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-degen2.opb
MD5SUM2d6764e721075c7867e38358b7c5ac96
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 14100
Biggest coefficient in the objective function 2553894928384
Number of bits for the biggest coefficient in the objective function 42
Sum of the numbers in the objective function 401268056673330
Number of bits of the sum of numbers in the objective function 49
Biggest number in a constraint 2553894928384
Number of bits of the biggest number in a constraint 42
Biggest sum of numbers in a constraint 401268056673330
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables16020
Total number of constraints444
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 constraints444
Minimum length of a constraint60
Maximum length of a constraint2550

Trace number 9871

Launcher Data

LAUNCH ON wulflinc19 THE 2005-09-23 16:04:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8626 boxname=wulflinc19 idbench=422 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  2d6764e721075c7867e38358b7c5ac96  /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-degen2.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-degen2.opb
IDLAUNCH: 8626
/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:        924256 kB
Buffers:         15244 kB
Cached:          75264 kB
SwapCached:          0 kB
Active:          48412 kB
Inactive:        45008 kB
HighTotal:      131008 kB
HighFree:        52276 kB
LowTotal:       903652 kB
LowFree:        871980 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11372 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:05:39 (client local time) WITH STATUS 0 IN 93.9087 SECONDS
stats: 8626 7 93.9087 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/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21482059 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 373 2 364 364 0 9 0
[pid=7572] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-degen2.opb

[startup+10.0019 s]
Raw data (loadavg): 0.98 0.97 0.95 2/55 7572
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 27425 0 0 0 930 66 0 0 25 0 1 0 21482059 86130688 16335 4294967295 134512640 135987407 3221224560 3220799520 134866032 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 21028 16335 364 364 0 20664 0
[pid=7572] vsize: 84112
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 84112

[startup+20.0027 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7572
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 55939 0 0 0 1868 126 0 0 25 0 1 0 21482059 179011584 33631 4294967295 134512640 135987407 3221224560 3220653884 134803372 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 43704 33631 364 364 0 43340 0
[pid=7572] vsize: 174816
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 174816

[startup+30.0035 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7572
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 96140 0 0 0 2784 207 0 0 25 0 1 0 21482059 297775104 51624 4294967295 134512640 135987407 3221224560 3220704572 134636944 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 72699 51624 364 364 0 72335 0
[pid=7572] vsize: 290796
Current children cumulated CPU time (s) 29.91
Current children cumulated vsize (Kb) 290796

[startup+40.0043 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7572
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 110673 0 0 0 3748 244 0 0 25 0 1 0 21482059 332275712 65904 4294967295 134512640 135987407 3221224560 3220968688 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 81122 65904 364 364 0 80758 0
[pid=7572] vsize: 324488
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 324488

[startup+50.0051 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7572
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 151145 0 0 0 4663 326 0 0 25 0 1 0 21482059 523411456 105247 4294967295 134512640 135987407 3221224560 3221150656 134856505 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7572/statm): 127786 105250 364 364 0 127422 0
[pid=7572] vsize: 511144
Current children cumulated CPU time (s) 49.89
Current children cumulated vsize (Kb) 511144

[startup+60.0059 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7572
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 190902 0 0 0 5575 413 0 0 25 0 1 0 21482059 599842816 101707 4294967295 134512640 135987407 3221224560 3220816960 134877726 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 146446 101707 364 364 0 146082 0
[pid=7572] vsize: 585784
Current children cumulated CPU time (s) 59.88
Current children cumulated vsize (Kb) 585784

[startup+70.0068 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7574
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 207099 0 0 0 6535 452 0 0 25 0 1 0 21482059 604303360 117637 4294967295 134512640 135987407 3221224560 3221024732 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 147535 117637 364 364 0 147171 0
[pid=7572] vsize: 590140
Current children cumulated CPU time (s) 69.87
Current children cumulated vsize (Kb) 590140

[startup+80.0086 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7574
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 223361 0 0 0 7501 486 0 0 25 0 1 0 21482059 609304576 133634 4294967295 134512640 135987407 3221224560 3221148924 135481322 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 148756 133634 364 364 0 148392 0
[pid=7572] vsize: 595024
Current children cumulated CPU time (s) 79.87
Current children cumulated vsize (Kb) 595024

[startup+90.0094 s]
Raw data (loadavg): 0.99 0.97 0.95 2/55 7574
Raw data (/proc/7572/stat): 7572 (pb2sat) R 7571 7572 4060 0 -1 0 235966 0 0 0 8470 517 0 0 25 0 1 0 21482059 662069248 146026 4294967295 134512640 135987407 3221224560 3220939448 134802665 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7572/statm): 161638 146026 364 364 0 161274 0
[pid=7572] vsize: 646552
Current children cumulated CPU time (s) 89.87
Current children cumulated vsize (Kb) 646552



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+93.7125 s]
Raw data (loadavg): 0.99 0.97 0.95 1/55 7574
Raw data (/proc/7572/stat): 7572 (pb2sat) T 7571 7572 4060 0 -1 0 242399 0 0 0 8823 534 0 0 25 0 1 0 21482059 949719040 152356 4294967295 134512640 135987407 3221224560 3221121568 135544035 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/7572/statm): 231865 152356 364 364 0 231501 0
[pid=7572] vsize: 927460
Current children cumulated CPU time (s) 93.57
Current children cumulated vsize (Kb) 927460

Sending SIGTERM to -7572
Sleeping 2 seconds
Sending SIGKILL to -7572
One traced child (pid=7572) 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): 96.0285
CPU time (s): 93.9087
CPU user time (s): 88.2586
CPU system time (s): 5.65014
CPU usage (%): 97.7925
Max. virtual memory (cumulated for all children) (Kb): 927460

Verifier Data

ERROR: no interpretation found !