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-neos8.opb
MD5SUM74f2ccfaf3fc18110d6ed0b0b3cd2342
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -3719
Optimality of the best value was proved NO
Number of terms in the objective function 68
Biggest coefficient in the objective function 2700
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 54380
Number of bits of the sum of numbers in the objective function 16
Biggest number in a constraint 2700
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 54380
Number of bits of the biggest sum of numbers16
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark37.5293
Number of variables23264
Total number of constraints69552
Number of constraints which are clauses20804
Number of constraints which are cardinality constraints (but not clauses)23228
Number of constraints which are nor clauses,nor cardinality constraints25520
Minimum length of a constraint1
Maximum length of a constraint2747

Trace number 41666 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-09 19:29:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29736 boxname=wulflinc5 idbench=1520 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  74f2ccfaf3fc18110d6ed0b0b3cd2342  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-neos8.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-13-7-neos8.opb
IDLAUNCH: 29736
/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:        895240 kB
Buffers:          6228 kB
Cached:         111472 kB
SwapCached:        620 kB
Active:          29124 kB
Inactive:        90544 kB
HighTotal:      131008 kB
HighFree:        19572 kB
LowTotal:       903652 kB
LowFree:        875668 kB
SwapTotal:     2097136 kB
SwapFree:      2095508 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:           5076 kB
Slab:            13876 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 19:29:55 (client local time) WITH STATUS 0 IN 52.567 SECONDS
stats: 29736 7 52.567 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
#### 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): 0.66 0.89 0.88 2/54 6008
Raw data (stat): 6008 (runsolver) R 6007 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 912800525 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+9.9996 s]
Raw data (loadavg): 0.71 0.89 0.89 2/54 6008
Raw data (stat): 6008 (bsolo_lpr_cuts-) R 6007 7266 7265 0 -1 0 65971 0 0 0 856 142 0 0 25 0 1 0 912800525 283430912 65891 4294967295 134512640 134716908 3221224560 3221223204 1077374077 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 69197 65891 1111 63 0 69134 0
vsize: 276788
[startup+20.0033 s]
Raw data (loadavg): 0.75 0.90 0.89 2/54 6008
Raw data (stat): 6008 (bsolo_lpr_cuts-) R 6007 7266 7265 0 -1 0 99584 0 0 0 1793 205 0 0 25 0 1 0 912800525 421318656 99504 4294967295 134512640 134716908 3221224560 3221222476 1077244238 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 102861 99504 1111 63 0 102798 0
vsize: 411444
[startup+30.0031 s]
Raw data (loadavg): 0.79 0.90 0.89 2/54 6008
Raw data (stat): 6008 (bsolo_lpr_cuts-) R 6007 7266 7265 0 -1 0 118986 0 0 0 2761 238 0 0 25 0 1 0 912800525 500854784 118906 4294967295 134512640 134716908 3221224560 3221222836 1077414338 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 122279 118906 1111 63 0 122216 0
vsize: 489116
[startup+40.0028 s]
Raw data (loadavg): 0.82 0.90 0.89 2/54 6008
Raw data (stat): 6008 (bsolo_lpr_cuts-) R 6007 7266 7265 0 -1 0 128911 0 0 0 3745 254 0 0 25 0 1 0 912800525 541581312 128831 4294967295 134512640 134716908 3221224560 3221222836 1077414370 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 132222 128831 1111 63 0 132159 0
vsize: 528888
[startup+50.0035 s]
Raw data (loadavg): 0.85 0.91 0.89 2/54 6008
Raw data (stat): 6008 (bsolo_lpr_cuts-) R 6007 7266 7265 0 -1 0 138368 0 0 0 4727 271 0 0 25 0 1 0 912800525 580243456 138288 4294967295 134512640 134716908 3221224560 3221222836 1077414413 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 141661 138288 1111 63 0 141598 0
vsize: 566644
[startup+52.5758 s]
Raw data (loadavg): 0.86 0.91 0.89 1/53 6008
Raw data (stat): 6008 (bsolo_lpr_cuts-) R 6007 7266 7265 0 -1 0 138368 0 0 0 4727 271 0 0 25 0 1 0 912800525 580243456 138288 4294967295 134512640 134716908 3221224560 3221222836 1077414413 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 141661 138288 1111 63 0 141598 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 52.5756
CPU time (s): 52.567
CPU user time (s): 49.5575
CPU system time (s): 3.00954
CPU usage (%): 99.9837
Max. virtual memory (Kb): 566644
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####