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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-sierra.opb
MD5SUM4eeca712f5c43ba16697ebe3806a3a23
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 36989
Biggest coefficient in the objective function 40063152947200
Number of bits for the biggest coefficient in the objective function 46
Sum of the numbers in the objective function 712861332680300
Number of bits of the sum of numbers in the objective function 50
Biggest number in a constraint 40063152947200
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 712861332680300
Number of bits of the biggest sum of numbers50
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables38715
Total number of constraints3263
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 constraints3263
Minimum length of a constraint10
Maximum length of a constraint498

Trace number 9925

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-23 16:12:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8682 boxname=wulflinc17 idbench=478 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  4eeca712f5c43ba16697ebe3806a3a23  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-sierra.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-sierra.opb
IDLAUNCH: 8682
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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		: 451.161
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:        927588 kB
Buffers:         15848 kB
Cached:          72416 kB
SwapCached:          0 kB
Active:          47908 kB
Inactive:        43304 kB
HighTotal:      131008 kB
HighFree:        54208 kB
LowTotal:       903652 kB
LowFree:        873380 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10152 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:14:24 (client local time) WITH STATUS 0 IN 115.457 SECONDS
stats: 8682 7 115.457 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
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/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 21534673 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 373 2 364 364 0 9 0
[pid=8634] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-sierra.opb

[startup+10.0024 s]
Raw data (loadavg): 0.92 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 2546 0 0 0 992 6 0 0 25 0 1 0 21534673 9510912 1859 4294967295 134512640 135987407 3221224560 3221221872 134555859 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 2322 1859 364 364 0 1958 0
[pid=8634] vsize: 9288
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 9288

[startup+20.003 s]
Raw data (loadavg): 0.93 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 3033 0 0 0 1990 8 0 0 25 0 1 0 21534673 10727424 2338 4294967295 134512640 135987407 3221224560 3221221872 134555852 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 2619 2338 364 364 0 2255 0
[pid=8634] vsize: 10476
Current children cumulated CPU time (s) 19.98
Current children cumulated vsize (Kb) 10476

[startup+30.0036 s]
Raw data (loadavg): 0.94 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 6295 0 0 0 2981 17 0 0 25 0 1 0 21534673 20439040 4495 4294967295 134512640 135987407 3221224560 3221221952 134616297 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 4990 4495 364 364 0 4626 0
[pid=8634] vsize: 19960
Current children cumulated CPU time (s) 29.98
Current children cumulated vsize (Kb) 19960

[startup+40.0042 s]
Raw data (loadavg): 0.95 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 35206 0 0 0 3910 85 0 0 25 0 1 0 21534673 131260416 23585 4294967295 134512640 135987407 3221224560 3221200684 135500012 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 32046 23585 364 364 0 31682 0
[pid=8634] vsize: 128184
Current children cumulated CPU time (s) 39.95
Current children cumulated vsize (Kb) 128184

[startup+50.0038 s]
Raw data (loadavg): 0.96 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 59483 0 0 0 4847 147 0 0 25 0 1 0 21534673 238460928 36800 4294967295 134512640 135987407 3221224560 3221201728 134856487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 58218 36800 364 364 0 57854 0
[pid=8634] vsize: 232872
Current children cumulated CPU time (s) 49.94
Current children cumulated vsize (Kb) 232872

[startup+60.0044 s]
Raw data (loadavg): 0.96 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 98801 0 0 0 5758 234 0 0 25 0 1 0 21534673 314200064 53903 4294967295 134512640 135987407 3221224560 3221149008 134861027 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 76709 53903 364 364 0 76345 0
[pid=8634] vsize: 306836
Current children cumulated CPU time (s) 59.92
Current children cumulated vsize (Kb) 306836

[startup+70.005 s]
Raw data (loadavg): 0.97 0.94 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 116854 0 0 0 6714 277 0 0 25 0 1 0 21534673 321802240 71668 4294967295 134512640 135987407 3221224560 3221150016 134877884 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 78565 71668 364 364 0 78201 0
[pid=8634] vsize: 314260
Current children cumulated CPU time (s) 69.91
Current children cumulated vsize (Kb) 314260

[startup+80.0066 s]
Raw data (loadavg): 0.97 0.95 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 181429 0 0 0 7571 417 0 0 25 0 1 0 21534673 549191680 92064 4294967295 134512640 135987407 3221224560 3221165760 134556288 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 134080 92064 364 364 0 133716 0
[pid=8634] vsize: 536320
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 536320

[startup+90.0072 s]
Raw data (loadavg): 0.98 0.95 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 196409 0 0 0 8530 458 0 0 25 0 1 0 21534673 586936320 106794 4294967295 134512640 135987407 3221224560 3221178504 134855044 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 143295 106794 364 364 0 142931 0
[pid=8634] vsize: 573180
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 573180

[startup+100.007 s]
Raw data (loadavg): 0.98 0.95 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 213543 0 0 0 9487 500 0 0 25 0 1 0 21534673 591675392 123644 4294967295 134512640 135987407 3221224560 3221201408 134878078 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 144452 123644 364 364 0 144088 0
[pid=8634] vsize: 577808
Current children cumulated CPU time (s) 99.87
Current children cumulated vsize (Kb) 577808

[startup+110.007 s]
Raw data (loadavg): 0.98 0.95 0.92 2/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) R 8633 8634 4060 0 -1 0 227421 0 0 0 10445 541 0 0 25 0 1 0 21534673 646062080 137289 4294967295 134512640 135987407 3221224560 3221208016 134855001 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8634/statm): 157730 137289 364 364 0 157366 0
[pid=8634] vsize: 630920
Current children cumulated CPU time (s) 109.86
Current children cumulated vsize (Kb) 630920



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+115.248 s]
Raw data (loadavg): 0.98 0.95 0.92 1/55 8634
Raw data (/proc/8634/stat): 8634 (pb2sat) T 8633 8634 4060 0 -1 0 241096 0 0 0 10933 576 0 0 25 0 1 0 21534673 943849472 150659 4294967295 134512640 135987407 3221224560 3221165132 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8634/statm): 230432 150659 364 364 0 230068 0
[pid=8634] vsize: 921728
Current children cumulated CPU time (s) 115.09
Current children cumulated vsize (Kb) 921728

Sending SIGTERM to -8634
Sleeping 2 seconds
Sending SIGKILL to -8634
One traced child (pid=8634) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 117.562
CPU time (s): 115.457
CPU user time (s): 109.386
CPU system time (s): 6.07108
CPU usage (%): 98.2098
Max. virtual memory (cumulated for all children) (Kb): 921728

Verifier Data

ERROR: no interpretation found !