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/miplib3/normalized-mps-v2-20-10-air03.opb
MD5SUM69337cf8d2b6f6cf8cc02fedc291ffcc
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 234457
Optimality of the best value was proved NO
Number of terms in the objective function 10757
Biggest coefficient in the objective function 6873
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 13748961
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 6873
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 13748961
Number of bits of the biggest sum of numbers24
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1190.49
Number of variables10757
Total number of constraints10881
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)10881
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint3861

Trace number 10117

Launcher Data

LAUNCH ON wulflinc26 THE 2005-09-23 17:02:58 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8876 boxname=wulflinc26 idbench=672 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  69337cf8d2b6f6cf8cc02fedc291ffcc  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-air03.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-air03.opb
IDLAUNCH: 8876
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.055
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		: 451.055
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:        910800 kB
Buffers:         11576 kB
Cached:          94776 kB
SwapCached:          0 kB
Active:          46720 kB
Inactive:        62544 kB
HighTotal:      131008 kB
HighFree:        41244 kB
LowTotal:       903652 kB
LowFree:        869556 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8940 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:04:46 (client local time) WITH STATUS 1 IN 107.723 SECONDS
stats: 8876 7 107.723 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 291404
c big objective detected
c trying from 0 to 511

	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/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21800921 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8510/statm): 373 2 364 364 0 9 0
[pid=8510] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-air03.opb

[startup+10.0016 s]
Raw data (loadavg): 0.94 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 13505 0 0 0 965 32 0 0 25 0 1 0 21800921 43196416 7943 4294967295 134512640 135987407 3221224560 3220916240 134637867 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8510/statm): 10546 7943 364 364 0 10182 0
[pid=8510] vsize: 42184
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 42184

[startup+20.0033 s]
Raw data (loadavg): 0.95 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 36026 0 0 0 1910 84 0 0 25 0 1 0 21800921 138399744 24185 4294967295 134512640 135987407 3221224560 3219536012 135500012 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8510/statm): 33789 24185 364 364 0 33425 0
[pid=8510] vsize: 135156
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 135156

[startup+30.004 s]
Raw data (loadavg): 0.96 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 65322 0 0 0 2847 145 0 0 25 0 1 0 21800921 200192000 42341 4294967295 134512640 135987407 3221224560 3219087968 134537562 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8510/statm): 48875 42341 364 364 0 48511 0
[pid=8510] vsize: 195500
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 195500

[startup+40.0037 s]
Raw data (loadavg): 0.96 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 106818 0 0 0 3759 229 0 0 25 0 1 0 21800921 329228288 61615 4294967295 134512640 135987407 3221224560 3217954224 134861798 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8510/statm): 80378 61615 364 364 0 80014 0
[pid=8510] vsize: 321512
Current children cumulated CPU time (s) 39.88
Current children cumulated vsize (Kb) 321512

[startup+50.0044 s]
Raw data (loadavg): 0.97 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 124728 0 0 0 4723 264 0 0 25 0 1 0 21800921 389140480 79283 4294967295 134512640 135987407 3221224560 3219130804 134866067 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8510/statm): 95005 79283 364 364 0 94641 0
[pid=8510] vsize: 380020
Current children cumulated CPU time (s) 49.87
Current children cumulated vsize (Kb) 380020

[startup+60.005 s]
Raw data (loadavg): 0.97 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 167632 0 0 0 5639 342 0 0 17 0 1 0 21800921 528842752 102562 4294967295 134512640 135987407 3221224560 3218011392 134640450 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8510/statm): 129112 102563 364 364 0 128748 0
[pid=8510] vsize: 516448
Current children cumulated CPU time (s) 59.81
Current children cumulated vsize (Kb) 516448

[startup+70.0067 s]
Raw data (loadavg): 0.98 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 194500 0 0 0 6577 402 0 0 25 0 1 0 21800921 755855360 129190 4294967295 134512640 135987407 3221224560 3218583344 134887487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8510/statm): 184535 129194 364 364 0 184171 0
[pid=8510] vsize: 738140
Current children cumulated CPU time (s) 69.79
Current children cumulated vsize (Kb) 738140

[startup+80.0074 s]
Raw data (loadavg): 0.98 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 226552 0 0 0 7504 473 0 0 25 0 1 0 21800921 679653376 136437 4294967295 134512640 135987407 3221224560 3219666556 135482121 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8510/statm): 165931 136437 364 364 0 165567 0
[pid=8510] vsize: 663724
Current children cumulated CPU time (s) 79.77
Current children cumulated vsize (Kb) 663724

[startup+90.0071 s]
Raw data (loadavg): 0.98 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 241823 0 0 0 8469 506 0 0 25 0 1 0 21800921 735645696 151500 4294967295 134512640 135987407 3221224560 3220519252 135478549 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8510/statm): 179601 151502 364 364 0 179237 0
[pid=8510] vsize: 718404
Current children cumulated CPU time (s) 89.75
Current children cumulated vsize (Kb) 718404

[startup+100.008 s]
Raw data (loadavg): 0.98 0.99 0.93 2/55 8510
Raw data (/proc/8510/stat): 8510 (pb2sat) R 8509 8510 4005 0 -1 0 261084 0 0 0 9424 548 0 0 25 0 1 0 21800921 767139840 170511 4294967295 134512640 135987407 3221224560 3217656940 135482121 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8510/statm): 187290 170511 364 364 0 186926 0
[pid=8510] vsize: 749160
Current children cumulated CPU time (s) 99.72
Current children cumulated vsize (Kb) 749160
One traced child (pid=8510) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 108.007
CPU time (s): 107.723
CPU user time (s): 101.859
CPU system time (s): 5.86411
CPU usage (%): 99.7367
Max. virtual memory (cumulated for all children) (Kb): 749160

Verifier Data

ERROR: no interpretation found !