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-bnl2.opb
MD5SUM25ba81ffd6b61270ad99e5bd6f700914
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 33700
Biggest coefficient in the objective function 314887372800
Number of bits for the biggest coefficient in the objective function 39
Sum of the numbers in the objective function 11048951166825
Number of bits of the sum of numbers in the objective function 44
Biggest number in a constraint 314887372800
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 11048951166825
Number of bits of the biggest sum of numbers44
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark5.2412
Number of variables69780
Total number of constraints2280
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 constraints2280
Minimum length of a constraint20
Maximum length of a constraint1640

Trace number 6421

Launcher Data

LAUNCH ON wulflinc12 THE 2005-09-20 06:44:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4313 boxname=wulflinc12 idbench=797 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  25ba81ffd6b61270ad99e5bd6f700914  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-bnl2.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-bnl2.opb
IDLAUNCH: 4313
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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	: 2
cpu MHz		: 451.091
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:        894036 kB
Buffers:         33492 kB
Cached:          76380 kB
SwapCached:        492 kB
Active:          59660 kB
Inactive:        52712 kB
HighTotal:      131008 kB
HighFree:        52472 kB
LowTotal:       903652 kB
LowFree:        841564 kB
SwapTotal:     2097136 kB
SwapFree:      2096072 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5892 kB
Slab:            22432 kB
Committed_AS:    64128 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 06:45:42 (client local time) WITH STATUS 20 IN 73.5288 SECONDS
stats: 4313 7 73.5288 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-bnl2.opb ......
s UNSATISFIABLE
c Done, CPU Time=2.74958

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/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 18 0 0 0 0 0 0 0 20 0 1 0 1798234722 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/12753/statm): 239 2 232 232 0 7 0
[pid=12753] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-bnl2.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-bnl2.opb

[startup+10.0027 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 3244 0 0 0 988 9 0 0 25 0 1 0 1798234722 13869056 2998 4294967295 134512640 135450776 3221224560 3221223072 134599243 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/12753/statm): 3386 2998 232 232 0 3154 0
[pid=12753] vsize: 13544
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 13544

[startup+20.0036 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 3376 0 0 0 1988 10 0 0 25 0 1 0 1798234722 14409728 3130 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/12753/statm): 3518 3130 232 232 0 3286 0
[pid=12753] vsize: 14072
Current children cumulated CPU time (s) 19.98
Current children cumulated vsize (Kb) 14072

[startup+30.0034 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 3376 0 0 0 2988 10 0 0 25 0 1 0 1798234722 14409728 3130 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/12753/statm): 3518 3130 232 232 0 3286 0
[pid=12753] vsize: 14072
Current children cumulated CPU time (s) 29.98
Current children cumulated vsize (Kb) 14072

[startup+40.0042 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 3376 0 0 0 3988 10 0 0 25 0 1 0 1798234722 14409728 3130 4294967295 134512640 135450776 3221224560 3221223072 134600357 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/12753/statm): 3518 3130 232 232 0 3286 0
[pid=12753] vsize: 14072
Current children cumulated CPU time (s) 39.98
Current children cumulated vsize (Kb) 14072

[startup+50.0051 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 3376 0 0 0 4988 10 0 0 25 0 1 0 1798234722 14409728 3130 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/12753/statm): 3518 3130 232 232 0 3286 0
[pid=12753] vsize: 14072
Current children cumulated CPU time (s) 49.98
Current children cumulated vsize (Kb) 14072

[startup+60.0049 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 5080 0 0 0 5983 14 0 0 25 0 1 0 1798234722 16490496 3646 4294967295 134512640 135450776 3221224560 3221223072 134599257 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/12753/statm): 4026 3646 232 232 0 3794 0
[pid=12753] vsize: 16104
Current children cumulated CPU time (s) 59.97
Current children cumulated vsize (Kb) 16104

[startup+70.0048 s]
Raw data (loadavg): 1.00 0.98 0.95 2/56 12753
Raw data (/proc/12753/stat): 12753 (PBS4) R 12752 12753 8263 0 -1 0 7711 0 0 0 6970 24 0 0 25 0 1 0 1798234722 25419776 5749 4294967295 134512640 135450776 3221224560 3221223136 134675491 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/12753/statm): 6206 5749 232 232 0 5974 0
[pid=12753] vsize: 24824
Current children cumulated CPU time (s) 69.94
Current children cumulated vsize (Kb) 24824
One traced child (pid=12753) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 73.5912
CPU time (s): 73.5288
CPU user time (s): 73.2239
CPU system time (s): 0.304953
CPU usage (%): 99.9153
Max. virtual memory (cumulated for all children) (Kb): 24824

Verifier Data

ERROR: no interpretation found !