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/miplib2003/normalized-mps-v2-13-7-atlanta-ip.opb
MD5SUM5c887381904b4849f12f155c2e7ab40c
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 31296
Biggest coefficient in the objective function 1700000000000
Number of bits for the biggest coefficient in the objective function 41
Sum of the numbers in the objective function 81421012358779
Number of bits of the sum of numbers in the objective function 47
Biggest number in a constraint 1700000000000
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 81421012358779
Number of bits of the biggest sum of numbers47
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.841871
Number of variables71516
Total number of constraints70354
Number of constraints which are clauses2311
Number of constraints which are cardinality constraints (but not clauses)47534
Number of constraints which are nor clauses,nor cardinality constraints20509
Minimum length of a constraint1
Maximum length of a constraint2790

Trace number 18750 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc18 THE 2005-04-21 16:38:42 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=17465 boxname=wulflinc18 idbench=1344 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  5c887381904b4849f12f155c2e7ab40c  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-atlanta-ip.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-atlanta-ip.opb
IDLAUNCH: 17465
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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		: 451.177
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:        841532 kB
Buffers:          2776 kB
Cached:         166732 kB
SwapCached:        764 kB
Active:          64120 kB
Inactive:       107352 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        841280 kB
SwapTotal:     2097892 kB
SwapFree:      2096152 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5100 kB
Slab:            15856 kB
Committed_AS:    63780 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 16:38:44 (client local time) WITH STATUS 20 IN 0.841871 SECONDS
stats: 17465 7 0.841871 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-atlanta-ip.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.248962
#### 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): 0.62 0.88 0.89 2/55 2019
Raw data (stat): 2019 (runsolver) R 2018 20024 20023 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 546574130 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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+0.844123 s]
Raw data (loadavg): 0.62 0.88 0.89 1/54 2019
Raw data (stat): 2019 (runsolver) R 2018 20024 20023 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 546574130 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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): 0.843825
CPU time (s): 0.841871
CPU user time (s): 0.704892
CPU system time (s): 0.136979
CPU usage (%): 99.7684
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####