Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:32 2013

Optimize a model with 64 rows, 2110 columns and 24118 nonzeros
Presolve removed 22 rows and 78 columns
Presolve time: 0.09s
Presolved: 42 rows, 2032 columns, 22062 nonzeros
Variable types: 2014 continuous, 18 integer (18 binary)

Root relaxation: objective 5.497312e+03, 20 iterations, 0.00 seconds

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

     0     0 5497.31217    0    7          - 5497.31217     -      -    0s
     0     0 5497.88060    0    7          - 5497.88060     -      -    0s
     0     0 5497.88291    0    7          - 5497.88291     -      -    0s
     0     0 5501.77791    0    6          - 5501.77791     -      -    0s
     0     0 5501.77791    0    6          - 5501.77791     -      -    0s
H    0     0                    5511.1005242 5501.77791  0.17%     -    0s
     0     0 5503.88405    0    3 5511.10052 5503.88405  0.13%     -    0s
     0     0 5503.88819    0    5 5511.10052 5503.88819  0.13%     -    0s
     0     2 5503.90358    0    5 5511.10052 5503.90358  0.13%     -    0s
H    1     2                    5503.9233314 5503.90358  0.00%   6.0    0s

Explored 2 nodes (116 simplex iterations) in 0.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503923331361e+03, best bound 5.503903579236e+03, gap 0.0004%