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-misc04.opb
MD5SUM7b42190d864979953c47e5a92736f365
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 31
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 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 43188899594881916928
Number of bits of the biggest number in a constraint 66
Biggest sum of numbers in a constraint 133861748414790074368
Number of bits of the biggest sum of numbers67
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark4.12137
Number of variables146276
Total number of constraints1755
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)45
Number of constraints which are nor clauses,nor cardinality constraints1710
Minimum length of a constraint1
Maximum length of a constraint5071

Trace number 16940 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-04-21 09:24:37 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11979 boxname=wulflinc20 idbench=922 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  7b42190d864979953c47e5a92736f365  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-misc04.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-misc04.opb
IDLAUNCH: 11979
/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:        541496 kB
Buffers:         23652 kB
Cached:         444760 kB
SwapCached:        516 kB
Active:         113304 kB
Inactive:       357116 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        541244 kB
SwapTotal:     2097892 kB
SwapFree:      2096480 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5116 kB
Slab:            16916 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 09:24:52 (client local time) WITH STATUS 20 IN 14.5328 SECONDS
stats: 11979 7 14.5328 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-misc04.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.435934
#### 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): 0.87 0.97 0.98 2/54 3386
Raw data (stat): 3386 (runsolver) R 3385 27565 27564 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 543977321 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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+10.0003 s]
Raw data (loadavg): 0.89 0.97 0.98 2/54 3386
Raw data (stat): 3386 (PBS4) R 3385 27565 27564 0 -1 0 7556 0 0 0 979 20 0 0 25 0 1 0 543977321 31522816 7325 4294967295 134512640 135450300 3221224624 3221157216 134844366 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 7696 7325 231 231 0 7465 0
vsize: 30784
[startup+14.5338 s]
Raw data (loadavg): 0.89 0.97 0.98 1/53 3386
Raw data (stat): 3386 (PBS4) R 3385 27565 27564 0 -1 0 7556 0 0 0 979 20 0 0 25 0 1 0 543977321 31522816 7325 4294967295 134512640 135450300 3221224624 3221157216 134844366 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 7696 7325 231 231 0 7465 0
vsize: 0

Child status: 20
Real time (s): 14.5333
CPU time (s): 14.5328
CPU user time (s): 14.1988
CPU system time (s): 0.333949
CPU usage (%): 99.9966
Max. virtual memory (Kb): 30784
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####