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).
  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

Namenormalized-opb/mps-v2-13-7/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-mkc1.opb
MD5SUMd176539199497efb0c829821dd5c09ea
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 0
Optimality of the best value was proved NO
Number of terms in the objective function 18598
Biggest coefficient in the objective function 2560000
Number of bits for the biggest coefficient in the objective function 22
Sum of the numbers in the objective function 7036117195
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 524288000
Number of bits of the biggest number in a constraint 29
Biggest sum of numbers in a constraint 8002856320
Number of bits of the biggest sum of numbers33
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark7.43987
Number of variables21015
Total number of constraints8734
Number of constraints which are clauses712
Number of constraints which are cardinality constraints (but not clauses)3174
Number of constraints which are nor clauses,nor cardinality constraints4848
Minimum length of a constraint1
Maximum length of a constraint18426

Trace number 41650 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-09 19:06:16 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29717 boxname=wulflinc5 idbench=1501 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  d176539199497efb0c829821dd5c09ea  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-mkc1.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-mkc1.opb
IDLAUNCH: 29717
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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		: 451.007
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:        916012 kB
Buffers:          4324 kB
Cached:          92704 kB
SwapCached:        620 kB
Active:          25236 kB
Inactive:        73744 kB
HighTotal:      131008 kB
HighFree:        38304 kB
LowTotal:       903652 kB
LowFree:        877708 kB
SwapTotal:     2097136 kB
SwapFree:      2095508 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5076 kB
Slab:            13808 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 19:08:03 (client local time) WITH STATUS 20 IN 106.201 SECONDS
stats: 29717 7 106.201 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 21015 variables and 5585 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 106.102 s
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.84 0.94 0.90 2/54 5450
Raw data (stat): 5450 (runsolver) R 5449 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 912663857 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.001 s]
Raw data (loadavg): 0.87 0.94 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 7425 0 0 0 980 16 0 0 25 0 1 0 912663857 43159552 7345 4294967295 134512640 134716908 3221224560 3221222788 1077414388 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 10537 7345 1111 63 0 10474 0
vsize: 42148
[startup+20.0013 s]
Raw data (loadavg): 0.89 0.94 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 11698 0 0 0 1970 27 0 0 25 0 1 0 912663857 60723200 11618 4294967295 134512640 134716908 3221224560 3221222788 1077414383 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 14825 11618 1111 63 0 14762 0
vsize: 59300
[startup+30.001 s]
Raw data (loadavg): 0.90 0.94 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 16791 0 0 0 2959 38 0 0 25 0 1 0 912663857 81649664 16711 4294967295 134512640 134716908 3221224560 3221223216 134527946 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 19934 16711 1111 63 0 19871 0
vsize: 79736
[startup+40.0012 s]
Raw data (loadavg): 0.92 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 22521 0 0 0 3950 47 0 0 25 0 1 0 912663857 105041920 22441 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 25645 22441 1111 63 0 25582 0
vsize: 102580
[startup+50.0015 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 28849 0 0 0 4937 60 0 0 25 0 1 0 912663857 130912256 28769 4294967295 134512640 134716908 3221224560 3221223216 134527956 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 31961 28769 1111 63 0 31898 0
vsize: 127844
[startup+60.0026 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 33883 0 0 0 5927 71 0 0 25 0 1 0 912663857 151650304 33803 4294967295 134512640 134716908 3221224560 3221222836 1077414336 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 37024 33803 1111 63 0 36961 0
vsize: 148096
[startup+70.0034 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 33991 0 0 0 6926 71 0 0 25 0 1 0 912663857 152055808 33911 4294967295 134512640 134716908 3221224560 3221222836 1077414357 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 37123 33911 1111 63 0 37060 0
vsize: 148492
[startup+80.0042 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 34160 0 0 0 7925 72 0 0 25 0 1 0 912663857 152866816 34080 4294967295 134512640 134716908 3221224560 3221222836 1077414435 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 37321 34080 1111 63 0 37258 0
vsize: 149284
[startup+90.0045 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 34687 0 0 0 8924 74 0 0 25 0 1 0 912663857 155049984 34605 4294967295 134512640 134716908 3221224560 3221223056 134539126 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 37854 34605 1111 63 0 37791 0
vsize: 151416
[startup+100.005 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 35792 0 0 0 9921 77 0 0 25 0 1 0 912663857 159625216 35691 4294967295 134512640 134716908 3221224560 3221222844 1077399562 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 38971 35691 1111 63 0 38908 0
vsize: 155884
[startup+106.218 s]
Raw data (loadavg): 0.97 0.95 0.91 1/53 5450
Raw data (stat): 5450 (bsolo_lpr_cuts-) R 5449 7266 7265 0 -1 0 35792 0 0 0 9921 77 0 0 25 0 1 0 912663857 159625216 35691 4294967295 134512640 134716908 3221224560 3221222844 1077399562 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 38971 35691 1111 63 0 38908 0
vsize: 0

Child status: 20
Real time (s): 106.217
CPU time (s): 106.201
CPU user time (s): 105.002
CPU system time (s): 1.19882
CPU usage (%): 99.9844
Max. virtual memory (Kb): 155884
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####