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-fixnet6.opb
MD5SUM643c61a2fa79f4946ef3ab8d08d00c03
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 48386177
Optimality of the best value was proved NO
Number of terms in the objective function 11714
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 513431911800
Number of bits of the sum of numbers in the objective function 39
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 513431911800
Number of bits of the biggest sum of numbers39
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1260.33
Number of variables14036
Total number of constraints978
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)378
Number of constraints which are nor clauses,nor cardinality constraints600
Minimum length of a constraint1
Maximum length of a constraint1523

Trace number 26623 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-05-24 16:44:58 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11844 boxname=wulflinc6 idbench=912 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  643c61a2fa79f4946ef3ab8d08d00c03  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-fixnet6.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-fixnet6.opb
IDLAUNCH: 11844
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
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		: 451.042
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:        535148 kB
Buffers:          6844 kB
Cached:         461676 kB
SwapCached:        408 kB
Active:          19740 kB
Inactive:       451104 kB
HighTotal:      131008 kB
HighFree:        30940 kB
LowTotal:       903652 kB
LowFree:        504208 kB
SwapTotal:     2097136 kB
SwapFree:      2096040 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5704 kB
Slab:            22928 kB
Committed_AS:    63732 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-24 16:45:28 (client local time) WITH STATUS 20 IN 28.9776 SECONDS
stats: 11844 7 28.9776 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 14036 variables and 634 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 28.947 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 0.98 0.99 2/54 26878
Raw data (stat): 26878 (runsolver) R 26877 25568 25567 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 773556643 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 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+10.0007 s]
Raw data (loadavg): 0.93 0.98 0.99 2/54 26878
Raw data (stat): 26878 (bsolo_lpr) R 26877 25568 25567 0 -1 0 3287 0 0 0 990 8 0 0 25 0 1 0 773556643 26386432 3211 4294967295 134512640 134714508 3221224592 3221222820 1077414363 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 6442 3211 1111 63 0 6379 0
vsize: 25768
[startup+20.0014 s]
Raw data (loadavg): 0.94 0.98 0.99 2/54 26878
Raw data (stat): 26878 (bsolo_lpr) R 26877 25568 25567 0 -1 0 7174 0 0 0 1980 17 0 0 25 0 1 0 773556643 42262528 7098 4294967295 134512640 134714508 3221224592 3221222820 1077414385 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 10318 7098 1111 63 0 10255 0
vsize: 41272
[startup+29.0075 s]
Raw data (loadavg): 0.95 0.98 0.99 1/53 26878
Raw data (stat): 26878 (bsolo_lpr) R 26877 25568 25567 0 -1 0 7174 0 0 0 1980 17 0 0 25 0 1 0 773556643 42262528 7098 4294967295 134512640 134714508 3221224592 3221222820 1077414385 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 10318 7098 1111 63 0 10255 0
vsize: 0

Child status: 20
Real time (s): 29.0048
CPU time (s): 28.9776
CPU user time (s): 28.6706
CPU system time (s): 0.306953
CPU usage (%): 99.9061
Max. virtual memory (Kb): 41272
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####