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/MIPLIB/miplib/normalized-mps-v2-20-10-air02.opb
MD5SUM75acdcffdd43b3d3a30d0459a6bffe45
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 6106
Optimality of the best value was proved NO
Number of terms in the objective function 6774
Biggest coefficient in the objective function 4804
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 6613094
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 4804
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 6613094
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1189.47
Number of variables6774
Total number of constraints6824
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)6824
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint3729

Trace number 9997

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-23 16:25:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8754 boxname=wulflinc23 idbench=550 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  75acdcffdd43b3d3a30d0459a6bffe45  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-air02.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-air02.opb
IDLAUNCH: 8754
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.185
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		: 451.185
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:        917564 kB
Buffers:         14196 kB
Cached:          84472 kB
SwapCached:          0 kB
Active:          61032 kB
Inactive:        40508 kB
HighTotal:      131008 kB
HighFree:        42336 kB
LowTotal:       903652 kB
LowFree:        875228 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10040 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:27:29 (client local time) WITH STATUS 1 IN 108.196 SECONDS
stats: 8754 7 108.196 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 15142
c big objective detected
c trying from 0 to 511

	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/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21608353 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 373 2 364 364 0 9 0
[pid=7957] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-air02.opb

[startup+10.0013 s]
Raw data (loadavg): 0.87 0.94 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 14426 0 0 0 962 35 0 0 25 0 1 0 21608353 43675648 8884 4294967295 134512640 135987407 3221224560 3221026688 134878384 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 10663 8884 364 364 0 10299 0
[pid=7957] vsize: 42652
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 42652

[startup+20.003 s]
Raw data (loadavg): 0.89 0.94 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 44873 0 0 0 1888 104 0 0 25 0 1 0 21608353 135397376 28439 4294967295 134512640 135987407 3221224560 3221186480 134856412 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 33056 28439 364 364 0 32692 0
[pid=7957] vsize: 132224
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 132224

[startup+30.0036 s]
Raw data (loadavg): 0.90 0.94 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 80961 0 0 0 2806 183 0 0 25 0 1 0 21608353 260370432 48455 4294967295 134512640 135987407 3221224560 3219353040 134640439 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 63567 48455 364 364 0 63203 0
[pid=7957] vsize: 254268
Current children cumulated CPU time (s) 29.89
Current children cumulated vsize (Kb) 254268

[startup+40.0033 s]
Raw data (loadavg): 0.92 0.94 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 110435 0 0 0 3739 247 0 0 25 0 1 0 21608353 335302656 65403 4294967295 134512640 135987407 3221224560 3219670096 134931273 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 81861 65403 364 364 0 81497 0
[pid=7957] vsize: 327444
Current children cumulated CPU time (s) 39.86
Current children cumulated vsize (Kb) 327444

[startup+50.0039 s]
Raw data (loadavg): 0.93 0.94 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 127672 0 0 0 4698 286 0 0 25 0 1 0 21608353 394809344 82407 4294967295 134512640 135987407 3221224560 3219324832 134635350 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 96389 82407 364 364 0 96025 0
[pid=7957] vsize: 385556
Current children cumulated CPU time (s) 49.84
Current children cumulated vsize (Kb) 385556

[startup+60.0045 s]
Raw data (loadavg): 0.94 0.95 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 169372 0 0 0 5611 367 0 0 25 0 1 0 21608353 532078592 104498 4294967295 134512640 135987407 3221224560 3219444456 135478556 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 129902 104498 364 364 0 129538 0
[pid=7957] vsize: 519608
Current children cumulated CPU time (s) 59.78
Current children cumulated vsize (Kb) 519608

[startup+70.0052 s]
Raw data (loadavg): 0.95 0.95 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 208093 0 0 0 6529 448 0 0 25 0 1 0 21608353 756658176 143003 4294967295 134512640 135987407 3221224560 3220341968 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 184731 143003 364 364 0 184367 0
[pid=7957] vsize: 738924
Current children cumulated CPU time (s) 69.77
Current children cumulated vsize (Kb) 738924

[startup+80.0058 s]
Raw data (loadavg): 0.96 0.95 0.95 1/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) T 7956 7957 4060 0 -1 0 227473 0 0 0 7482 492 0 0 25 0 1 0 21608353 682078208 137564 4294967295 134512640 135987407 3221224560 3219057852 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/7957/statm): 166523 137564 364 364 0 166159 0
[pid=7957] vsize: 666092
Current children cumulated CPU time (s) 79.74
Current children cumulated vsize (Kb) 666092

[startup+90.0055 s]
Raw data (loadavg): 0.96 0.95 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 242300 0 0 0 8447 525 0 0 25 0 1 0 21608353 737259520 152191 4294967295 134512640 135987407 3221224560 3220547216 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 179995 152191 364 364 0 179631 0
[pid=7957] vsize: 719980
Current children cumulated CPU time (s) 89.72
Current children cumulated vsize (Kb) 719980

[startup+100.006 s]
Raw data (loadavg): 0.97 0.95 0.95 2/55 7957
Raw data (/proc/7957/stat): 7957 (pb2sat) R 7956 7957 4060 0 -1 0 260941 0 0 0 9405 563 0 0 25 0 1 0 21608353 767401984 170593 4294967295 134512640 135987407 3221224560 3220294208 134537540 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7957/statm): 187354 170593 364 364 0 186990 0
[pid=7957] vsize: 749416
Current children cumulated CPU time (s) 99.68
Current children cumulated vsize (Kb) 749416
One traced child (pid=7957) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 108.51
CPU time (s): 108.196
CPU user time (s): 102.182
CPU system time (s): 6.01308
CPU usage (%): 99.7102
Max. virtual memory (cumulated for all children) (Kb): 749416

Verifier Data

ERROR: no interpretation found !