Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:57:28 2013

Optimize a model with 32567 rows, 3364 columns and 99238 nonzeros
Presolve removed 3872 rows and 1725 columns
Presolve time: 0.23s
Presolved: 28695 rows, 1639 columns, 87568 nonzeros
Variable types: 27 continuous, 1612 integer (1612 binary)
Found heuristic solution: objective 71211.000000

Root relaxation: objective 5.289762e+04, 11078 iterations, 0.73 seconds

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

     0     0 52897.6181    0    8 71211.0000 52897.6181  25.7%     -    1s
H    0     0                    52920.000000 52897.6181  0.04%     -    1s
H    0     0                    52913.000000 52897.6181  0.03%     -    1s
     0     0 52898.3277    0   24 52913.0000 52898.3277  0.03%     -    1s
     0     0 52898.3277    0    8 52913.0000 52898.3277  0.03%     -    1s
H    0     0                    52909.000000 52898.3277  0.02%     -    1s
     0     0 52898.3843    0   28 52909.0000 52898.3843  0.02%     -    1s
     0     2 52898.5229    0   28 52909.0000 52898.5229  0.02%     -    1s
H   16    10                    52907.000000 52900.6772  0.01%  41.0    1s

Cutting planes:
  Gomory: 7
  MIR: 19
  Zero half: 5

Explored 113 nodes (15188 simplex iterations) in 1.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.290700000000e+04, best bound 5.290200000000e+04, gap 0.0095%