Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:37 2013

Optimize a model with 1032 rows, 2046 columns and 7090 nonzeros
Presolve removed 26 rows and 466 columns
Presolve time: 0.15s
Presolved: 1006 rows, 1580 columns, 4719 nonzeros
Variable types: 1018 continuous, 562 integer (562 binary)

Root relaxation: objective 4.813319e+03, 15 iterations, 0.00 seconds

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

     0     0 4813.31891    0    2          - 4813.31891     -      -    0s
     0     0 4814.01341    0    3          - 4814.01341     -      -    0s
     0     0 4828.28879    0    2          - 4828.28879     -      -    0s
     0     0 4830.81925    0    4          - 4830.81925     -      -    0s
     0     2 4830.81925    0    4          - 4830.81925     -      -    0s
H    6     6                    4832.0930826 4830.99392  0.02%   0.7    0s
*   27     1              20    4831.1210937 4831.12088  0.00%   3.7    0s

Cutting planes:
  Gomory: 2

Explored 28 nodes (165 simplex iterations) in 0.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.831121093651e+03, best bound 4.831120881919e+03, gap 0.0000%