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-greenbea.opb
MD5SUM9328ce67cb4db3dffdeb7eebb9aea072
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 15205
Biggest coefficient in the objective function 536870912000000
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 11303756896327816
Number of bits of the sum of numbers in the objective function 54
Biggest number in a constraint 536870912000000
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 24454743822989865
Number of bits of the biggest sum of numbers55
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables155427
Total number of constraints2675
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 constraints2675
Minimum length of a constraint11
Maximum length of a constraint7267

Trace number 9886

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-23 16:06:38 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8639 boxname=wulflinc21 idbench=435 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  9328ce67cb4db3dffdeb7eebb9aea072  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-greenbea.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-greenbea.opb
IDLAUNCH: 8639
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.188
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		: 451.188
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:        906180 kB
Buffers:         13544 kB
Cached:          96616 kB
SwapCached:          0 kB
Active:          70580 kB
Inactive:        42444 kB
HighTotal:      131008 kB
HighFree:        30128 kB
LowTotal:       903652 kB
LowFree:        876052 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             9840 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:08:19 (client local time) WITH STATUS 0 IN 98.876 SECONDS
stats: 8639 7 98.876 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/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 18 0 0 0 0 0 0 0 25 0 1 0 21496672 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8875/statm): 373 2 364 364 0 9 0
[pid=8875] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-greenbea.opb

[startup+10.0028 s]
Raw data (loadavg): 0.93 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 15175 0 0 0 956 42 0 0 25 0 1 0 21496672 46284800 9596 4294967295 134512640 135987407 3221224560 3221121408 134864424 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8875/statm): 11300 9596 364 364 0 10936 0
[pid=8875] vsize: 45200
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 45200

[startup+20.0035 s]
Raw data (loadavg): 0.94 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 49865 0 0 0 1882 114 0 0 25 0 1 0 21496672 164319232 27546 4294967295 134512640 135987407 3221224560 3221204000 134877726 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 40117 27546 364 364 0 39753 0
[pid=8875] vsize: 160468
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 160468

[startup+30.0032 s]
Raw data (loadavg): 0.95 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 82286 0 0 0 2817 174 0 0 25 0 1 0 21496672 250073088 50023 4294967295 134512640 135987407 3221224560 3221212924 134669203 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 61053 50023 364 364 0 60689 0
[pid=8875] vsize: 244212
Current children cumulated CPU time (s) 29.91
Current children cumulated vsize (Kb) 244212

[startup+40.0039 s]
Raw data (loadavg): 0.96 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 106353 0 0 0 3768 223 0 0 25 0 1 0 21496672 338026496 61588 4294967295 134512640 135987407 3221224560 3221209168 134877936 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 82526 61588 364 364 0 82162 0
[pid=8875] vsize: 330104
Current children cumulated CPU time (s) 39.91
Current children cumulated vsize (Kb) 330104

[startup+50.0045 s]
Raw data (loadavg): 0.96 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 120140 0 0 0 4741 250 0 0 25 0 1 0 21496672 342835200 75126 4294967295 134512640 135987407 3221224560 3221209864 135486800 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 83700 75126 364 364 0 83336 0
[pid=8875] vsize: 334800
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 334800

[startup+60.0052 s]
Raw data (loadavg): 0.97 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 160249 0 0 0 5658 330 0 0 25 0 1 0 21496672 470319104 95621 4294967295 134512640 135987407 3221224560 3221203264 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 114824 95621 364 364 0 114460 0
[pid=8875] vsize: 459296
Current children cumulated CPU time (s) 59.88
Current children cumulated vsize (Kb) 459296

[startup+70.0059 s]
Raw data (loadavg): 0.97 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 196983 0 0 0 6582 405 0 0 25 0 1 0 21496672 574435328 107555 4294967295 134512640 135987407 3221224560 3221213872 134878060 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 140243 107555 364 364 0 139879 0
[pid=8875] vsize: 560972
Current children cumulated CPU time (s) 69.87
Current children cumulated vsize (Kb) 560972

[startup+80.0056 s]
Raw data (loadavg): 0.98 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 208266 0 0 0 7558 430 0 0 25 0 1 0 21496672 610648064 118631 4294967295 134512640 135987407 3221224560 3221183324 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 149084 118631 364 364 0 148720 0
[pid=8875] vsize: 596336
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 596336

[startup+90.0053 s]
Raw data (loadavg): 0.98 0.95 0.94 2/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) R 8874 8875 4059 0 -1 0 225281 0 0 0 8525 461 0 0 25 0 1 0 21496672 627073024 135403 4294967295 134512640 135987407 3221224560 3221188060 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 153094 135403 364 364 0 152730 0
[pid=8875] vsize: 612376
Current children cumulated CPU time (s) 89.86
Current children cumulated vsize (Kb) 612376



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+98.6779 s]
Raw data (loadavg): 0.98 0.95 0.94 1/55 8875
Raw data (/proc/8875/stat): 8875 (pb2sat) T 8874 8875 4059 0 -1 0 246681 0 0 0 9349 502 0 0 25 0 1 0 21496672 943800320 156433 4294967295 134512640 135987407 3221224560 3221192684 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/8875/statm): 230420 156433 364 364 0 230056 0
[pid=8875] vsize: 921680
Current children cumulated CPU time (s) 98.51
Current children cumulated vsize (Kb) 921680

Sending SIGTERM to -8875
Sleeping 2 seconds

[startup+100.005 s]
Raw data (loadavg): 0.98 0.95 0.94 1/56 8876
Raw data (/proc/8875/stat): 8875 (pb2sat) S 8874 8875 4059 0 -1 0 246682 0 0 0 9352 502 0 0 25 0 1 0 21496672 943800320 156434 4294967295 134512640 135987407 3221224560 3221191000 135549753 0 16384 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8875/statm): 230420 156434 364 364 0 230056 0
[pid=8875] vsize: 921680
Current children cumulated CPU time (s) 98.54
Current children cumulated vsize (Kb) 921680
Sending SIGKILL to -8875
One traced child (pid=8875) 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): 101.004
CPU time (s): 98.876
CPU user time (s): 93.5298
CPU system time (s): 5.34619
CPU usage (%): 97.8931
Max. virtual memory (cumulated for all children) (Kb): 921680

Verifier Data

ERROR: no interpretation found !