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/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-d6cube.opb
MD5SUM889599bea53ff906bd4dd516c552c027
Bench Categoryoptimization, medium integers (OPTMEDINT)
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 123680
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 6484387800
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 188743680
Number of bits of the biggest number in a constraint 28
Biggest sum of numbers in a constraint 10767194085
Number of bits of the biggest sum of numbers34
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark28.7566
Number of variables123680
Total number of constraints404
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints404
Minimum length of a constraint20
Maximum length of a constraint123680

Trace number 5504

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-20 01:18:05 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1977 boxname=wulflinc27 idbench=805 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  889599bea53ff906bd4dd516c552c027  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-d6cube.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-d6cube.opb
IDLAUNCH: 1977
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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		: 451.169
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:        916536 kB
Buffers:         16156 kB
Cached:          71968 kB
SwapCached:        752 kB
Active:          39556 kB
Inactive:        51204 kB
HighTotal:      131008 kB
HighFree:        56980 kB
LowTotal:       903652 kB
LowFree:        859556 kB
SwapTotal:     2097892 kB
SwapFree:      2096628 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5728 kB
Slab:            21596 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 01:18:35 (client local time) WITH STATUS 20 IN 28.7566 SECONDS
stats: 1977 7 28.7566 20

Solver Data

c Decisions:	0
c Implications:	1
c RUNTIME:	27.7398s
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/23037/stat): 23037 (galena) R 23036 23037 28974 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 1854500215 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/23037/statm): 248 2 241 241 0 7 0
[pid=23037] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-d6cube.opb

[startup+10.0033 s]
Raw data (loadavg): 0.67 0.78 0.89 2/56 23037
Raw data (/proc/23037/stat): 23037 (galena) R 23036 23037 28974 0 -1 0 4048 0 0 0 981 16 0 0 25 0 1 0 1854500215 12472320 2749 4294967295 134512640 135412752 3221224560 3221222400 134672324 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/23037/statm): 3045 2749 241 241 0 2804 0
[pid=23037] vsize: 12180
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 12180

[startup+20.0042 s]
Raw data (loadavg): 0.72 0.79 0.89 2/56 23037
Raw data (/proc/23037/stat): 23037 (galena) R 23036 23037 28974 0 -1 0 8176 0 0 0 1962 28 0 0 25 0 1 0 1854500215 18698240 4336 4294967295 134512640 135412752 3221224560 3221222496 134612332 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/23037/statm): 4565 4336 241 241 0 4324 0
[pid=23037] vsize: 18260
Current children cumulated CPU time (s) 19.9
Current children cumulated vsize (Kb) 18260
One traced child (pid=23037) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 28.8827
CPU time (s): 28.7566
CPU user time (s): 28.0487
CPU system time (s): 0.707892
CPU usage (%): 99.5634
Max. virtual memory (cumulated for all children) (Kb): 18260

Verifier Data

ERROR: no interpretation found !