.0078 s]
Raw data (loadavg): 0.98 0.97 0.95 2/57 13657
Raw data (/proc/13655/stat): 13655 (Pueblo) R 13654 13655 9102 0 -1 0 311 0 0 0 3911 373 0 0 23 0 1 0 1859984408 2768896 277 4294967295 134512640 134578447 3221224624 3221223556 134527371 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13655/statm): 676 277 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 42.84
Current children cumulated vsize (Kb) 2704

[startup+60.0078 s]
Raw data (loadavg): 0.98 0.97 0.95 2/57 13657
Raw data (/proc/13655/stat): 13655 (Pueblo) R 13654 13655 9102 0 -1 0 312 0 0 0 4723 437 0 0 23 0 1 0 1859984408 2768896 278 4294967295 134512640 134578447 3221224624 3221223556 134527371 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13655/statm): 676 278 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 51.6
Current children cumulated vsize (Kb) 2704

[startup+70.0087 s]
Raw data (loadavg): 0.98 0.97 0.95 1/57 13657
Raw data (/proc/13655/stat): 13655 (Pueblo) T 13654 13655 9102 0 -1 0 312 0 0 0 5552 496 0 0 24 0 1 0 1859984408 2768896 278 4294967295 134512640 134578447 3221224624 3221223656 1075514893 0 0 5 0 3222434794 0 0 17 1 0 0
Raw data (/proc/13655/statm): 676 278 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 60.48
Current children cumulated vsize (Kb) 2704

[startup+80.0106 s]
Raw data (loadavg): 0.99 0.97 0.95 2/57 13659
Raw data (/proc/13655/stat): 13655 (Pueblo) R 13654 13655 9102 0 -1 0 316 0 0 0 6382 555 0 0 24 0 1 0 1859984408 2768896 282 4294967295 134512640 134578447 3221224624 3221223504 134527538 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13655/statm): 676 282 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 69.37
Current children cumulated vsize (Kb) 2704

[startup+90.0106 s]
Raw data (loadavg): 0.99 0.97 0.95 1/57 13659
Raw data (/proc/13655/stat): 13655 (Pueblo) T 13654 13655 9102 0 -1 0 317 0 0 0 7203 615 0 0 24 0 1 0 1859984408 2768896 283 4294967295 134512640 134578447 3221224624 3221223656 1075514893 0 0 5 0 3222434794 0 0 17 0 0 0
Raw data (/proc/13655/statm): 676 283 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 78.18
Current children cumulated vsize (Kb) 2704

[startup+100.01 s]
Raw data (loadavg): 0.99 0.97 0.95 1/57 13659
Raw data (/proc/13655/stat): 13655 (Pueblo) T 13654 13655 9102 0 -1 0 317 0 0 0 8030 672 0 0 24 0 1 0 1859984408 2768896 283 4294967295 134512640 134578447 3221224624 3221223656 1075514893 0 0 5 0 3222434794 0 0 17 0 0 0
Raw data (/proc/13655/statm): 676 283 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 87.02
Current children cumulated vsize (Kb) 2704

[startup+110.011 s]
Raw data (loadavg): 0.99 0.97 0.95 2/57 13659
Raw data (/proc/13655/stat): 13655 (Pueblo) R 13654 13655 9102 0 -1 0 317 0 0 0 8863 733 0 0 22 0 1 0 1859984408 2768896 283 4294967295 134512640 134578447 3221224624 3221223504 134527516 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13655/statm): 676 283 566 18 0 658 0
[pid=13655] vsize: 2704
Current children cumulated CPU time (s) 95.96
Current children cumulated vsize (Kb) 2704
One traced child (pid=13655) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 110.954
CPU time (s): 96.8013
CPU user time (s): 89.4164
CPU system time (s): 7.38488
CPU usage (%): 87.2445
Max. virtual memory (cumulated for all children) (Kb): 2704

Verifier Data

Verifier:	OK	788263