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-share1b.opb
MD5SUM8d3c68301f62da0e55b9c337557ad45c
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 930
Biggest coefficient in the objective function 268435456000000
Number of bits for the biggest coefficient in the objective function 48
Sum of the numbers in the objective function 2701523689249770
Number of bits of the sum of numbers in the objective function 52
Biggest number in a constraint 7098668259737600
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 57387730531810471
Number of bits of the biggest sum of numbers56
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark3.50147
Number of variables6750
Total number of constraints117
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 constraints117
Minimum length of a constraint30
Maximum length of a constraint1110

Trace number 9946

Launcher Data

LAUNCH ON wulflinc19 THE 2005-09-23 16:15:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8697 boxname=wulflinc19 idbench=493 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  8d3c68301f62da0e55b9c337557ad45c  /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-share1b.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-share1b.opb
IDLAUNCH: 8697
/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:        923680 kB
Buffers:         15444 kB
Cached:          75676 kB
SwapCached:          0 kB
Active:          46508 kB
Inactive:        47516 kB
HighTotal:      131008 kB
HighFree:        51828 kB
LowTotal:       903652 kB
LowFree:        871852 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11376 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:16:55 (client local time) WITH STATUS 1 IN 105.045 SECONDS
stats: 8697 7 105.045 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc

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/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21548732 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 373 2 364 364 0 9 0
[pid=8241] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-share1b.opb

[startup+10.0017 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 31436 0 0 0 929 67 0 0 25 0 1 0 21548732 99835904 20281 4294967295 134512640 135987407 3221224560 3221205584 134559955 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 24374 20281 364 364 0 24010 0
[pid=8241] vsize: 97496
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 97496

[startup+20.0025 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 57832 0 0 0 1880 114 0 0 25 0 1 0 21548732 181223424 35458 4294967295 134512640 135987407 3221224560 3221203068 135480478 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 44244 35458 364 364 0 43880 0
[pid=8241] vsize: 176976
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 176976

[startup+30.0034 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 94559 0 0 0 2811 181 0 0 25 0 1 0 21548732 348876800 62274 4294967295 134512640 135987407 3221224560 3221111872 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 85175 62274 364 364 0 84811 0
[pid=8241] vsize: 340700
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 340700

[startup+40.0042 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 109272 0 0 0 3780 212 0 0 25 0 1 0 21548732 335339520 64476 4294967295 134512640 135987407 3221224560 3221122220 135477857 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 81870 64476 364 364 0 81506 0
[pid=8241] vsize: 327480
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 327480

[startup+50.0049 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 148184 0 0 0 4707 281 0 0 25 0 1 0 21548732 534806528 102391 4294967295 134512640 135987407 3221224560 3221122768 134856484 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 130568 102391 364 364 0 130204 0
[pid=8241] vsize: 522272
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 522272

[startup+60.0048 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 193905 0 0 0 5607 380 0 0 25 0 1 0 21548732 595660800 104714 4294967295 134512640 135987407 3221224560 3221130016 134887889 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 145425 104714 364 364 0 145061 0
[pid=8241] vsize: 581700
Current children cumulated CPU time (s) 59.87
Current children cumulated vsize (Kb) 581700

[startup+70.0056 s]
Raw data (loadavg): 0.99 0.95 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 210845 0 0 0 6571 414 0 0 25 0 1 0 21548732 651653120 121448 4294967295 134512640 135987407 3221224560 3221136316 134636959 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 159095 121448 364 364 0 158731 0
[pid=8241] vsize: 636380
Current children cumulated CPU time (s) 69.85
Current children cumulated vsize (Kb) 636380

[startup+80.0064 s]
Raw data (loadavg): 0.99 0.96 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 230500 0 0 0 7529 453 0 0 25 0 1 0 21548732 677470208 140864 4294967295 134512640 135987407 3221224560 3221139676 134637011 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 165398 140864 364 364 0 165034 0
[pid=8241] vsize: 661592
Current children cumulated CPU time (s) 79.82
Current children cumulated vsize (Kb) 661592

[startup+90.0072 s]
Raw data (loadavg): 0.99 0.96 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 250151 0 0 0 8490 491 0 0 25 0 1 0 21548732 703430656 160276 4294967295 134512640 135987407 3221224560 3221144004 135478509 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 171736 160276 364 364 0 171372 0
[pid=8241] vsize: 686944
Current children cumulated CPU time (s) 89.81
Current children cumulated vsize (Kb) 686944

[startup+100.007 s]
Raw data (loadavg): 0.99 0.96 0.92 2/55 8241
Raw data (/proc/8241/stat): 8241 (pb2sat) R 8240 8241 4060 0 -1 0 265300 0 0 0 9459 520 0 0 25 0 1 0 21548732 778330112 175257 4294967295 134512640 135987407 3221224560 3221222852 135479924 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8241/statm): 190022 175257 364 364 0 189658 0
[pid=8241] vsize: 760088
Current children cumulated CPU time (s) 99.79
Current children cumulated vsize (Kb) 760088
One traced child (pid=8241) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 105.252
CPU time (s): 105.045
CPU user time (s): 99.4769
CPU system time (s): 5.56815
CPU usage (%): 99.8033
Max. virtual memory (cumulated for all children) (Kb): 760088

Verifier Data

ERROR: no interpretation found !