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-v2-20-10/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos12.opb
MD5SUM4968ba84d5c370c0dd8f5e6c6068a443
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2147483647
Optimality of the best value was proved NO
Number of terms in the objective function 13440
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 481036336704
Number of bits of the sum of numbers in the objective function 39
Biggest number in a constraint 536870912
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 481036336704
Number of bits of the biggest sum of numbers39
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1211.72
Number of variables22960
Total number of constraints11747
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)3136
Number of constraints which are nor clauses,nor cardinality constraints8611
Minimum length of a constraint1
Maximum length of a constraint840

Trace number 26207 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc23 THE 2005-05-24 14:44:27 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=14536 boxname=wulflinc23 idbench=1119 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  4968ba84d5c370c0dd8f5e6c6068a443  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-neos12.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-neos12.opb
IDLAUNCH: 14536
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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:        915996 kB
Buffers:         34972 kB
Cached:          61264 kB
SwapCached:        664 kB
Active:          62584 kB
Inactive:        36176 kB
HighTotal:      131008 kB
HighFree:        68600 kB
LowTotal:       903652 kB
LowFree:        847396 kB
SwapTotal:     2097136 kB
SwapFree:      2096032 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5656 kB
Slab:            14128 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-24 14:45:20 (client local time) WITH STATUS 20 IN 52.367 SECONDS
stats: 14536 7 52.367 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 22960 variables and 9185 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 52.284 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
Raw data (loadavg): 0.82 1.00 1.47 2/54 5985
Raw data (stat): 5985 (runsolver) R 5984 5562 5561 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 831057651 1052672 99 4294967295 134512640 135381576 3221224480 3221219692 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0009 s]
Raw data (loadavg): 0.85 1.00 1.47 2/54 5985
Raw data (stat): 5985 (bsolo_lpr_cuts) R 5984 5562 5561 0 -1 0 3147 0 0 0 991 6 0 0 25 0 1 0 831057651 25911296 3071 4294967295 134512640 134714508 3221224576 3221222804 1077414385 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 6326 3071 1111 63 0 6263 0
vsize: 25304
[startup+20.0016 s]
Raw data (loadavg): 0.87 1.00 1.46 2/54 5985
Raw data (stat): 5985 (bsolo_lpr_cuts) R 5984 5562 5561 0 -1 0 6346 0 0 0 1984 14 0 0 25 0 1 0 831057651 38961152 6270 4294967295 134512640 134714508 3221224576 3221223232 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9512 6270 1111 63 0 9449 0
vsize: 38048
[startup+30.0018 s]
Raw data (loadavg): 0.89 1.00 1.45 2/54 5985
Raw data (stat): 5985 (bsolo_lpr_cuts) R 5984 5562 5561 0 -1 0 33353 0 0 0 2925 73 0 0 25 0 1 0 831057651 149655552 33277 4294967295 134512640 134714508 3221224576 3221222860 1077399562 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 36537 33277 1111 63 0 36474 0
vsize: 146148
[startup+40.002 s]
Raw data (loadavg): 0.91 1.00 1.45 2/54 5985
Raw data (stat): 5985 (bsolo_lpr_cuts) R 5984 5562 5561 0 -1 0 35283 0 0 0 3919 79 0 0 25 0 1 0 831057651 157495296 35207 4294967295 134512640 134714508 3221224576 3221222860 1077399562 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 38451 35207 1111 63 0 38388 0
vsize: 153804
[startup+50.0036 s]
Raw data (loadavg): 0.92 1.00 1.44 2/54 5985
Raw data (stat): 5985 (bsolo_lpr_cuts) R 5984 5562 5561 0 -1 0 37246 0 0 0 4914 84 0 0 25 0 1 0 831057651 165605376 37170 4294967295 134512640 134714508 3221224576 3221222860 1077399562 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 40431 37170 1111 63 0 40368 0
vsize: 161724
[startup+52.3793 s]
Raw data (loadavg): 0.93 1.00 1.44 1/53 5985
Raw data (stat): 5985 (bsolo_lpr_cuts) R 5984 5562 5561 0 -1 0 37246 0 0 0 4914 84 0 0 25 0 1 0 831057651 165605376 37170 4294967295 134512640 134714508 3221224576 3221222860 1077399562 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 40431 37170 1111 63 0 40368 0
vsize: 0

Child status: 20
Real time (s): 52.3786
CPU time (s): 52.367
CPU user time (s): 51.4022
CPU system time (s): 0.964853
CPU usage (%): 99.9779
Max. virtual memory (Kb): 161724
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####