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-air01.opb
MD5SUM90db1995bd949fc5ac74143a523f3bcf
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3398
Optimality of the best value was proved YES
Number of terms in the objective function 771
Biggest coefficient in the objective function 3698
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 1192753
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 3698
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 1192753
Number of bits of the biggest sum of numbers21
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark112.221
Number of variables771
Total number of constraints794
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)794
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint438

Trace number 10378

Launcher Data

LAUNCH ON wulflinc14 THE 2005-09-23 17:59:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9137 boxname=wulflinc14 idbench=933 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  90db1995bd949fc5ac74143a523f3bcf  /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-13-7-air01.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-13-7-air01.opb
IDLAUNCH: 9137
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.058
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	: 2
cpu MHz		: 451.058
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:        982852 kB
Buffers:          2668 kB
Cached:          32148 kB
SwapCached:          0 kB
Active:          16988 kB
Inactive:        20724 kB
HighTotal:      131008 kB
HighFree:        94612 kB
LowTotal:       903652 kB
LowFree:        888240 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8532 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 18:01:09 (client local time) WITH STATUS 1 IN 118.959 SECONDS
stats: 9137 7 118.959 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 4827
c big objective detected
c trying from 0 to 511
c CONFLICT during preprocess 
c trying from 512 to 1023
c CONFLICT during preprocess 
c trying from 1024 to 1535

	Unexpected exception :
	St9bad_alloc

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/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 22172650 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 373 2 364 364 0 9 0
[pid=9736] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-13-7-air01.opb

[startup+10.0027 s]
Raw data (loadavg): 0.95 0.97 0.95 2/55 9736
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 29805 0 0 0 930 66 0 0 25 0 1 0 22172650 97423360 18659 4294967295 134512640 135987407 3221224560 3221064416 134892406 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 23785 18659 364 364 0 23421 0
[pid=9736] vsize: 95140
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 95140

[startup+20.0034 s]
Raw data (loadavg): 0.95 0.97 0.95 2/55 9736
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 58384 0 0 0 1866 127 0 0 25 0 1 0 22172650 175644672 35262 4294967295 134512640 135987407 3221224560 3221223248 134789619 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9736/statm): 42882 35262 364 364 0 42518 0
[pid=9736] vsize: 171528
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 171528

[startup+30.004 s]
Raw data (loadavg): 0.96 0.97 0.95 2/55 9736
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 89955 0 0 0 2795 195 0 0 25 0 1 0 22172650 280432640 56925 4294967295 134512640 135987407 3221224560 3221125136 134537371 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 68465 56925 364 364 0 68101 0
[pid=9736] vsize: 273860
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 273860

[startup+40.0047 s]
Raw data (loadavg): 0.97 0.97 0.95 2/55 9736
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 112459 0 0 0 3748 241 0 0 25 0 1 0 22172650 336171008 66902 4294967295 134512640 135987407 3221224560 3220973724 135484789 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 82073 66902 364 364 0 81709 0
[pid=9736] vsize: 328292
Current children cumulated CPU time (s) 39.89
Current children cumulated vsize (Kb) 328292

[startup+50.0054 s]
Raw data (loadavg): 0.97 0.97 0.95 2/55 9736
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 129752 0 0 0 4708 278 0 0 25 0 1 0 22172650 379719680 83969 4294967295 134512640 135987407 3221224560 3221099840 134878666 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 92705 83969 364 364 0 92341 0
[pid=9736] vsize: 370820
Current children cumulated CPU time (s) 49.86
Current children cumulated vsize (Kb) 370820

[startup+60.006 s]
Raw data (loadavg): 0.97 0.97 0.95 2/55 9791
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 170784 0 0 0 5626 355 0 0 25 0 1 0 22172650 512798720 105391 4294967295 134512640 135987407 3221224560 3221164640 134856581 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9736/statm): 125195 105392 364 364 0 124831 0
[pid=9736] vsize: 500780
Current children cumulated CPU time (s) 59.81
Current children cumulated vsize (Kb) 500780

[startup+70.0067 s]
Raw data (loadavg): 0.98 0.97 0.95 2/55 9791
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 197695 0 0 0 6551 425 0 0 24 0 1 0 22172650 603656192 127867 4294967295 134512640 135987407 3221224560 3221223360 134802405 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 147377 127867 364 364 0 147013 0
[pid=9736] vsize: 589508
Current children cumulated CPU time (s) 69.76
Current children cumulated vsize (Kb) 589508

[startup+80.0074 s]
Raw data (loadavg): 0.98 0.97 0.95 2/55 9791
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 222821 0 0 0 7495 480 0 0 25 0 1 0 22172650 822288384 152819 4294967295 134512640 135987407 3221224560 3221215568 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 200754 152819 364 364 0 200390 0
[pid=9736] vsize: 803016
Current children cumulated CPU time (s) 79.75
Current children cumulated vsize (Kb) 803016

[startup+90.0081 s]
Raw data (loadavg): 0.98 0.97 0.95 2/55 9791
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 241842 0 0 0 8454 522 0 0 25 0 1 0 22172650 722296832 147032 4294967295 134512640 135987407 3221224560 3221181296 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 176342 147032 364 364 0 175978 0
[pid=9736] vsize: 705368
Current children cumulated CPU time (s) 89.76
Current children cumulated vsize (Kb) 705368

[startup+100.008 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 9791
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 253794 0 0 0 9427 548 0 0 25 0 1 0 22172650 734461952 158746 4294967295 134512640 135987407 3221224560 3221072216 135484963 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9736/statm): 179312 158746 364 364 0 178948 0
[pid=9736] vsize: 717248
Current children cumulated CPU time (s) 99.75
Current children cumulated vsize (Kb) 717248

[startup+110.008 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 9791
Raw data (/proc/9736/stat): 9736 (pb2sat) R 9735 9736 4060 0 -1 0 266535 0 0 0 10397 576 0 0 25 0 1 0 22172650 769892352 171293 4294967295 134512640 135987407 3221224560 3220986032 134537559 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9736/statm): 187962 171293 364 364 0 187598 0
[pid=9736] vsize: 751848
Current children cumulated CPU time (s) 109.73
Current children cumulated vsize (Kb) 751848
One traced child (pid=9736) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 119.235
CPU time (s): 118.959
CPU user time (s): 112.758
CPU system time (s): 6.20106
CPU usage (%): 99.7684
Max. virtual memory (cumulated for all children) (Kb): 803016

Verifier Data

ERROR: no interpretation found !