Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:09 2013

Optimize a model with 18472 rows, 2304 columns and 56448 nonzeros
Presolve removed 2631 rows and 1194 columns
Presolve time: 0.13s
Presolved: 15841 rows, 1110 columns, 48197 nonzeros
Variable types: 15 continuous, 1095 integer (1095 binary)
Found heuristic solution: objective 58112.000000

Root relaxation: objective 4.759913e+04, 3793 iterations, 0.19 seconds

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

     0     0 47599.1292    0    6 58112.0000 47599.1292  18.1%     -    0s
H    0     0                    47605.000000 47599.1292  0.01%     -    0s
H    0     0                    47604.000000 47599.1292  0.01%     -    0s
     0     0 47603.0144    0   14 47604.0000 47603.0144  0.00%     -    0s

Cutting planes:
  Gomory: 3
  Implied bound: 1
  MIR: 5

Explored 0 nodes (3838 simplex iterations) in 0.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.760400000000e+04, best bound 4.760400000000e+04, gap 0.0%