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-fast0507.opb
MD5SUM38504d32a17a57a658eee171614b901e
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 324
Optimality of the best value was proved NO
Number of terms in the objective function 63009
Biggest coefficient in the objective function 2
Number of bits for the biggest coefficient in the objective function 2
Sum of the numbers in the objective function 122425
Number of bits of the sum of numbers in the objective function 17
Biggest number in a constraint 2
Number of bits of the biggest number in a constraint 2
Biggest sum of numbers in a constraint 122425
Number of bits of the biggest sum of numbers17
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1189.22
Number of variables63009
Total number of constraints63516
Number of constraints which are clauses507
Number of constraints which are cardinality constraints (but not clauses)63009
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint7753

Trace number 3789

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-19 03:04:10 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1736 boxname=wulflinc30 idbench=564 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  38504d32a17a57a658eee171614b901e  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-fast0507.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-fast0507.opb
IDLAUNCH: 1736
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        895108 kB
Buffers:         32040 kB
Cached:          76864 kB
SwapCached:        780 kB
Active:          56116 kB
Inactive:        55468 kB
HighTotal:      131008 kB
HighFree:        51072 kB
LowTotal:       903652 kB
LowFree:        844036 kB
SwapTotal:     2097892 kB
SwapFree:      2096636 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            22184 kB
Committed_AS:    64172 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:04:27 (client local time) WITH STATUS 0 IN 16.6695 SECONDS
stats: 1736 7 16.6695 0

Solver Data

c Decisions:	0
c Implications:	7
c RUNTIME:	16.2475s
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/18237/stat): 18237 (galena) R 18236 18237 5245 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1846498722 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/18237/statm): 248 2 241 241 0 7 0
[pid=18237] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-fast0507.opb

[startup+10.0035 s]
Raw data (loadavg): 0.58 0.84 0.94 2/56 18237
Raw data (/proc/18237/stat): 18237 (galena) R 18236 18237 5245 0 -1 0 2411 0 0 0 985 10 0 0 25 0 1 0 1846498722 8298496 1805 4294967295 134512640 135412752 3221224560 3221222172 135039722 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/18237/statm): 2026 1805 241 241 0 1785 0
[pid=18237] vsize: 8104
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 8104
One traced child (pid=18237) exited with status: 0
All traced children have exited ! Game is over.

Child status: 0
Real time (s): 16.7438
CPU time (s): 16.6695
CPU user time (s): 16.4155
CPU system time (s): 0.253961
CPU usage (%): 99.5561
Max. virtual memory (cumulated for all children) (Kb): 8104

Verifier Data

ERROR: no interpretation found !