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-scfxm1.opb
MD5SUM94a3882d5878f0ddbdd9e110c3ba8806
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 690
Biggest coefficient in the objective function 5368709120
Number of bits for the biggest coefficient in the objective function 33
Sum of the numbers in the objective function 140660178813
Number of bits of the sum of numbers in the objective function 38
Biggest number in a constraint 53687091200000
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 326830904793855
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark6.34404
Number of variables13710
Total number of constraints330
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 constraints330
Minimum length of a constraint30
Maximum length of a constraint1710

Trace number 9949

Launcher Data

LAUNCH ON wulflinc24 THE 2005-09-23 16:15:08 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8696 boxname=wulflinc24 idbench=492 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  94a3882d5878f0ddbdd9e110c3ba8806  /oldhome/oroussel/tmp/wulflinc24/normalized-mps-v2-20-10-scfxm1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc24/normalized-mps-v2-20-10-scfxm1.opb
IDLAUNCH: 8696
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.047
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		: 451.047
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:        894992 kB
Buffers:         15228 kB
Cached:         105064 kB
SwapCached:          0 kB
Active:          67628 kB
Inactive:        55596 kB
HighTotal:      131008 kB
HighFree:        23996 kB
LowTotal:       903652 kB
LowFree:        870996 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10832 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:17:04 (client local time) WITH STATUS 1 IN 114.994 SECONDS
stats: 8696 7 114.994 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/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 18 0 0 0 0 0 0 0 20 0 1 0 21545077 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 373 10 364 364 0 9 0
[pid=8517] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc24/normalized-mps-v2-20-10-scfxm1.opb

[startup+10.0018 s]
Raw data (loadavg): 0.87 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 30648 0 0 0 935 60 0 0 25 0 1 0 21545077 98385920 19517 4294967295 134512640 135987407 3221224560 3221078828 134636959 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 24020 19517 364 364 0 23656 0
[pid=8517] vsize: 96080
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 96080

[startup+20.0025 s]
Raw data (loadavg): 0.89 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 60552 0 0 0 1869 123 0 0 25 0 1 0 21545077 193142784 38218 4294967295 134512640 135987407 3221224560 3221079164 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 47154 38218 364 364 0 46790 0
[pid=8517] vsize: 188616
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 188616

[startup+30.0032 s]
Raw data (loadavg): 0.90 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 102393 0 0 0 2779 211 0 0 25 0 1 0 21545077 324370432 57872 4294967295 134512640 135987407 3221224560 3221081216 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 79192 57872 364 364 0 78828 0
[pid=8517] vsize: 316768
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 316768

[startup+40.0029 s]
Raw data (loadavg): 0.92 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 119612 0 0 0 3745 243 0 0 25 0 1 0 21545077 381730816 74888 4294967295 134512640 135987407 3221224560 3221080592 134560463 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 93196 74888 364 364 0 92832 0
[pid=8517] vsize: 372784
Current children cumulated CPU time (s) 39.88
Current children cumulated vsize (Kb) 372784

[startup+50.0036 s]
Raw data (loadavg): 0.93 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 138025 0 0 0 4707 279 0 0 25 0 1 0 21545077 406499328 93078 4294967295 134512640 135987407 3221224560 3221082524 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 99243 93078 364 364 0 98879 0
[pid=8517] vsize: 396972
Current children cumulated CPU time (s) 49.86
Current children cumulated vsize (Kb) 396972

[startup+60.0043 s]
Raw data (loadavg): 0.94 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 202664 0 0 0 5568 411 0 0 25 0 1 0 21545077 642953216 113578 4294967295 134512640 135987407 3221224560 3221085248 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 156971 113578 364 364 0 156607 0
[pid=8517] vsize: 627884
Current children cumulated CPU time (s) 59.79
Current children cumulated vsize (Kb) 627884

[startup+70.005 s]
Raw data (loadavg): 0.95 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 218087 0 0 0 6538 440 0 0 25 0 1 0 21545077 697192448 128815 4294967295 134512640 135987407 3221224560 3221092320 134789835 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 170213 128815 364 364 0 169849 0
[pid=8517] vsize: 680852
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 680852

[startup+80.0057 s]
Raw data (loadavg): 0.96 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 236250 0 0 0 7499 477 0 0 25 0 1 0 21545077 721661952 146759 4294967295 134512640 135987407 3221224560 3221093572 135478476 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 176187 146759 364 364 0 175823 0
[pid=8517] vsize: 704748
Current children cumulated CPU time (s) 79.76
Current children cumulated vsize (Kb) 704748

[startup+90.0054 s]
Raw data (loadavg): 0.96 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 254157 0 0 0 8460 514 0 0 25 0 1 0 21545077 745324544 164449 4294967295 134512640 135987407 3221224560 3221095360 134560683 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 181964 164449 364 364 0 181600 0
[pid=8517] vsize: 727856
Current children cumulated CPU time (s) 89.74
Current children cumulated vsize (Kb) 727856

[startup+100.006 s]
Raw data (loadavg): 0.97 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 267982 0 0 0 9429 542 0 0 25 0 1 0 21545077 813768704 178106 4294967295 134512640 135987407 3221224560 3221095168 134556271 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 198674 178106 364 364 0 198310 0
[pid=8517] vsize: 794696
Current children cumulated CPU time (s) 99.71
Current children cumulated vsize (Kb) 794696

[startup+110.007 s]
Raw data (loadavg): 0.97 0.97 0.97 2/55 8517
Raw data (/proc/8517/stat): 8517 (pb2sat) R 8516 8517 4059 0 -1 0 281777 0 0 0 10400 570 0 0 25 0 1 0 21545077 832794624 191734 4294967295 134512640 135987407 3221224560 3221223424 134795939 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8517/statm): 203319 191734 364 364 0 202955 0
[pid=8517] vsize: 813276
Current children cumulated CPU time (s) 109.7
Current children cumulated vsize (Kb) 813276
One traced child (pid=8517) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 115.29
CPU time (s): 114.994
CPU user time (s): 108.884
CPU system time (s): 6.10907
CPU usage (%): 99.743
Max. virtual memory (cumulated for all children) (Kb): 813276

Verifier Data

ERROR: no interpretation found !