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/MIPLIB/miplib/normalized-mps-v2-20-10-set1ch.opb
MD5SUM68664c9c03d64725e7986525f71ad273
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 569806848
Optimality of the best value was proved NO
Number of terms in the objective function 7200
Biggest coefficient in the objective function 10737418240
Number of bits for the biggest coefficient in the objective function 34
Sum of the numbers in the objective function 1616658659871
Number of bits of the sum of numbers in the objective function 41
Biggest number in a constraint 10737418240
Number of bits of the biggest number in a constraint 34
Biggest sum of numbers in a constraint 1616658659871
Number of bits of the biggest sum of numbers41
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1233.02
Number of variables14400
Total number of constraints732
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)240
Number of constraints which are nor clauses,nor cardinality constraints492
Minimum length of a constraint1
Maximum length of a constraint630

Trace number 28511 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-05-25 03:05:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=12287 boxname=wulflinc5 idbench=946 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  68664c9c03d64725e7986525f71ad273  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-set1ch.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-set1ch.opb
IDLAUNCH: 12287
/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:        544668 kB
Buffers:         22152 kB
Cached:         444476 kB
SwapCached:       1348 kB
Active:          39604 kB
Inactive:       430328 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        544416 kB
SwapTotal:     2097136 kB
SwapFree:      2095356 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5748 kB
Slab:            14280 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-25 03:06:07 (client local time) WITH STATUS 20 IN 17.3264 SECONDS
stats: 12287 7 17.3264 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 14400 variables and 720 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 17.298 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): 0.80 0.93 0.95 2/54 17475
Raw data (stat): 17475 (runsolver) R 17474 7266 7265 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 777282967 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+10.0024 s]
Raw data (loadavg): 0.83 0.94 0.95 2/54 17475
Raw data (stat): 17475 (bsolo_lpr_cuts) R 17474 7266 7265 0 -1 0 3520 0 0 0 990 8 0 0 25 0 1 0 777282967 27406336 3444 4294967295 134512640 134714508 3221224592 3221223248 134527946 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 6691 3444 1111 63 0 6628 0
vsize: 26764
[startup+17.3609 s]
Raw data (loadavg): 0.84 0.94 0.95 1/53 17477
Raw data (stat): 17475 (bsolo_lpr_cuts) R 17474 7266 7265 0 -1 0 3520 0 0 0 990 8 0 0 25 0 1 0 777282967 27406336 3444 4294967295 134512640 134714508 3221224592 3221223248 134527946 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 6691 3444 1111 63 0 6628 0
vsize: 0

Child status: 20
Real time (s): 17.3603
CPU time (s): 17.3264
CPU user time (s): 17.0404
CPU system time (s): 0.285956
CPU usage (%): 99.8048
Max. virtual memory (Kb): 26764
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####