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-qap10.opb
MD5SUM8504dbc55a414805ff1a65155550ce21
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 188
Optimality of the best value was proved NO
Number of terms in the objective function 33930
Biggest coefficient in the objective function 204800
Number of bits for the biggest coefficient in the objective function 18
Sum of the numbers in the objective function 188622348
Number of bits of the sum of numbers in the objective function 28
Biggest number in a constraint 204800
Number of bits of the biggest number in a constraint 18
Biggest sum of numbers in a constraint 188622348
Number of bits of the biggest sum of numbers28
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.42
Number of variables53950
Total number of constraints1820
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 constraints1820
Minimum length of a constraint130
Maximum length of a constraint130

Trace number 10562

Launcher Data

LAUNCH ON wulflinc10 THE 2005-09-23 19:02:04 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9325 boxname=wulflinc10 idbench=1121 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  8504dbc55a414805ff1a65155550ce21  /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-qap10.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-qap10.opb
IDLAUNCH: 9325
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.193
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		: 451.193
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:        923608 kB
Buffers:         12736 kB
Cached:          80832 kB
SwapCached:          0 kB
Active:          49784 kB
Inactive:        46664 kB
HighTotal:      131008 kB
HighFree:        46284 kB
LowTotal:       903652 kB
LowFree:        877324 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             9044 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 19:03:52 (client local time) WITH STATUS 0 IN 104.823 SECONDS
stats: 9325 7 104.823 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/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 22553508 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 373 2 364 364 0 9 0
[pid=9885] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-qap10.opb

[startup+10.0021 s]
Raw data (loadavg): 0.94 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 2579 0 0 0 992 6 0 0 25 0 1 0 22553508 9641984 1892 4294967295 134512640 135987407 3221224560 3221221872 134555863 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 2354 1892 364 364 0 1990 0
[pid=9885] vsize: 9416
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 9416

[startup+20.0027 s]
Raw data (loadavg): 0.95 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 3059 0 0 0 1990 8 0 0 25 0 1 0 22553508 10858496 2364 4294967295 134512640 135987407 3221224560 3221221872 134555861 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 2651 2364 364 364 0 2287 0
[pid=9885] vsize: 10604
Current children cumulated CPU time (s) 19.98
Current children cumulated vsize (Kb) 10604

[startup+30.0023 s]
Raw data (loadavg): 0.96 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 27796 0 0 0 2931 65 0 0 25 0 1 0 22553508 85467136 16417 4294967295 134512640 135987407 3221224560 3221191344 135487881 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 20866 16417 364 364 0 20502 0
[pid=9885] vsize: 83464
Current children cumulated CPU time (s) 29.96
Current children cumulated vsize (Kb) 83464

[startup+40.0028 s]
Raw data (loadavg): 0.97 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 56941 0 0 0 3862 133 0 0 25 0 1 0 22553508 163180544 34297 4294967295 134512640 135987407 3221224560 3221202524 134636944 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 39839 34297 364 364 0 39475 0
[pid=9885] vsize: 159356
Current children cumulated CPU time (s) 39.95
Current children cumulated vsize (Kb) 159356

[startup+50.0034 s]
Raw data (loadavg): 0.97 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 97350 0 0 0 4771 222 0 0 25 0 1 0 22553508 313876480 52482 4294967295 134512640 135987407 3221224560 3221214144 134866000 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 76630 52482 364 364 0 76266 0
[pid=9885] vsize: 306520
Current children cumulated CPU time (s) 49.93
Current children cumulated vsize (Kb) 306520

[startup+60.0049 s]
Raw data (loadavg): 0.97 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 115230 0 0 0 5726 266 0 0 25 0 1 0 22553508 319148032 70061 4294967295 134512640 135987407 3221224560 3221209936 134537472 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 77917 70061 364 364 0 77553 0
[pid=9885] vsize: 311668
Current children cumulated CPU time (s) 59.92
Current children cumulated vsize (Kb) 311668

[startup+70.0055 s]
Raw data (loadavg): 0.98 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 180584 0 0 0 6584 403 0 0 25 0 1 0 22553508 548700160 91229 4294967295 134512640 135987407 3221224560 3221196316 135480480 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 133960 91229 364 364 0 133596 0
[pid=9885] vsize: 535840
Current children cumulated CPU time (s) 69.87
Current children cumulated vsize (Kb) 535840

[startup+80.0061 s]
Raw data (loadavg): 0.98 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 195928 0 0 0 7544 444 0 0 25 0 1 0 22553508 586985472 106314 4294967295 134512640 135987407 3221224560 3221185920 134866218 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 143307 106314 364 364 0 142943 0
[pid=9885] vsize: 573228
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 573228

[startup+90.0066 s]
Raw data (loadavg): 0.98 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 213685 0 0 0 8497 491 0 0 25 0 1 0 22553508 591851520 123773 4294967295 134512640 135987407 3221224560 3221194376 135487877 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 144495 123773 364 364 0 144131 0
[pid=9885] vsize: 577980
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 577980

[startup+100.006 s]
Raw data (loadavg): 0.98 0.97 0.92 2/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) R 9884 9885 4061 0 -1 0 227739 0 0 0 9460 527 0 0 25 0 1 0 22553508 646103040 137590 4294967295 134512640 135987407 3221224560 3221202232 134636909 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9885/statm): 157740 137590 364 364 0 157376 0
[pid=9885] vsize: 630960
Current children cumulated CPU time (s) 99.87
Current children cumulated vsize (Kb) 630960



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+104.587 s]
Raw data (loadavg): 0.99 0.97 0.92 1/55 9885
Raw data (/proc/9885/stat): 9885 (pb2sat) T 9884 9885 4061 0 -1 0 240579 0 0 0 9887 556 0 0 25 0 1 0 22553508 943755264 150137 4294967295 134512640 135987407 3221224560 3221179276 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9885/statm): 230409 150137 364 364 0 230045 0
[pid=9885] vsize: 921636
Current children cumulated CPU time (s) 104.43
Current children cumulated vsize (Kb) 921636

Sending SIGTERM to -9885
Sleeping 2 seconds
Sending SIGKILL to -9885
One traced child (pid=9885) 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): 106.9
CPU time (s): 104.823
CPU user time (s): 98.946
CPU system time (s): 5.87711
CPU usage (%): 98.0567
Max. virtual memory (cumulated for all children) (Kb): 921636

Verifier Data

ERROR: no interpretation found !