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-bell3a.opb
MD5SUM20897ed4b3cd94cc1a84b64d339b40e4
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1964389119494640
Optimality of the best value was proved NO
Number of terms in the objective function 1716
Biggest coefficient in the objective function 5134096531456000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 216401520151185266
Number of bits of the sum of numbers in the objective function 58
Biggest number in a constraint 5134096531456000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 216401520151185266
Number of bits of the biggest sum of numbers58
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.11
Number of variables2219
Total number of constraints194
Number of constraints which are clauses22
Number of constraints which are cardinality constraints (but not clauses)39
Number of constraints which are nor clauses,nor cardinality constraints133
Minimum length of a constraint1
Maximum length of a constraint191

Trace number 9957

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-23 16:16:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8704 boxname=wulflinc25 idbench=500 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  20897ed4b3cd94cc1a84b64d339b40e4  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-bell3a.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-bell3a.opb
IDLAUNCH: 8704
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.002
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		: 451.002
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:        927232 kB
Buffers:         17200 kB
Cached:          71064 kB
SwapCached:          0 kB
Active:          44820 kB
Inactive:        46412 kB
HighTotal:      131008 kB
HighFree:        55972 kB
LowTotal:       903652 kB
LowFree:        871260 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:            10736 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:18:29 (client local time) WITH STATUS 1 IN 139.361 SECONDS
stats: 8704 7 139.361 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 2831141305875703
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/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21519994 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 373 2 364 364 0 9 0
[pid=7910] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-bell3a.opb

[startup+10.002 s]
Raw data (loadavg): 0.87 0.95 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 28197 0 0 0 934 65 0 0 25 0 1 0 21519994 83722240 17034 4294967295 134512640 135987407 3221224560 3221208220 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 20440 17034 364 364 0 20076 0
[pid=7910] vsize: 81760
Current children cumulated CPU time (s) 9.99
Current children cumulated vsize (Kb) 81760

[startup+20.0026 s]
Raw data (loadavg): 0.89 0.95 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 54819 0 0 0 1877 121 0 0 25 0 1 0 21519994 160894976 32415 4294967295 134512640 135987407 3221224560 3221208776 135488001 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 39281 32415 364 364 0 38917 0
[pid=7910] vsize: 157124
Current children cumulated CPU time (s) 19.98
Current children cumulated vsize (Kb) 157124

[startup+30.0032 s]
Raw data (loadavg): 0.90 0.95 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 93923 0 0 0 2790 204 0 0 25 0 1 0 21519994 276279296 49295 4294967295 134512640 135987407 3221224560 3221207584 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 67451 49295 364 364 0 67087 0
[pid=7910] vsize: 269804
Current children cumulated CPU time (s) 29.94
Current children cumulated vsize (Kb) 269804

[startup+40.0028 s]
Raw data (loadavg): 0.92 0.95 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 108305 0 0 0 3760 234 0 0 25 0 1 0 21519994 316592128 63425 4294967295 134512640 135987407 3221224560 3221211756 135499903 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 77293 63425 364 364 0 76929 0
[pid=7910] vsize: 309172
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 309172

[startup+50.0034 s]
Raw data (loadavg): 0.93 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 149448 0 0 0 4676 315 0 0 25 0 1 0 21519994 444129280 84932 4294967295 134512640 135987407 3221224560 3221206044 135500012 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 108430 84932 364 364 0 108066 0
[pid=7910] vsize: 433720
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 433720

[startup+60.004 s]
Raw data (loadavg): 0.94 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 158535 0 0 0 5645 339 0 0 25 0 1 0 21519994 465797120 91732 4294967295 134512640 135987407 3221224560 3221223248 134811775 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 113720 91732 364 364 0 113356 0
[pid=7910] vsize: 454880
Current children cumulated CPU time (s) 59.84
Current children cumulated vsize (Kb) 454880

[startup+70.0036 s]
Raw data (loadavg): 0.95 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 159159 0 0 0 6630 345 0 0 25 0 1 0 21519994 468418560 92356 4294967295 134512640 135987407 3221224560 3221223020 135481242 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 114360 92356 364 364 0 113996 0
[pid=7910] vsize: 457440
Current children cumulated CPU time (s) 69.75
Current children cumulated vsize (Kb) 457440

[startup+80.0042 s]
Raw data (loadavg): 0.96 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 159816 0 0 0 7610 353 0 0 21 0 1 0 21519994 469733376 93004 4294967295 134512640 135987407 3221224560 3220630992 134892999 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 114681 93004 364 364 0 114317 0
[pid=7910] vsize: 458724
Current children cumulated CPU time (s) 79.63
Current children cumulated vsize (Kb) 458724

[startup+90.0038 s]
Raw data (loadavg): 0.96 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 200228 0 0 0 8516 446 0 0 25 0 1 0 21519994 590811136 108608 4294967295 134512640 135987407 3221224560 3220696364 134636964 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 144241 108608 364 364 0 143877 0
[pid=7910] vsize: 576964
Current children cumulated CPU time (s) 89.62
Current children cumulated vsize (Kb) 576964

[startup+100.004 s]
Raw data (loadavg): 0.97 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 216553 0 0 0 9477 483 0 0 25 0 1 0 21519994 650096640 124720 4294967295 134512640 135987407 3221224560 3221097824 134878092 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7910/statm): 158715 124720 364 364 0 158351 0
[pid=7910] vsize: 634860
Current children cumulated CPU time (s) 99.6
Current children cumulated vsize (Kb) 634860

[startup+110.005 s]
Raw data (loadavg): 0.97 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 235806 0 0 0 10432 525 0 0 25 0 1 0 21519994 681590784 143726 4294967295 134512640 135987407 3221224560 3221178608 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7910/statm): 166404 143726 364 364 0 166040 0
[pid=7910] vsize: 665616
Current children cumulated CPU time (s) 109.57
Current children cumulated vsize (Kb) 665616

[startup+120.005 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 256382 0 0 0 11380 575 0 0 25 0 1 0 21519994 728440832 161886 4294967295 134512640 135987407 3221224560 3221223024 134827609 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7910/statm): 177842 161886 364 364 0 177478 0
[pid=7910] vsize: 711368
Current children cumulated CPU time (s) 119.55
Current children cumulated vsize (Kb) 711368

[startup+130.004 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 7910
Raw data (/proc/7910/stat): 7910 (pb2sat) R 7909 7910 4004 0 -1 0 276899 0 0 0 12321 629 0 0 25 0 1 0 21519994 796090368 178331 4294967295 134512640 135987407 3221224560 3221223296 134876341 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7910/statm): 194358 178331 364 364 0 193994 0
[pid=7910] vsize: 777432
Current children cumulated CPU time (s) 129.5
Current children cumulated vsize (Kb) 777432
One traced child (pid=7910) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 139.882
CPU time (s): 139.361
CPU user time (s): 132.474
CPU system time (s): 6.88695
CPU usage (%): 99.6272
Max. virtual memory (cumulated for all children) (Kb): 777432

Verifier Data

ERROR: no interpretation found !