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-p6000.opb
MD5SUM9658c3320439c0e9ede5a5b3bf39501b
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -199796
Optimality of the best value was proved NO
Number of terms in the objective function 5995
Biggest coefficient in the objective function 91110
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 12969603
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 800000
Number of bits of the biggest number in a constraint 20
Biggest sum of numbers in a constraint 28761906
Number of bits of the biggest sum of numbers25
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.14
Number of variables6000
Total number of constraints8176
Number of constraints which are clauses222
Number of constraints which are cardinality constraints (but not clauses)7919
Number of constraints which are nor clauses,nor cardinality constraints35
Minimum length of a constraint1
Maximum length of a constraint6000

Trace number 9982

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-23 16:21:31 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8739 boxname=wulflinc25 idbench=535 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  9658c3320439c0e9ede5a5b3bf39501b  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-p6000.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-p6000.opb
IDLAUNCH: 8739
/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:        925532 kB
Buffers:         17276 kB
Cached:          72280 kB
SwapCached:          0 kB
Active:          45856 kB
Inactive:        46632 kB
HighTotal:      131008 kB
HighFree:        54768 kB
LowTotal:       903652 kB
LowFree:        870764 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:            11036 kB
Committed_AS:    63632 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:23:08 (client local time) WITH STATUS 1 IN 96.6663 SECONDS
stats: 8739 7 96.6663 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/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21552225 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 373 2 364 364 0 9 0
[pid=8132] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-p6000.opb

[startup+10.0021 s]
Raw data (loadavg): 0.93 0.95 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 29166 0 0 0 931 65 0 0 25 0 1 0 21552225 91197440 18046 4294967295 134512640 135987407 3221224560 3219381472 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 22265 18046 364 364 0 21901 0
[pid=8132] vsize: 89060
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 89060

[startup+20.0027 s]
Raw data (loadavg): 0.94 0.95 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 60595 0 0 0 1860 133 0 0 25 0 1 0 21552225 197844992 38242 4294967295 134512640 135987407 3221224560 3219296944 134637919 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 48302 38242 364 364 0 47938 0
[pid=8132] vsize: 193208
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 193208

[startup+30.0033 s]
Raw data (loadavg): 0.95 0.95 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 101249 0 0 0 2774 215 0 0 25 0 1 0 21552225 382488576 68957 4294967295 134512640 135987407 3221224560 3220182160 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 93381 68957 364 364 0 93017 0
[pid=8132] vsize: 373524
Current children cumulated CPU time (s) 29.89
Current children cumulated vsize (Kb) 373524

[startup+40.0029 s]
Raw data (loadavg): 0.96 0.95 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 123677 0 0 0 3722 265 0 0 25 0 1 0 21552225 394092544 78858 4294967295 134512640 135987407 3221224560 3219588588 135480487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 96214 78858 364 364 0 95850 0
[pid=8132] vsize: 384856
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 384856

[startup+50.0035 s]
Raw data (loadavg): 0.96 0.95 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 168521 0 0 0 4625 356 0 0 25 0 1 0 21552225 536903680 104070 4294967295 134512640 135987407 3221224560 3219449328 134560652 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 131080 104070 364 364 0 130716 0
[pid=8132] vsize: 524320
Current children cumulated CPU time (s) 49.81
Current children cumulated vsize (Kb) 524320

[startup+60.0041 s]
Raw data (loadavg): 0.97 0.95 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 210339 0 0 0 5530 448 0 0 25 0 1 0 21552225 661086208 121088 4294967295 134512640 135987407 3221224560 3219399868 134636990 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 161398 121088 364 364 0 161034 0
[pid=8132] vsize: 645592
Current children cumulated CPU time (s) 59.78
Current children cumulated vsize (Kb) 645592

[startup+70.0047 s]
Raw data (loadavg): 0.97 0.96 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 228196 0 0 0 6487 489 0 0 25 0 1 0 21552225 721268736 138726 4294967295 134512640 135987407 3221224560 3219248668 134637020 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 176091 138726 364 364 0 175727 0
[pid=8132] vsize: 704364
Current children cumulated CPU time (s) 69.76
Current children cumulated vsize (Kb) 704364

[startup+80.0053 s]
Raw data (loadavg): 0.98 0.96 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 249583 0 0 0 7438 535 0 0 25 0 1 0 21552225 753573888 159854 4294967295 134512640 135987407 3221224560 3220465216 134856458 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 183978 159854 364 364 0 183614 0
[pid=8132] vsize: 735912
Current children cumulated CPU time (s) 79.73
Current children cumulated vsize (Kb) 735912

[startup+90.0049 s]
Raw data (loadavg): 0.98 0.96 0.93 2/55 8132
Raw data (/proc/8132/stat): 8132 (pb2sat) R 8131 8132 4004 0 -1 0 270841 0 0 0 8385 586 0 0 25 0 1 0 21552225 785068032 180849 4294967295 134512640 135987407 3221224560 3219662032 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8132/statm): 191667 180849 364 364 0 191303 0
[pid=8132] vsize: 766668
Current children cumulated CPU time (s) 89.71
Current children cumulated vsize (Kb) 766668
One traced child (pid=8132) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 96.9613
CPU time (s): 96.6663
CPU user time (s): 90.3313
CPU system time (s): 6.33504
CPU usage (%): 99.6958
Max. virtual memory (cumulated for all children) (Kb): 766668

Verifier Data

ERROR: no interpretation found !