Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:02 2013

Optimize a model with 17343 rows, 2209 columns and 53016 nonzeros
Presolve removed 1774 rows and 1122 columns
Presolve time: 0.11s
Presolved: 15569 rows, 1087 columns, 47631 nonzeros
Variable types: 21 continuous, 1066 integer (1066 binary)
Found heuristic solution: objective 51110.000000

Root relaxation: objective 3.899712e+04, 7866 iterations, 0.42 seconds

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

     0     0 38997.1250    0    8 51110.0000 38997.1250  23.7%     -    0s
H    0     0                    39009.000000 38997.1250  0.03%     -    0s
H    0     0                    39003.000000 38997.1250  0.02%     -    0s
     0     0 38998.0000    0   11 39003.0000 38998.0000  0.01%     -    0s
     0     0 38998.0000    0    8 39003.0000 38998.0000  0.01%     -    0s
H    0     0                    39001.000000 38998.0000  0.01%     -    0s

Explored 0 nodes (8172 simplex iterations) in 0.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.900100000000e+04, best bound 3.899800000000e+04, gap 0.0077%