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/web/www.nlsde.buaa.edu.cn/~kexu/benchmarks/frb50-23-opb/normalized-frb50-23-4.opb
MD5SUMb85a90571dde4fe12541342d5605d680
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -37
Optimality of the best value was proved NO
Number of terms in the objective function 1150
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 1150
Number of bits of the sum of numbers in the objective function 11
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 1150
Number of bits of the biggest sum of numbers11
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1175.1
Number of variables1150
Total number of constraints80258
Number of constraints which are clauses80258
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint2
Maximum length of a constraint2

Trace number 2999 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc26 THE 2005-04-13 06:28:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3028 boxname=wulflinc26 idbench=337 idsolver=4 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  b85a90571dde4fe12541342d5605d680  /oldhome/oroussel/tmp/wulflinc26/normalized-frb50-23-4.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc26/normalized-frb50-23-4.opb
IDLAUNCH: 3028
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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		: 451.061
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:        866612 kB
Buffers:          8416 kB
Cached:         119124 kB
SwapCached:       2476 kB
Active:          19260 kB
Inactive:       113900 kB
HighTotal:      131008 kB
HighFree:        20076 kB
LowTotal:       903652 kB
LowFree:        846536 kB
SwapTotal:     2097892 kB
SwapFree:      2095416 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           7308 kB
Slab:            29272 kB
Committed_AS:    63956 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-13 06:28:59 (client local time) WITH STATUS 0 IN  SECONDS
stats: 3028 7  0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Decisions:	0
c Implications:	0
c RUNTIME:	3.88341s
s UNKNOWN
#### 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): 1.12 1.00 0.92 2/54 17377
Raw data (stat): 17377 (runsolver) R 17376 10348 10347 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 473798975 1056768 100 4294967295 134512640 135381576 3221221744 3221216500 135158418 0 0 7 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+4.03261 s]
Raw data (loadavg): 1.12 1.00 0.92 1/53 17377
Raw data (stat): 17377 (runsolver) R 17376 10348 10347 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 473798975 1056768 100 4294967295 134512640 135381576 3221221744 3221216500 135158418 0 0 7 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 0

Child status: 0
Real time (s): 4.03233
CPU time (s): 4.02439
CPU user time (s): 3.9454
CPU system time (s): 0.078987
CPU usage (%): 99.8029
Max. virtual memory (Kb): 1032
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####