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-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-fixnet4.opb
MD5SUMc6a26aa8aefc43a120ecaff31b506c53
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 9745597
Optimality of the best value was proved NO
Number of terms in the objective function 9638
Biggest coefficient in the objective function 5242880
Number of bits for the biggest coefficient in the objective function 23
Sum of the numbers in the objective function 2427493442
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint 5242880
Number of bits of the biggest number in a constraint 23
Biggest sum of numbers in a constraint 2427493442
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1240.35
Number of variables9890
Total number of constraints978
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)378
Number of constraints which are nor clauses,nor cardinality constraints600
Minimum length of a constraint1
Maximum length of a constraint1072

Trace number 5576

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-20 01:19:56 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2066 boxname=wulflinc30 idbench=894 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  c6a26aa8aefc43a120ecaff31b506c53  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-fixnet4.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-fixnet4.opb
IDLAUNCH: 2066
/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:        880936 kB
Buffers:         24128 kB
Cached:          99968 kB
SwapCached:        752 kB
Active:          28624 kB
Inactive:        98108 kB
HighTotal:      131008 kB
HighFree:        34076 kB
LowTotal:       903652 kB
LowFree:        846860 kB
SwapTotal:     2097892 kB
SwapFree:      2096620 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5716 kB
Slab:            21384 kB
Committed_AS:    64304 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 01:19:58 (client local time) WITH STATUS 20 IN 1.51877 SECONDS
stats: 2066 7 1.51877 20

Solver Data

c Decisions:	0
c Implications:	5227
c RUNTIME:	1.45078s
s UNSATISFIABLE

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/29894/stat): 29894 (galena) T 29893 29894 5245 0 -1 0 27 0 0 0 0 0 0 0 22 0 1 0 1854514310 1015808 10 4294967295 134512640 135412752 3221224560 3221223996 135072525 0 0 5 0 3222434794 0 0 17 0 0 0
Raw data (/proc/29894/statm): 248 10 241 241 0 7 0
[pid=29894] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-fixnet4.opb
One traced child (pid=29894) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 1.53102
CPU time (s): 1.51877
CPU user time (s): 1.47278
CPU system time (s): 0.045993
CPU usage (%): 99.1999
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

ERROR: no interpretation found !