Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:40 2013

Optimize a model with 480 rows, 4240 columns and 8820 nonzeros
Presolve removed 80 rows and 60 columns
Presolve time: 0.02s
Presolved: 400 rows, 4180 columns, 8600 nonzeros
Variable types: 4100 continuous, 80 integer (80 binary)

Root relaxation: objective 4.370285e+04, 544 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 43702.8549    0    2          - 43702.8549     -      -    0s
H    0     0                    44033.613407 43702.8549  0.75%     -    0s
     0     2 43709.5984    0    2 44033.6134 43709.5984  0.74%     -    0s
*    9     3               9    44000.669969 43851.2232  0.34%  11.6    0s
H   21     1                    43963.365739 43882.5680  0.18%  13.2    0s
*   22     0               4    43899.817028 43899.8170   0.0%  13.2    0s

Explored 23 nodes (835 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.389981702769e+04, best bound 4.389981702769e+04, gap 0.0%