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).
    Note that some very long lines in this section may be truncated by your web browser !
  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

Namemps-v2-20-10/MIPLIB/miplib2003/normalized-mps-v2-20-10-nw04.opb
MD5SUM5a18ff1f45b144b201f1f80233dc9b6b
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 30407
Optimality of the best value was proved NO
Number of terms in the objective function 87482
Biggest coefficient in the objective function 5220
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 120189580
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 5220
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 120189580
Number of bits of the biggest sum of numbers27
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1204.97
Number of variables87482
Total number of constraints87518
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)87518
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint42032

Trace number 3816

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-19 03:04:55 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1759 boxname=wulflinc3 idbench=587 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  5a18ff1f45b144b201f1f80233dc9b6b  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-nw04.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-nw04.opb
IDLAUNCH: 1759
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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:        893852 kB
Buffers:         35292 kB
Cached:          78568 kB
SwapCached:        856 kB
Active:          81916 kB
Inactive:        34596 kB
HighTotal:      131008 kB
HighFree:        50960 kB
LowTotal:       903652 kB
LowFree:        842892 kB
SwapTotal:     2097136 kB
SwapFree:      2095712 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5720 kB
Slab:            18616 kB
Committed_AS:    72360 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-19 03:05:22 (client local time) WITH STATUS 0 IN 26.276 SECONDS
stats: 1759 7 26.276 0

Solver Data

c Decisions:	0
c Implications:	0
c RUNTIME:	25.5421s
s UNKNOWN

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/24288/stat): 24288 (galena) R 24287 24288 31915 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1788276261 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/24288/statm): 248 2 241 241 0 7 0
[pid=24288] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-nw04.opb

[startup+10.0026 s]
Raw data (loadavg): 0.65 0.89 0.96 2/56 24288
Raw data (/proc/24288/stat): 24288 (galena) R 24287 24288 31915 0 -1 0 3442 0 0 0 982 14 0 0 25 0 1 0 1788276261 11091968 2274 4294967295 134512640 135412752 3221224560 3221222208 134672331 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/24288/statm): 2708 2274 241 241 0 2467 0
[pid=24288] vsize: 10832
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 10832

[startup+20.0034 s]
Raw data (loadavg): 0.70 0.89 0.96 2/56 24288
Raw data (/proc/24288/stat): 24288 (galena) R 24287 24288 31915 0 -1 0 6141 0 0 0 1969 24 0 0 25 0 1 0 1788276261 18358272 4039 4294967295 134512640 135412752 3221224560 3221222440 134672561 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/24288/statm): 4482 4039 241 241 0 4241 0
[pid=24288] vsize: 17928
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 17928
One traced child (pid=24288) exited with status: 0
All traced children have exited ! Game is over.

Child status: 0
Real time (s): 26.3662
CPU time (s): 26.276
CPU user time (s): 25.8121
CPU system time (s): 0.463929
CPU usage (%): 99.6581
Max. virtual memory (cumulated for all children) (Kb): 17928

Verifier Data

ERROR: no interpretation found !