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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-afiro.opb
MD5SUM6cb229ab1cf181ca11759652604cb193
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -4121005
Optimality of the best value was proved NO
Number of terms in the objective function 150
Biggest coefficient in the objective function 134217728000
Number of bits for the biggest coefficient in the objective function 37
Sum of the numbers in the objective function 316753837785
Number of bits of the sum of numbers in the objective function 39
Biggest number in a constraint 1304059445248
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 20964809094075
Number of bits of the biggest sum of numbers45
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.14
Number of variables960
Total number of constraints27
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints27
Minimum length of a constraint30
Maximum length of a constraint270

Trace number 9853

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-23 16:00:32 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8609 boxname=wulflinc3 idbench=405 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  6cb229ab1cf181ca11759652604cb193  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-afiro.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-afiro.opb
IDLAUNCH: 8609
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.228
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		: 451.228
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:        938708 kB
Buffers:         12596 kB
Cached:          66420 kB
SwapCached:          0 kB
Active:          43996 kB
Inactive:        37940 kB
HighTotal:      131008 kB
HighFree:        60368 kB
LowTotal:       903652 kB
LowFree:        878340 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8436 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:02:22 (client local time) WITH STATUS 1 IN 108.902 SECONDS
stats: 8609 7 108.902 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/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 21478796 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8223/statm): 373 2 364 364 0 9 0
[pid=8223] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-afiro.opb

[startup+10.0014 s]
Raw data (loadavg): 0.87 0.94 0.93 2/55 8223
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 28630 0 0 0 931 66 0 0 25 0 1 0 21478796 83939328 17468 4294967295 134512640 135987407 3221224560 3221132808 134854861 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8223/statm): 20493 17468 364 364 0 20129 0
[pid=8223] vsize: 81972
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 81972

[startup+20.0022 s]
Raw data (loadavg): 0.89 0.94 0.93 2/55 8223
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 59129 0 0 0 1867 127 0 0 25 0 1 0 21478796 180457472 36759 4294967295 134512640 135987407 3221224560 3221135056 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8223/statm): 44057 36759 364 364 0 43693 0
[pid=8223] vsize: 176228
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 176228

[startup+30.003 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 8225
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 101317 0 0 0 2778 212 0 0 25 0 1 0 21478796 312217600 56755 4294967295 134512640 135987407 3221224560 3221137356 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 76225 56755 364 364 0 75861 0
[pid=8223] vsize: 304900
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 304900

[startup+40.0039 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 8225
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 119018 0 0 0 3739 249 0 0 25 0 1 0 21478796 369713152 74242 4294967295 134512640 135987407 3221224560 3221143936 134856594 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 90262 74242 364 364 0 89898 0
[pid=8223] vsize: 361048
Current children cumulated CPU time (s) 39.88
Current children cumulated vsize (Kb) 361048

[startup+50.0047 s]
Raw data (loadavg): 0.99 0.96 0.94 2/55 8229
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 147625 0 0 0 4684 301 0 0 25 0 1 0 21478796 553967616 102257 4294967295 134512640 135987407 3221224560 3221144716 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 135246 102260 364 364 0 134882 0
[pid=8223] vsize: 540984
Current children cumulated CPU time (s) 49.85
Current children cumulated vsize (Kb) 540984

[startup+60.0045 s]
Raw data (loadavg): 0.99 0.96 0.94 2/55 8229
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 203377 0 0 0 5561 419 0 0 25 0 1 0 21478796 632799232 114222 4294967295 134512640 135987407 3221224560 3221145664 134878092 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 154492 114222 364 364 0 154128 0
[pid=8223] vsize: 617968
Current children cumulated CPU time (s) 59.8
Current children cumulated vsize (Kb) 617968

[startup+70.0054 s]
Raw data (loadavg): 0.99 0.96 0.94 2/55 8229
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 219572 0 0 0 6531 449 0 0 25 0 1 0 21478796 688132096 130221 4294967295 134512640 135987407 3221224560 3221146620 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 168001 130221 364 364 0 167637 0
[pid=8223] vsize: 672004
Current children cumulated CPU time (s) 69.8
Current children cumulated vsize (Kb) 672004

[startup+80.0052 s]
Raw data (loadavg): 0.99 0.96 0.94 2/55 8229
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 238389 0 0 0 7493 484 0 0 25 0 1 0 21478796 713158656 148808 4294967295 134512640 135987407 3221224560 3221154544 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 174111 148808 364 364 0 173747 0
[pid=8223] vsize: 696444
Current children cumulated CPU time (s) 79.77
Current children cumulated vsize (Kb) 696444

[startup+90.006 s]
Raw data (loadavg): 0.99 0.97 0.94 2/55 8229
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 257140 0 0 0 8455 521 0 0 25 0 1 0 21478796 737918976 167331 4294967295 134512640 135987407 3221224560 3221151728 134862192 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 180156 167332 364 364 0 179792 0
[pid=8223] vsize: 720624
Current children cumulated CPU time (s) 89.76
Current children cumulated vsize (Kb) 720624

[startup+100.006 s]
Raw data (loadavg): 0.99 0.97 0.94 2/55 8229
Raw data (/proc/8223/stat): 8223 (pb2sat) R 8222 8223 4060 0 -1 0 271937 0 0 0 9423 551 0 0 25 0 1 0 21478796 807854080 181947 4294967295 134512640 135987407 3221224560 3221156172 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8223/statm): 197230 181947 364 364 0 196866 0
[pid=8223] vsize: 788920
Current children cumulated CPU time (s) 99.74
Current children cumulated vsize (Kb) 788920
One traced child (pid=8223) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 109.171
CPU time (s): 108.902
CPU user time (s): 102.917
CPU system time (s): 5.98509
CPU usage (%): 99.7539
Max. virtual memory (cumulated for all children) (Kb): 788920

Verifier Data

ERROR: no interpretation found !