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/plato.asu.edu/pub/unibo/normalized-mps-v2-20-10-nsrand_ipx.opb
MD5SUM1b24e93bee48f2c98e7d4820cbb13e8e
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1287946239
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 benchmark1195.29
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 10219

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-23 17:39:08 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8970 boxname=wulflinc18 idbench=766 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  1b24e93bee48f2c98e7d4820cbb13e8e  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-nsrand_ipx.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-nsrand_ipx.opb
IDLAUNCH: 8970
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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:        920288 kB
Buffers:         15224 kB
Cached:          79024 kB
SwapCached:          0 kB
Active:          51500 kB
Inactive:        45684 kB
HighTotal:      131008 kB
HighFree:        47628 kB
LowTotal:       903652 kB
LowFree:        872660 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11496 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:40:57 (client local time) WITH STATUS 1 IN 108.309 SECONDS
stats: 8970 7 108.309 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/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22054207 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 373 2 364 364 0 9 0
[pid=8300] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-nsrand_ipx.opb

[startup+10.0024 s]
Raw data (loadavg): 0.94 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 28501 0 0 0 930 65 0 0 25 0 1 0 22054207 89374720 17393 4294967295 134512640 135987407 3221224560 3219052480 134559311 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 21820 17393 364 364 0 21456 0
[pid=8300] vsize: 87280
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 87280

[startup+20.0033 s]
Raw data (loadavg): 0.95 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 59446 0 0 0 1861 133 0 0 25 0 1 0 22054207 195346432 37125 4294967295 134512640 135987407 3221224560 3219147416 135488133 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 47692 37125 364 364 0 47328 0
[pid=8300] vsize: 190768
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 190768

[startup+30.0043 s]
Raw data (loadavg): 0.95 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 93973 0 0 0 2786 204 0 0 25 0 1 0 22054207 379719680 61725 4294967295 134512640 135987407 3221224560 3219873040 134887483 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 92705 61725 364 364 0 92341 0
[pid=8300] vsize: 370820
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 370820

[startup+40.0042 s]
Raw data (loadavg): 0.96 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 120776 0 0 0 3721 266 0 0 25 0 1 0 22054207 388349952 76036 4294967295 134512640 135987407 3221224560 3219731584 134887898 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 94812 76036 364 364 0 94448 0
[pid=8300] vsize: 379248
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 379248

[startup+50.0051 s]
Raw data (loadavg): 0.97 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 140049 0 0 0 4675 310 0 0 25 0 1 0 22054207 414031872 95080 4294967295 134512640 135987407 3221224560 3219148144 134878078 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 101082 95080 364 364 0 100718 0
[pid=8300] vsize: 404328
Current children cumulated CPU time (s) 49.85
Current children cumulated vsize (Kb) 404328

[startup+60.0051 s]
Raw data (loadavg): 0.97 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 205269 0 0 0 5532 448 0 0 25 0 1 0 22054207 651018240 116154 4294967295 134512640 135987407 3221224560 3219635076 134636948 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 158940 116154 364 364 0 158576 0
[pid=8300] vsize: 635760
Current children cumulated CPU time (s) 59.8
Current children cumulated vsize (Kb) 635760

[startup+70.006 s]
Raw data (loadavg): 0.97 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 221829 0 0 0 6493 486 0 0 25 0 1 0 22054207 707280896 132517 4294967295 134512640 135987407 3221224560 3220423868 135480510 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 172676 132517 364 364 0 172312 0
[pid=8300] vsize: 690704
Current children cumulated CPU time (s) 69.79
Current children cumulated vsize (Kb) 690704

[startup+80.0069 s]
Raw data (loadavg): 0.98 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 241638 0 0 0 7447 529 0 0 25 0 1 0 22054207 736206848 152090 4294967295 134512640 135987407 3221224560 3220093920 134866195 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 179738 152090 364 364 0 179374 0
[pid=8300] vsize: 718952
Current children cumulated CPU time (s) 79.76
Current children cumulated vsize (Kb) 718952

[startup+90.0068 s]
Raw data (loadavg): 0.98 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 260845 0 0 0 8401 573 0 0 25 0 1 0 22054207 762159104 171061 4294967295 134512640 135987407 3221224560 3219687108 135477867 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 186074 171061 364 364 0 185710 0
[pid=8300] vsize: 744296
Current children cumulated CPU time (s) 89.74
Current children cumulated vsize (Kb) 744296

[startup+100.008 s]
Raw data (loadavg): 0.98 0.98 0.95 2/55 8300
Raw data (/proc/8300/stat): 8300 (pb2sat) R 8299 8300 4060 0 -1 0 276045 0 0 0 9367 605 0 0 25 0 1 0 22054207 833441792 186081 4294967295 134512640 135987407 3221224560 3219414736 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8300/statm): 203477 186081 364 364 0 203113 0
[pid=8300] vsize: 813908
Current children cumulated CPU time (s) 99.72
Current children cumulated vsize (Kb) 813908
One traced child (pid=8300) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 108.599
CPU time (s): 108.309
CPU user time (s): 101.721
CPU system time (s): 6.588
CPU usage (%): 99.7323
Max. virtual memory (cumulated for all children) (Kb): 813908

Verifier Data

ERROR: no interpretation found !