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/miplib3/normalized-mps-v2-13-7-dcmulti.opb
MD5SUM28123830d5f7e3646d18978bb347487c
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 9505
Biggest coefficient in the objective function 697303040
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 66656504525
Number of bits of the sum of numbers in the objective function 36
Biggest number in a constraint 697303040
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 66656504525
Number of bits of the biggest sum of numbers36
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.085986
Number of variables9535
Total number of constraints365
Number of constraints which are clauses27
Number of constraints which are cardinality constraints (but not clauses)80
Number of constraints which are nor clauses,nor cardinality constraints258
Minimum length of a constraint1
Maximum length of a constraint280

Trace number 27102 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc13 THE 2005-05-24 19:33:10 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=18281 boxname=wulflinc13 idbench=1407 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  28123830d5f7e3646d18978bb347487c  /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-13-7-dcmulti.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-13-7-dcmulti.opb
IDLAUNCH: 18281
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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		: 451.242
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:        907344 kB
Buffers:          1740 kB
Cached:         105164 kB
SwapCached:        604 kB
Active:          20580 kB
Inactive:        88952 kB
HighTotal:      131008 kB
HighFree:        21812 kB
LowTotal:       903652 kB
LowFree:        885532 kB
SwapTotal:     2097136 kB
SwapFree:      2096148 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6144 kB
Slab:            12104 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-24 19:33:26 (client local time) WITH STATUS 20 IN 15.0357 SECONDS
stats: 18281 7 15.0357 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Initial problem consists of 9535 variables and 368 constraints.
c After prepocess the problem consists of 7884 variables and 367 constraints.
c preprocess terminated 14.976 s
c Initial Lower Bound: 1283051
c Lower Bound Elapsed time: 0
c Use computed LB before first solution.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 15.011 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 0.95 0.91 2/54 4391
Raw data (stat): 4391 (runsolver) R 4390 1269 1268 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 774573155 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+10.0003 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 4391
Raw data (stat): 4391 (bsolo_mis) R 4390 1269 1268 0 -1 0 6678 0 0 0 984 15 0 0 25 0 1 0 774573155 40939520 6656 4294967295 134512640 134714540 3221224592 3221223248 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9995 6656 1111 63 0 9932 0
vsize: 39980
[startup+15.0459 s]
Raw data (loadavg): 0.93 0.96 0.91 1/53 4391
Raw data (stat): 4391 (bsolo_mis) R 4390 1269 1268 0 -1 0 6678 0 0 0 984 15 0 0 25 0 1 0 774573155 40939520 6656 4294967295 134512640 134714540 3221224592 3221223248 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9995 6656 1111 63 0 9932 0
vsize: 0

Child status: 20
Real time (s): 15.0453
CPU time (s): 15.0357
CPU user time (s): 14.7938
CPU system time (s): 0.241963
CPU usage (%): 99.9364
Max. virtual memory (Kb): 39980
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####