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-neos13.opb
MD5SUM992db28a85bbc8236f0033edb6d28dee
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -4571955
Optimality of the best value was proved NO
Number of terms in the objective function 84
Biggest coefficient in the objective function 12944832
Number of bits for the biggest coefficient in the objective function 24
Sum of the numbers in the objective function 283368115
Number of bits of the sum of numbers in the objective function 29
Biggest number in a constraint 8745792000
Number of bits of the biggest number in a constraint 34
Biggest sum of numbers in a constraint 79079134958
Number of bits of the biggest sum of numbers37
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1291.11
Number of variables1899
Total number of constraints22679
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)1816
Number of constraints which are nor clauses,nor cardinality constraints20863
Minimum length of a constraint1
Maximum length of a constraint1815

Trace number 14609 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc22 THE 2005-04-21 00:42:47 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=19558 boxname=wulflinc22 idbench=1505 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  992db28a85bbc8236f0033edb6d28dee  /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-neos13.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-neos13.opb
IDLAUNCH: 19558
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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		: 451.031
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:        356600 kB
Buffers:         34840 kB
Cached:         603400 kB
SwapCached:          8 kB
Active:          93576 kB
Inactive:       547468 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        356348 kB
SwapTotal:     2097892 kB
SwapFree:      2097784 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6756 kB
Slab:            31312 kB
Committed_AS:    63488 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 00:43:17 (client local time) WITH STATUS 20 IN 28.6166 SECONDS
stats: 19558 7 28.6166 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-neos13.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.001999
#### 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): 0.93 0.96 0.91 2/54 24036
Raw data (stat): 24036 (runsolver) R 24035 26298 26297 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 540845052 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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+10.0005 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 24036
Raw data (stat): 24036 (PBS4) R 24035 26298 26297 0 -1 0 2836 0 0 0 985 14 0 0 25 0 1 0 540845052 12427264 2779 4294967295 134512640 135450300 3221224624 3221157312 135124493 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 3034 2779 231 231 0 2803 0
vsize: 12136
[startup+20.0019 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 24036
Raw data (stat): 24036 (PBS4) R 24035 26298 26297 0 -1 0 5478 0 0 0 1971 28 0 0 25 0 1 0 540845052 22937600 5316 4294967295 134512640 135450300 3221224624 3221157324 135084766 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 5600 5316 231 231 0 5369 0
vsize: 22400
[startup+28.6238 s]
Raw data (loadavg): 0.96 0.96 0.91 1/53 24036
Raw data (stat): 24036 (PBS4) R 24035 26298 26297 0 -1 0 5478 0 0 0 1971 28 0 0 25 0 1 0 540845052 22937600 5316 4294967295 134512640 135450300 3221224624 3221157324 135084766 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 5600 5316 231 231 0 5369 0
vsize: 0

Child status: 20
Real time (s): 28.6232
CPU time (s): 28.6166
CPU user time (s): 28.1627
CPU system time (s): 0.45393
CPU usage (%): 99.9771
Max. virtual memory (Kb): 22400
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####