Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:10:46 2013

Optimize a model with 478 rows, 5216 columns and 146535 nonzeros
Presolve removed 20 rows and 49 columns
Presolve time: 0.75s
Presolved: 458 rows, 5167 columns, 145141 nonzeros
Variable types: 0 continuous, 5167 integer (5167 binary)
Found heuristic solution: objective 2469.0000000

Root relaxation: objective 1.789000e+03, 943 iterations, 0.09 seconds

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

     0     0 1789.00000    0   18 2469.00000 1789.00000  27.5%     -    0s
H    0     0                    1860.0000000 1789.00000  3.82%     -    0s
     0     0 1794.95000    0   86 1860.00000 1794.95000  3.50%     -    1s
H    0     0                    1845.0000000 1794.95000  2.71%     -    1s
     0     0 1794.95000    0   18 1845.00000 1794.95000  2.71%     -    1s
     0     0 1803.25000    0   30 1845.00000 1803.25000  2.26%     -    1s
H    0     0                    1828.0000000 1803.25000  1.35%     -    1s
     0     0 1806.42308    0   69 1828.00000 1806.42308  1.18%     -    1s
H    0     0                    1820.0000000 1806.42308  0.75%     -    1s
     0     1 1807.69231    0   69 1820.00000 1807.69231  0.68%     -    2s
H    1     0                    1817.0000000 1807.69231  0.51%   191    3s
*    3     2              14    1808.0000000 1808.00000   0.0%  63.7    3s

Explored 3 nodes (3642 simplex iterations) in 3.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.808000000000e+03, best bound 1.808000000000e+03, gap 0.0%