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-perold.opb
MD5SUMe16309ade16cb14d2a4f972d0ed40677
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 210
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 7516192761
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint -5768736714256285696
Number of bits of the biggest number in a constraint 64
Biggest sum of numbers in a constraint 84317276328546238464
Number of bits of the biggest sum of numbers67
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark17.8723
Number of variables36286
Total number of constraints891
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 constraints891
Minimum length of a constraint10
Maximum length of a constraint991

Trace number 9900

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-23 16:08:08 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8650 boxname=wulflinc3 idbench=446 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  e16309ade16cb14d2a4f972d0ed40677  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-perold.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-perold.opb
IDLAUNCH: 8650
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.228
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	: 2
cpu MHz		: 451.228
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:        932940 kB
Buffers:         12776 kB
Cached:          71544 kB
SwapCached:          0 kB
Active:          47728 kB
Inactive:        39520 kB
HighTotal:      131008 kB
HighFree:        55160 kB
LowTotal:       903652 kB
LowFree:        877780 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8888 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:09:47 (client local time) WITH STATUS 1 IN 99.2899 SECONDS
stats: 8650 7 99.2899 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/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21524311 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 373 2 364 364 0 9 0
[pid=8676] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-perold.opb

[startup+10.002 s]
Raw data (loadavg): 0.88 0.94 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 30952 0 0 0 929 66 0 0 25 0 1 0 21524311 98926592 19743 4294967295 134512640 135987407 3221224560 3221127572 134641995 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 24152 19743 364 364 0 23788 0
[pid=8676] vsize: 96608
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 96608

[startup+20.0028 s]
Raw data (loadavg): 0.89 0.94 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 62076 0 0 0 1865 126 0 0 25 0 1 0 21524311 196100096 39280 4294967295 134512640 135987407 3221224560 3221126796 135480465 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 47876 39280 364 364 0 47512 0
[pid=8676] vsize: 191504
Current children cumulated CPU time (s) 19.91
Current children cumulated vsize (Kb) 191504

[startup+30.0027 s]
Raw data (loadavg): 0.91 0.94 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 100109 0 0 0 2784 204 0 0 25 0 1 0 21524311 380829696 66581 4294967295 134512640 135987407 3221224560 3221126992 134887487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 92976 66581 364 364 0 92612 0
[pid=8676] vsize: 371904
Current children cumulated CPU time (s) 29.88
Current children cumulated vsize (Kb) 371904

[startup+40.0035 s]
Raw data (loadavg): 0.92 0.94 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 123404 0 0 0 3735 250 0 0 25 0 1 0 21524311 389181440 77356 4294967295 134512640 135987407 3221224560 3221129260 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 95015 77356 364 364 0 94651 0
[pid=8676] vsize: 380060
Current children cumulated CPU time (s) 39.85
Current children cumulated vsize (Kb) 380060

[startup+50.0043 s]
Raw data (loadavg): 0.93 0.95 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 168029 0 0 0 4643 336 0 0 25 0 1 0 21524311 530214912 100657 4294967295 134512640 135987407 3221224560 3221126912 134635350 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 129447 100657 364 364 0 129083 0
[pid=8676] vsize: 517788
Current children cumulated CPU time (s) 49.79
Current children cumulated vsize (Kb) 517788

[startup+60.0052 s]
Raw data (loadavg): 0.94 0.95 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 187450 0 0 0 5602 376 0 0 25 0 1 0 21524311 558059520 119819 4294967295 134512640 135987407 3221224560 3221126604 134669203 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 136245 119819 364 364 0 135881 0
[pid=8676] vsize: 544980
Current children cumulated CPU time (s) 59.78
Current children cumulated vsize (Kb) 544980

[startup+70.006 s]
Raw data (loadavg): 0.95 0.95 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 228285 0 0 0 6515 461 0 0 25 0 1 0 21524311 681836544 135862 4294967295 134512640 135987407 3221224560 3221127244 134637031 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 166464 135862 364 364 0 166100 0
[pid=8676] vsize: 665856
Current children cumulated CPU time (s) 69.76
Current children cumulated vsize (Kb) 665856

[startup+80.0059 s]
Raw data (loadavg): 0.96 0.95 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 244237 0 0 0 7480 494 0 0 25 0 1 0 21524311 738254848 151603 4294967295 134512640 135987407 3221224560 3221127328 134560386 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 180238 151603 364 364 0 179874 0
[pid=8676] vsize: 720952
Current children cumulated CPU time (s) 79.74
Current children cumulated vsize (Kb) 720952

[startup+90.0067 s]
Raw data (loadavg): 0.96 0.95 0.92 2/55 8676
Raw data (/proc/8676/stat): 8676 (pb2sat) R 8675 8676 4060 0 -1 0 263688 0 0 0 8443 529 0 0 25 0 1 0 21524311 767942656 170655 4294967295 134512640 135987407 3221224560 3221127264 134537412 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8676/statm): 187486 170655 364 364 0 187122 0
[pid=8676] vsize: 749944
Current children cumulated CPU time (s) 89.72
Current children cumulated vsize (Kb) 749944
One traced child (pid=8676) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 99.5754
CPU time (s): 99.2899
CPU user time (s): 93.5608
CPU system time (s): 5.72913
CPU usage (%): 99.7132
Max. virtual memory (cumulated for all children) (Kb): 749944

Verifier Data

ERROR: no interpretation found !