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/miplib2003/normalized-mps-v2-13-7-pk1.opb
MD5SUM9c5126d785c8d5465220e290c5fc25a6
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 5120
Optimality of the best value was proved NO
Number of terms in the objective function 20
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 1048575
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 524288
Number of bits of the biggest number in a constraint 20
Biggest sum of numbers in a constraint 2421502
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1175.04
Number of variables675
Total number of constraints100
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)55
Number of constraints which are nor clauses,nor cardinality constraints45
Minimum length of a constraint1
Maximum length of a constraint95

Trace number 27196 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc17 THE 2005-05-24 20:17:11 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=17890 boxname=wulflinc17 idbench=1377 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  9c5126d785c8d5465220e290c5fc25a6  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-pk1.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-pk1.opb
IDLAUNCH: 17890
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        830272 kB
Buffers:          7828 kB
Cached:         174612 kB
SwapCached:        480 kB
Active:          40536 kB
Inactive:       144584 kB
HighTotal:      131008 kB
HighFree:         2436 kB
LowTotal:       903652 kB
LowFree:        827836 kB
SwapTotal:     2097892 kB
SwapFree:      2097148 kB
Dirty:              36 kB
Writeback:           0 kB
Mapped:           6044 kB
Slab:            13516 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 20:17:48 (client local time) WITH STATUS 0 IN 37.3723 SECONDS
stats: 17890 7 37.3723 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 675 variables and 60 constraints.
c After prepocess the problem consists of 675 variables and 60 constraints.
c preprocess terminated 0.261 s
c Initial Lower Bound: 0
c Lower Bound Elapsed time: 0.068
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 524288 @ 5.539
c NEW SOLUTION FOUND: 523776 @ 14.81
c NEW SOLUTION FOUND: 523264 @ 16.55
#### 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): 0.85 0.94 0.90 2/54 12344
Raw data (stat): 12344 (runsolver) R 12343 7475 7474 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833064247 1052672 99 4294967295 134512640 135381576 3221224496 3221219708 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+10.0008 s]
Raw data (loadavg): 0.87 0.94 0.90 2/54 12344
Raw data (stat): 12344 (bsolo_lpr_cuts) R 12343 7475 7474 0 -1 0 6294 0 0 0 978 19 0 0 25 0 1 0 833064247 9994240 1722 4294967295 134512640 134714508 3221224592 3221221660 1074831249 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2440 1722 1111 63 0 2377 0
vsize: 9760
[startup+20.001 s]
Raw data (loadavg): 0.89 0.94 0.91 2/54 12344
Raw data (stat): 12344 (bsolo_lpr_cuts) R 12343 7475 7474 0 -1 0 12231 0 0 0 1958 39 0 0 25 0 1 0 833064247 11108352 1980 4294967295 134512640 134714508 3221224592 3221222628 1077374177 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2712 1980 1111 63 0 2649 0
vsize: 10848
[startup+30.0016 s]
Raw data (loadavg): 0.91 0.94 0.91 2/54 12344
Raw data (stat): 12344 (bsolo_lpr_cuts) R 12343 7475 7474 0 -1 0 17229 0 0 0 2939 58 0 0 25 0 1 0 833064247 13348864 2564 4294967295 134512640 134714508 3221224592 3221222900 1077782939 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3259 2564 1111 63 0 3196 0
vsize: 13036
[startup+37.3954 s]
Raw data (loadavg): 0.92 0.95 0.91 1/53 12344
Raw data (stat): 12344 (bsolo_lpr_cuts) R 12343 7475 7474 0 -1 0 17229 0 0 0 2939 58 0 0 25 0 1 0 833064247 13348864 2564 4294967295 134512640 134714508 3221224592 3221222900 1077782939 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3259 2564 1111 63 0 3196 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 37.3951
CPU time (s): 37.3723
CPU user time (s): 36.6554
CPU system time (s): 0.716891
CPU usage (%): 99.939
Max. virtual memory (Kb): 13036
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####