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/MIPLIB/miplib/normalized-mps-v2-13-7-bell3b.opb
MD5SUMeaa1b6e946f643598c767cbea970679c
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 1320
Biggest coefficient in the objective function 6291456000000000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 122055965815457650
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 6291456000000000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 122055965815457650
Number of bits of the biggest sum of numbers57
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.145976
Number of variables1663
Total number of constraints194
Number of constraints which are clauses22
Number of constraints which are cardinality constraints (but not clauses)39
Number of constraints which are nor clauses,nor cardinality constraints133
Minimum length of a constraint1
Maximum length of a constraint135

Trace number 27484 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc25 THE 2005-05-24 22:24:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=16694 boxname=wulflinc25 idbench=1285 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  eaa1b6e946f643598c767cbea970679c  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-13-7-bell3b.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-13-7-bell3b.opb
IDLAUNCH: 16694
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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:        880552 kB
Buffers:         36044 kB
Cached:          97172 kB
SwapCached:        812 kB
Active:          64024 kB
Inactive:        71740 kB
HighTotal:      131008 kB
HighFree:        33124 kB
LowTotal:       903652 kB
LowFree:        847428 kB
SwapTotal:     2097892 kB
SwapFree:      2096616 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5604 kB
Slab:            12760 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 22:24:50 (client local time) WITH STATUS 20 IN 0.673897 SECONDS
stats: 16694 7 0.673897 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 1663 variables and 147 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 0.662 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): 0.91 0.94 0.98 2/54 4042
Raw data (stat): 4042 (runsolver) R 4041 1586 1585 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833832504 1052672 99 4294967295 134512640 135381576 3221224480 3221219692 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.693654 s]
Raw data (loadavg): 0.91 0.94 0.98 1/53 4042
Raw data (stat): 4042 (runsolver) R 4041 1586 1585 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833832504 1052672 99 4294967295 134512640 135381576 3221224480 3221219692 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 20
Real time (s): 0.693332
CPU time (s): 0.673897
CPU user time (s): 0.614906
CPU system time (s): 0.058991
CPU usage (%): 97.1969
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####