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/miplib2003/normalized-mps-v2-20-10-nsrand-ipx.opb
MD5SUM6b39a5ca45e18a6e9e3dc91f7594e22c
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1258323967
Optimality of the best value was proved NO
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 26715880447
Number of bits of the biggest sum of numbers35
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.13
Number of variables6651
Total number of constraints7355
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)6951
Number of constraints which are nor clauses,nor cardinality constraints404
Minimum length of a constraint1
Maximum length of a constraint6651

Trace number 10057

Launcher Data

LAUNCH ON wulflinc11 THE 2005-09-23 16:44:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8816 boxname=wulflinc11 idbench=612 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  6b39a5ca45e18a6e9e3dc91f7594e22c  /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-nsrand-ipx.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-nsrand-ipx.opb
IDLAUNCH: 8816
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.045
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		: 451.045
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:        905840 kB
Buffers:          9044 kB
Cached:          94384 kB
SwapCached:          0 kB
Active:          59532 kB
Inactive:        53420 kB
HighTotal:      131008 kB
HighFree:        34356 kB
LowTotal:       903652 kB
LowFree:        871484 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10200 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:46:36 (client local time) WITH STATUS 1 IN 106.291 SECONDS
stats: 8816 7 106.291 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/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21728070 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 373 2 364 364 0 9 0
[pid=9934] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-nsrand-ipx.opb

[startup+10.0023 s]
Raw data (loadavg): 0.95 1.02 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 29251 0 0 0 927 70 0 0 25 0 1 0 21728070 98615296 18135 4294967295 134512640 135987407 3221224560 3219817456 134878632 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 24076 18135 364 364 0 23712 0
[pid=9934] vsize: 96304
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 96304

[startup+20.0031 s]
Raw data (loadavg): 0.96 1.02 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 60897 0 0 0 1855 138 0 0 25 0 1 0 21728070 197144576 38556 4294967295 134512640 135987407 3221224560 3219949600 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 48131 38556 364 364 0 47767 0
[pid=9934] vsize: 192524
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 192524

[startup+30.0039 s]
Raw data (loadavg): 0.96 1.02 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 103831 0 0 0 2760 229 0 0 25 0 1 0 21728070 330100736 59287 4294967295 134512640 135987407 3221224560 3219213724 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 80591 59287 364 364 0 80227 0
[pid=9934] vsize: 322364
Current children cumulated CPU time (s) 29.89
Current children cumulated vsize (Kb) 322364

[startup+40.0037 s]
Raw data (loadavg): 0.97 1.02 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 122809 0 0 0 3717 269 0 0 25 0 1 0 21728070 390959104 78045 4294967295 134512640 135987407 3221224560 3219181968 134854884 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 95449 78045 364 364 0 95085 0
[pid=9934] vsize: 381796
Current children cumulated CPU time (s) 39.86
Current children cumulated vsize (Kb) 381796

[startup+50.0044 s]
Raw data (loadavg): 0.97 1.02 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 147357 0 0 0 4665 319 0 0 25 0 1 0 21728070 568578048 102179 4294967295 134512640 135987407 3221224560 3219316432 134856696 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 138813 102179 364 364 0 138449 0
[pid=9934] vsize: 555252
Current children cumulated CPU time (s) 49.84
Current children cumulated vsize (Kb) 555252

[startup+60.0042 s]
Raw data (loadavg): 0.98 1.02 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 207741 0 0 0 5539 440 0 0 25 0 1 0 21728070 654032896 118597 4294967295 134512640 135987407 3221224560 3219754720 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 159676 118597 364 364 0 159312 0
[pid=9934] vsize: 638704
Current children cumulated CPU time (s) 59.79
Current children cumulated vsize (Kb) 638704

[startup+70.005 s]
Raw data (loadavg): 0.98 1.01 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 224618 0 0 0 6500 478 0 0 25 0 1 0 21728070 711106560 135273 4294967295 134512640 135987407 3221224560 3219598080 135293390 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 173610 135273 364 364 0 173246 0
[pid=9934] vsize: 694440
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 694440

[startup+80.0058 s]
Raw data (loadavg): 0.98 1.01 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 244812 0 0 0 7454 521 0 0 25 0 1 0 21728070 740438016 155224 4294967295 134512640 135987407 3221224560 3219974176 134887889 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 180771 155224 364 364 0 180407 0
[pid=9934] vsize: 723084
Current children cumulated CPU time (s) 79.75
Current children cumulated vsize (Kb) 723084

[startup+90.0056 s]
Raw data (loadavg): 0.98 1.01 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 264152 0 0 0 8414 560 0 0 25 0 1 0 21728070 766390272 174329 4294967295 134512640 135987407 3221224560 3219900400 134856681 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 187107 174329 364 364 0 186743 0
[pid=9934] vsize: 748428
Current children cumulated CPU time (s) 89.74
Current children cumulated vsize (Kb) 748428

[startup+100.006 s]
Raw data (loadavg): 0.99 1.01 0.95 2/55 9934
Raw data (/proc/9934/stat): 9934 (pb2sat) R 9933 9934 4060 0 -1 0 279616 0 0 0 9381 591 0 0 25 0 1 0 21728070 837808128 189609 4294967295 134512640 135987407 3221224560 3220796208 134557147 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9934/statm): 204543 189609 364 364 0 204179 0
[pid=9934] vsize: 818172
Current children cumulated CPU time (s) 99.72
Current children cumulated vsize (Kb) 818172
One traced child (pid=9934) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 106.575
CPU time (s): 106.291
CPU user time (s): 99.9118
CPU system time (s): 6.37903
CPU usage (%): 99.7332
Max. virtual memory (cumulated for all children) (Kb): 818172

Verifier Data

ERROR: no interpretation found !