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/plato.asu.edu/pub/fctp/normalized-mps-v2-20-10-ran10x12.opb
MD5SUM503b63cdbe2445afec2ea38c5efde5e4
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 4990860
Optimality of the best value was proved NO
Number of terms in the objective function 3720
Biggest coefficient in the objective function 5368709120
Number of bits for the biggest coefficient in the objective function 33
Sum of the numbers in the objective function 679702048135
Number of bits of the sum of numbers in the objective function 40
Biggest number in a constraint 5368709120
Number of bits of the biggest number in a constraint 33
Biggest sum of numbers in a constraint 679702048135
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1225.37
Number of variables3720
Total number of constraints142
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints142
Minimum length of a constraint31
Maximum length of a constraint360

Trace number 26248 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-05-24 14:57:23 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=14238 boxname=wulflinc12 idbench=1096 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  503b63cdbe2445afec2ea38c5efde5e4  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-ran10x12.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-ran10x12.opb
IDLAUNCH: 14238
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        920456 kB
Buffers:         35720 kB
Cached:          57348 kB
SwapCached:        568 kB
Active:          55528 kB
Inactive:        40020 kB
HighTotal:      131008 kB
HighFree:        69804 kB
LowTotal:       903652 kB
LowFree:        850652 kB
SwapTotal:     2097136 kB
SwapFree:      2096076 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5672 kB
Slab:            13036 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-24 14:57:26 (client local time) WITH STATUS 20 IN 2.17867 SECONDS
stats: 14238 7 2.17867 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Initial problem consists of 3720 variables and 154 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 2.162 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): 0.81 0.95 1.15 2/54 32622
Raw data (stat): 32622 (runsolver) R 32621 32284 32283 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 772905133 1052672 99 4294967295 134512640 135381576 3221224480 3221219696 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+2.18633 s]
Raw data (loadavg): 0.81 0.95 1.15 1/53 32622
Raw data (stat): 32622 (runsolver) R 32621 32284 32283 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 772905133 1052672 99 4294967295 134512640 135381576 3221224480 3221219696 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): 2.1857
CPU time (s): 2.17867
CPU user time (s): 2.09568
CPU system time (s): 0.082987
CPU usage (%): 99.6784
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####