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/milp/normalized-mps-v2-20-10-dano3_5.opb
MD5SUMabd9a9e69fc2f9c2b3fcc7867082243f
Bench Categoryoptimization, big integers (OPTBIGINT)
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 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 134217728000
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 569083166190
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables404336
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 constraint15900

Trace number 10164

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-23 17:21:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8917 boxname=wulflinc23 idbench=713 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  abd9a9e69fc2f9c2b3fcc7867082243f  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-dano3_5.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-dano3_5.opb
IDLAUNCH: 8917
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.185
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		: 451.185
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:        864528 kB
Buffers:         14808 kB
Cached:         136424 kB
SwapCached:          0 kB
Active:          98812 kB
Inactive:        55348 kB
HighTotal:      131008 kB
HighFree:         3780 kB
LowTotal:       903652 kB
LowFree:        860748 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10392 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:22:48 (client local time) WITH STATUS 0 IN 92.9319 SECONDS
stats: 8917 7 92.9319 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/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21941638 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9469/statm): 373 2 364 364 0 9 0
[pid=9469] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-dano3_5.opb

[startup+10.0022 s]
Raw data (loadavg): 0.94 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 27457 0 0 0 930 67 0 0 25 0 1 0 21941638 86642688 16337 4294967295 134512640 135987407 3221224560 3220866080 134878632 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9469/statm): 21153 16337 364 364 0 20789 0
[pid=9469] vsize: 84612
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 84612

[startup+20.0028 s]
Raw data (loadavg): 0.95 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 55333 0 0 0 1868 127 0 0 25 0 1 0 21941638 164220928 32976 4294967295 134512640 135987407 3221224560 3221164112 134878178 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 40093 32976 364 364 0 39729 0
[pid=9469] vsize: 160372
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 160372

[startup+30.0034 s]
Raw data (loadavg): 0.96 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 94740 0 0 0 2782 211 0 0 25 0 1 0 21941638 314241024 50178 4294967295 134512640 135987407 3221224560 3220833760 134877726 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 76719 50178 364 364 0 76355 0
[pid=9469] vsize: 306876
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 306876

[startup+40.0031 s]
Raw data (loadavg): 0.96 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 110932 0 0 0 3741 252 0 0 25 0 1 0 21941638 318566400 66102 4294967295 134512640 135987407 3221224560 3220990544 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 77775 66102 364 364 0 77411 0
[pid=9469] vsize: 311100
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 311100

[startup+50.0037 s]
Raw data (loadavg): 0.97 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 153280 0 0 0 4649 341 0 0 25 0 1 0 21941638 447455232 88818 4294967295 134512640 135987407 3221224560 3220967840 134856505 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 109242 88819 364 364 0 108878 0
[pid=9469] vsize: 436968
Current children cumulated CPU time (s) 49.9
Current children cumulated vsize (Kb) 436968

[startup+60.0033 s]
Raw data (loadavg): 0.97 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 189738 0 0 0 5572 418 0 0 25 0 1 0 21941638 585457664 100505 4294967295 134512640 135987407 3221224560 3221115392 134878060 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 142934 100505 364 364 0 142570 0
[pid=9469] vsize: 571736
Current children cumulated CPU time (s) 59.9
Current children cumulated vsize (Kb) 571736

[startup+70.004 s]
Raw data (loadavg): 0.98 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 205854 0 0 0 6534 456 0 0 25 0 1 0 21941638 590188544 116355 4294967295 134512640 135987407 3221224560 3220776704 134878514 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 144089 116356 364 364 0 143725 0
[pid=9469] vsize: 576356
Current children cumulated CPU time (s) 69.9
Current children cumulated vsize (Kb) 576356

[startup+80.0046 s]
Raw data (loadavg): 0.98 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 222177 0 0 0 7497 492 0 0 25 0 1 0 21941638 594243584 132408 4294967295 134512640 135987407 3221224560 3220934720 134640450 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 145079 132409 364 364 0 144715 0
[pid=9469] vsize: 580316
Current children cumulated CPU time (s) 79.89
Current children cumulated vsize (Kb) 580316

[startup+90.0042 s]
Raw data (loadavg): 0.98 0.97 0.91 2/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) R 9468 9469 4060 0 -1 0 235434 0 0 0 8463 526 0 0 25 0 1 0 21941638 648630272 145449 4294967295 134512640 135987407 3221224560 3221193856 134887322 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9469/statm): 158357 145450 364 364 0 157993 0
[pid=9469] vsize: 633428
Current children cumulated CPU time (s) 89.89
Current children cumulated vsize (Kb) 633428



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+92.7079 s]
Raw data (loadavg): 0.98 0.97 0.91 1/55 9469
Raw data (/proc/9469/stat): 9469 (pb2sat) T 9468 9469 4060 0 -1 0 244300 0 0 0 8713 545 0 0 25 0 1 0 21941638 943849472 154076 4294967295 134512640 135987407 3221224560 3221060636 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9469/statm): 230432 154076 364 364 0 230068 0
[pid=9469] vsize: 921728
Current children cumulated CPU time (s) 92.58
Current children cumulated vsize (Kb) 921728

Sending SIGTERM to -9469
Sleeping 2 seconds
Sending SIGKILL to -9469
One traced child (pid=9469) 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): 95.0317
CPU time (s): 92.9319
CPU user time (s): 87.1617
CPU system time (s): 5.77012
CPU usage (%): 97.7904
Max. virtual memory (cumulated for all children) (Kb): 921728

Verifier Data

ERROR: no interpretation found !