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-dano3_5.opb
MD5SUMeaead9cf67652e4b2ad71612149d4439
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 20
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 1048575
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 131072000
Number of bits of the biggest number in a constraint 27
Biggest sum of numbers in a constraint 576307709
Number of bits of the biggest sum of numbers30
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables269983
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)120
Number of constraints which are nor clauses,nor cardinality constraints3658
Minimum length of a constraint1
Maximum length of a constraint10600

Trace number 10542

Launcher Data

LAUNCH ON wulflinc26 THE 2005-09-23 18:55:52 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9302 boxname=wulflinc26 idbench=1098 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  eaead9cf67652e4b2ad71612149d4439  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-dano3_5.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-dano3_5.opb
IDLAUNCH: 9302
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.055
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		: 451.055
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:        882556 kB
Buffers:         12300 kB
Cached:         122340 kB
SwapCached:          0 kB
Active:          68404 kB
Inactive:        69120 kB
HighTotal:      131008 kB
HighFree:        13720 kB
LowTotal:       903652 kB
LowFree:        868836 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             9056 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 18:57:26 (client local time) WITH STATUS 0 IN 91.4241 SECONDS
stats: 9302 7 91.4241 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/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22478391 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/10247/statm): 373 2 364 364 0 9 0
[pid=10247] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-dano3_5.opb

[startup+10.0019 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 27165 0 0 0 932 65 0 0 25 0 1 0 22478391 83656704 16038 4294967295 134512640 135987407 3221224560 3221084532 135477881 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/10247/statm): 20424 16039 364 364 0 20060 0
[pid=10247] vsize: 81696
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 81696

[startup+20.0026 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 55342 0 0 0 1872 123 0 0 25 0 1 0 22478391 161370112 32973 4294967295 134512640 135987407 3221224560 3221155808 135486752 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 39397 32973 364 364 0 39033 0
[pid=10247] vsize: 157588
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 157588

[startup+30.0023 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 94951 0 0 0 2787 206 0 0 25 0 1 0 22478391 311255040 50374 4294967295 134512640 135987407 3221224560 3221037040 134854865 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 75990 50374 364 364 0 75626 0
[pid=10247] vsize: 303960
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 303960

[startup+40.003 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 111518 0 0 0 3746 247 0 0 25 0 1 0 22478391 315985920 66667 4294967295 134512640 135987407 3221224560 3221099248 134557147 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 77145 66667 364 364 0 76781 0
[pid=10247] vsize: 308580
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 308580

[startup+50.0036 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 169515 0 0 0 4623 368 0 0 25 0 1 0 22478391 646070272 105053 4294967295 134512640 135987407 3221224560 3221055424 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 157732 105057 364 364 0 157368 0
[pid=10247] vsize: 630928
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 630928

[startup+60.0043 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 190918 0 0 0 5572 418 0 0 25 0 1 0 22478391 582877184 101654 4294967295 134512640 135987407 3221224560 3221164392 134861693 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 142304 101654 364 364 0 141940 0
[pid=10247] vsize: 569216
Current children cumulated CPU time (s) 59.9
Current children cumulated vsize (Kb) 569216

[startup+70.004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 207482 0 0 0 6534 456 0 0 25 0 1 0 22478391 587608064 117945 4294967295 134512640 135987407 3221224560 3221200464 134640127 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 143459 117945 364 364 0 143095 0
[pid=10247] vsize: 573836
Current children cumulated CPU time (s) 69.9
Current children cumulated vsize (Kb) 573836

[startup+80.0037 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 222240 0 0 0 7498 491 0 0 25 0 1 0 22478391 641724416 132459 4294967295 134512640 135987407 3221224560 3221067616 134877719 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 156671 132459 364 364 0 156307 0
[pid=10247] vsize: 626684
Current children cumulated CPU time (s) 79.89
Current children cumulated vsize (Kb) 626684

[startup+90.0044 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) R 10246 10247 4005 0 -1 0 237252 0 0 0 8463 527 0 0 25 0 1 0 22478391 646049792 147224 4294967295 134512640 135987407 3221224560 3220971852 135480440 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10247/statm): 157727 147224 364 364 0 157363 0
[pid=10247] vsize: 630908
Current children cumulated CPU time (s) 89.9
Current children cumulated vsize (Kb) 630908



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+91.1961 s]
Raw data (loadavg): 0.98 0.96 0.91 1/55 10247
Raw data (/proc/10247/stat): 10247 (pb2sat) T 10246 10247 4005 0 -1 0 245551 0 0 0 8565 543 0 0 25 0 1 0 22478391 943837184 155265 4294967295 134512640 135987407 3221224560 3221112380 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/10247/statm): 230429 155265 364 364 0 230065 0
[pid=10247] vsize: 921716
Current children cumulated CPU time (s) 91.08
Current children cumulated vsize (Kb) 921716

Sending SIGTERM to -10247
Sleeping 2 seconds
Sending SIGKILL to -10247
One traced child (pid=10247) 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): 93.522
CPU time (s): 91.4241
CPU user time (s): 85.671
CPU system time (s): 5.75312
CPU usage (%): 97.7568
Max. virtual memory (cumulated for all children) (Kb): 921716

Verifier Data

ERROR: no interpretation found !