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-v2-13-7/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos17.opb
MD5SUM0094639e675238eae16e44b5d375cf2e
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2035518
Optimality of the best value was proved NO
Number of terms in the objective function 1610
Biggest coefficient in the objective function 3457920
Number of bits for the biggest coefficient in the objective function 22
Sum of the numbers in the objective function 13794172
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 1638400000000
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 39322360302947
Number of bits of the biggest sum of numbers46
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1258.77
Number of variables2300
Total number of constraints971
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)300
Number of constraints which are nor clauses,nor cardinality constraints671
Minimum length of a constraint1
Maximum length of a constraint520

Trace number 10554

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-23 18:59:15 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9312 boxname=wulflinc27 idbench=1108 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  0094639e675238eae16e44b5d375cf2e  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-neos17.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-neos17.opb
IDLAUNCH: 9312
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.039
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		: 451.039
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:        928080 kB
Buffers:         12564 kB
Cached:          76788 kB
SwapCached:          0 kB
Active:          46336 kB
Inactive:        45884 kB
HighTotal:      131008 kB
HighFree:        49812 kB
LowTotal:       903652 kB
LowFree:        878268 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8716 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 19:00:47 (client local time) WITH STATUS 0 IN 90.1643 SECONDS
stats: 9312 7 90.1643 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22496905 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/11357/statm): 373 2 364 364 0 9 0
[pid=11357] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-neos17.opb

[startup+10.0017 s]
Raw data (loadavg): 0.93 0.98 0.94 2/55 11357
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 27880 0 0 0 929 68 0 0 25 0 1 0 22496905 80175104 16718 4294967295 134512640 135987407 3221224560 3221163404 135480425 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11357/statm): 19574 16718 364 364 0 19210 0
[pid=11357] vsize: 78296
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 78296

[startup+20.0026 s]
Raw data (loadavg): 0.94 0.98 0.94 2/55 11357
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 55979 0 0 0 1865 130 0 0 25 0 1 0 22496905 159383552 33570 4294967295 134512640 135987407 3221224560 3221187472 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11357/statm): 38912 33570 364 364 0 38548 0
[pid=11357] vsize: 155648
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 155648

[startup+30.0034 s]
Raw data (loadavg): 0.95 0.98 0.94 2/55 11357
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 95062 0 0 0 2778 214 0 0 25 0 1 0 22496905 310362112 50451 4294967295 134512640 135987407 3221224560 3221186340 135477864 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11357/statm): 75772 50451 364 364 0 75408 0
[pid=11357] vsize: 303088
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 303088

[startup+40.0032 s]
Raw data (loadavg): 0.96 0.98 0.94 2/55 11357
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 110772 0 0 0 3738 254 0 0 25 0 1 0 22496905 315244544 65890 4294967295 134512640 135987407 3221224560 3221191084 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11357/statm): 76964 65890 364 364 0 76600 0
[pid=11357] vsize: 307856
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 307856

[startup+50.004 s]
Raw data (loadavg): 0.96 0.98 0.94 3/58 11398
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 152760 0 0 0 4646 341 0 0 25 0 1 0 22496905 444194816 88242 4294967295 134512640 135987407 3221224560 3221192704 134878092 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11357/statm): 108446 88242 364 364 0 108082 0
[pid=11357] vsize: 433784
Current children cumulated CPU time (s) 49.87
Current children cumulated vsize (Kb) 433784

[startup+60.0048 s]
Raw data (loadavg): 0.97 0.98 0.94 2/55 11412
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 188846 0 0 0 5564 423 0 0 25 0 1 0 22496905 582602752 99557 4294967295 134512640 135987407 3221224560 3221180016 134802855 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11357/statm): 142237 99558 364 364 0 141873 0
[pid=11357] vsize: 568948
Current children cumulated CPU time (s) 59.87
Current children cumulated vsize (Kb) 568948

[startup+70.0046 s]
Raw data (loadavg): 0.97 0.98 0.94 2/55 11412
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 205104 0 0 0 6527 459 0 0 25 0 1 0 22496905 588419072 115538 4294967295 134512640 135987407 3221224560 3221176004 134635357 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11357/statm): 143657 115538 364 364 0 143293 0
[pid=11357] vsize: 574628
Current children cumulated CPU time (s) 69.86
Current children cumulated vsize (Kb) 574628

[startup+80.0055 s]
Raw data (loadavg): 0.98 0.98 0.94 2/55 11412
Raw data (/proc/11357/stat): 11357 (pb2sat) R 11356 11357 4005 0 -1 0 221069 0 0 0 7493 493 0 0 25 0 1 0 22496905 593764352 131224 4294967295 134512640 135987407 3221224560 3221173216 134533904 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11357/statm): 144962 131224 364 364 0 144598 0
[pid=11357] vsize: 579848
Current children cumulated CPU time (s) 79.86
Current children cumulated vsize (Kb) 579848



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+89.9995 s]
Raw data (loadavg): 0.98 0.98 0.94 1/55 11412
Raw data (/proc/11357/stat): 11357 (pb2sat) T 11356 11357 4005 0 -1 0 238197 0 0 0 8455 530 0 0 25 0 1 0 22496905 943730688 148001 4294967295 134512640 135987407 3221224560 3221172892 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/11357/statm): 230403 148001 364 364 0 230039 0
[pid=11357] vsize: 921612
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 921612

Sending SIGTERM to -11357
Sleeping 2 seconds

[startup+90.0053 s]
Raw data (loadavg): 0.98 0.98 0.94 1/56 11413
Raw data (/proc/11357/stat): 11357 (pb2sat) S 11356 11357 4005 0 -1 0 238198 0 0 0 8455 530 0 0 25 0 1 0 22496905 943730688 148002 4294967295 134512640 135987407 3221224560 3221171592 135549753 0 16384 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11357/statm): 230403 148002 364 364 0 230039 0
[pid=11357] vsize: 921612
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 921612
Sending SIGKILL to -11357
One traced child (pid=11357) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 92.3083
CPU time (s): 90.1643
CPU user time (s): 84.5551
CPU system time (s): 5.60915
CPU usage (%): 97.6774
Max. virtual memory (cumulated for all children) (Kb): 921612

Verifier Data

ERROR: no interpretation found !