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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-lotfi.opb
MD5SUMd0cc302a544eb359eec19c9f7d39cc8a
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 240
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 8589934584
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 5368709120000000000
Number of bits of the biggest number in a constraint 63
Biggest sum of numbers in a constraint 40952512476384968704
Number of bits of the biggest sum of numbers66
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.158974
Number of variables9240
Total number of constraints153
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 constraints153
Minimum length of a constraint30
Maximum length of a constraint3990

Trace number 17285 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-04-21 10:12:56 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=10968 boxname=wulflinc20 idbench=844 idsolver=9 numberseed=0
MD5SUM SOLVER: daf345f6fbf228671abfac48013b9cac  /oldhome/oroussel/solvers/sat4jPseudo.jar
MD5SUM BENCH:  d0cc302a544eb359eec19c9f7d39cc8a  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-lotfi.opb
REAL COMMAND:  java -server -Xms650M -Xmx650M -jar /oldhome/oroussel/solvers/sat4jPseudo.jar /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-lotfi.opb
IDLAUNCH: 10968
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.215
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		: 451.215
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:        405624 kB
Buffers:         24872 kB
Cached:         579608 kB
SwapCached:        516 kB
Active:         121416 kB
Inactive:       484972 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        405372 kB
SwapTotal:     2097892 kB
SwapFree:      2096480 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5116 kB
Slab:            16964 kB
Committed_AS:    63592 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 10:13:28 (client local time) WITH STATUS 20 IN 32.706 SECONDS
stats: 10968 7 32.706 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c solving /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-lotfi.opb
c reading problem 
c [nbvar=9240]
c [nbconstr=153]
c time 31.02
c #vars     9240
c #clauses  241
c starts	: 0
c conflicts	: 0
c decisions	: 0
c propagations	: 0
c inspects	: 0
c learned literals	: 0
c learned binary clauses	: 0
c learned ternary clauses	: 0
c learned clauses	: 0
c root simplifications	: 0
c Total CPU time (ms) : 31.129
s UNSATISFIABLE
#### 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): 0.58 0.81 0.91 2/54 5210
Raw data (stat): 5210 (runsolver) R 5209 27565 27564 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 544267274 1052672 99 4294967295 134512640 135381576 3221224432 3221219680 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+10.0018 s]
Raw data (loadavg): 0.79 0.85 0.92 2/63 5219
Raw data (stat): 5210 (java) R 5209 27565 27564 0 -1 0 18000 0 1 0 849 43 0 0 24 0 10 0 544267274 856367104 20003 4294967295 134512640 134569956 3221224400 3221214524 1076461328 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209074 20003 13073 16 0 209058 0
vsize: 836296
[startup+20.0049 s]
Raw data (loadavg): 0.82 0.85 0.92 2/63 5219
Raw data (stat): 5210 (java) S 5209 27565 27564 0 -1 0 18001 0 1 0 1702 43 0 0 25 0 10 0 544267274 856301568 20927 4294967295 134512640 134569956 3221224400 3221213432 1073943035 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209058 20927 13073 16 0 209042 0
vsize: 836232
[startup+30.0056 s]
Raw data (loadavg): 0.85 0.86 0.92 2/63 5219
Raw data (stat): 5210 (java) R 5209 27565 27564 0 -1 0 18001 0 1 0 2579 44 0 0 25 0 10 0 544267274 856301568 21587 4294967295 134512640 134569956 3221224400 3221214384 1079276148 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209058 21587 13073 16 0 209042 0
vsize: 836232
[startup+31.8756 s]
Raw data (loadavg): 0.85 0.86 0.92 1/53 5219
Raw data (stat): 5210 (java) R 5209 27565 27564 0 -1 0 18001 0 1 0 2579 44 0 0 25 0 10 0 544267274 856301568 21587 4294967295 134512640 134569956 3221224400 3221214384 1079276148 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209058 21587 13073 16 0 209042 0
vsize: 0

Child status: 20
Real time (s): 31.8753
CPU time (s): 32.706
CPU user time (s): 32.1831
CPU system time (s): 0.52292
CPU usage (%): 102.606
Max. virtual memory (Kb): 836296
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####