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/MIPLIB/miplib/normalized-mps-v2-20-10-bell4.opb
MD5SUM3cce8c056d32fd25c784b4e9cbdd2db6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 540233279610250
Optimality of the best value was proved NO
Number of terms in the objective function 1527
Biggest coefficient in the objective function 4949278720000000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 114314457147588882
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 4949278720000000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 114314457147588882
Number of bits of the biggest sum of numbers57
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.07
Number of variables1996
Total number of constraints169
Number of constraints which are clauses18
Number of constraints which are cardinality constraints (but not clauses)34
Number of constraints which are nor clauses,nor cardinality constraints117
Minimum length of a constraint1
Maximum length of a constraint135

Trace number 9958

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-23 16:16:25 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8706 boxname=wulflinc17 idbench=502 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  3cce8c056d32fd25c784b4e9cbdd2db6  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-bell4.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-bell4.opb
IDLAUNCH: 8706
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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		: 451.161
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:        930696 kB
Buffers:         15912 kB
Cached:          69768 kB
SwapCached:          0 kB
Active:          43944 kB
Inactive:        44636 kB
HighTotal:      131008 kB
HighFree:        56980 kB
LowTotal:       903652 kB
LowFree:        873716 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             9828 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:18:31 (client local time) WITH STATUS 1 IN 125.676 SECONDS
stats: 8706 7 125.676 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 6297426774280722
c big objective detected
c trying from 0 to 511
c CONFLICT during preprocess 
c trying from 512 to 1023

	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/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21558598 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 373 2 364 364 0 9 0
[pid=8858] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-bell4.opb

[startup+10.002 s]
Raw data (loadavg): 0.85 0.91 0.90 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 27891 0 0 0 929 67 0 0 25 0 1 0 21558598 83533824 16733 4294967295 134512640 135987407 3221224560 3221207540 134641978 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 20394 16733 364 364 0 20030 0
[pid=8858] vsize: 81576
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 81576

[startup+20.0025 s]
Raw data (loadavg): 0.87 0.91 0.90 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 54348 0 0 0 1871 124 0 0 25 0 1 0 21558598 160706560 31952 4294967295 134512640 135987407 3221224560 3221210868 134637037 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 39235 31952 364 364 0 38871 0
[pid=8858] vsize: 156940
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 156940

[startup+30.0032 s]
Raw data (loadavg): 0.89 0.91 0.90 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 93666 0 0 0 2786 206 0 0 25 0 1 0 21558598 277848064 49050 4294967295 134512640 135987407 3221224560 3221209936 134537376 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 67834 49050 364 364 0 67470 0
[pid=8858] vsize: 271336
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 271336

[startup+40.0038 s]
Raw data (loadavg): 0.91 0.92 0.90 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 107384 0 0 0 3758 234 0 0 25 0 1 0 21558598 315998208 62519 4294967295 134512640 135987407 3221224560 3221206716 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 77148 62519 364 364 0 76784 0
[pid=8858] vsize: 308592
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 308592

[startup+50.0044 s]
Raw data (loadavg): 0.92 0.92 0.90 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 115446 0 0 0 4728 257 0 0 25 0 1 0 21558598 336760832 68696 4294967295 134512640 135987407 3221224560 3221223120 134788496 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 82217 68696 364 364 0 81853 0
[pid=8858] vsize: 328868
Current children cumulated CPU time (s) 49.85
Current children cumulated vsize (Kb) 328868

[startup+60.004 s]
Raw data (loadavg): 0.93 0.92 0.90 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 127971 0 0 0 5689 287 0 0 25 0 1 0 21558598 499257344 80921 4294967295 134512640 135987407 3221224560 3221162624 134856581 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 121889 80921 364 364 0 121525 0
[pid=8858] vsize: 487556
Current children cumulated CPU time (s) 59.76
Current children cumulated vsize (Kb) 487556

[startup+70.0046 s]
Raw data (loadavg): 0.94 0.92 0.91 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 164653 0 0 0 6613 359 0 0 25 0 1 0 21558598 480804864 98146 4294967295 134512640 135987407 3221224560 3220956608 134854943 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 117384 98146 364 364 0 117020 0
[pid=8858] vsize: 469536
Current children cumulated CPU time (s) 69.72
Current children cumulated vsize (Kb) 469536

[startup+80.0052 s]
Raw data (loadavg): 0.95 0.92 0.91 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 205086 0 0 0 7523 448 0 0 25 0 1 0 21558598 605392896 113789 4294967295 134512640 135987407 3221224560 3220877732 135480418 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 147801 113789 364 364 0 147437 0
[pid=8858] vsize: 591204
Current children cumulated CPU time (s) 79.71
Current children cumulated vsize (Kb) 591204

[startup+90.0058 s]
Raw data (loadavg): 0.96 0.93 0.91 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 220935 0 0 0 8482 486 0 0 25 0 1 0 21558598 664088576 129431 4294967295 134512640 135987407 3221224560 3220913084 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 162131 129431 364 364 0 161767 0
[pid=8858] vsize: 648524
Current children cumulated CPU time (s) 89.68
Current children cumulated vsize (Kb) 648524

[startup+100.006 s]
Raw data (loadavg): 0.96 0.93 0.91 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 233009 0 0 0 9451 516 0 0 25 0 1 0 21558598 680235008 136190 4294967295 134512640 135987407 3221224560 3221223280 134817687 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 166073 136190 364 364 0 165709 0
[pid=8858] vsize: 664292
Current children cumulated CPU time (s) 99.67
Current children cumulated vsize (Kb) 664292

[startup+110.007 s]
Raw data (loadavg): 0.97 0.93 0.91 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 260905 0 0 0 10370 589 0 0 25 0 1 0 21558598 777932800 163776 4294967295 134512640 135987407 3221224560 3220972112 134856380 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 189925 163776 364 364 0 189561 0
[pid=8858] vsize: 759700
Current children cumulated CPU time (s) 109.59
Current children cumulated vsize (Kb) 759700

[startup+120.008 s]
Raw data (loadavg): 0.97 0.93 0.91 2/55 8858
Raw data (/proc/8858/stat): 8858 (pb2sat) R 8857 8858 4060 0 -1 0 273930 0 0 0 11345 614 0 0 25 0 1 0 21558598 782258176 176546 4294967295 134512640 135987407 3221224560 3220803212 134636959 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8858/statm): 190981 176546 364 364 0 190617 0
[pid=8858] vsize: 763924
Current children cumulated CPU time (s) 119.59
Current children cumulated vsize (Kb) 763924
One traced child (pid=8858) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 126.092
CPU time (s): 125.676
CPU user time (s): 119.164
CPU system time (s): 6.51201
CPU usage (%): 99.6696
Max. virtual memory (cumulated for all children) (Kb): 763924

Verifier Data

ERROR: no interpretation found !