Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:51:28 2013

Optimize a model with 10700 rows, 1600 columns and 32800 nonzeros
Presolve removed 1860 rows and 833 columns
Presolve time: 0.07s
Presolved: 8840 rows, 767 columns, 27147 nonzeros
Variable types: 17 continuous, 750 integer (750 binary)
Found heuristic solution: objective 37888.000000

Root relaxation: objective 2.892339e+04, 3552 iterations, 0.12 seconds

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

     0     0 28923.3939    0    9 37888.0000 28923.3939  23.7%     -    0s
H    0     0                    28942.000000 28923.3939  0.06%     -    0s
H    0     0                    28938.000000 28923.3939  0.05%     -    0s
     0     0 28924.2443    0   26 28938.0000 28924.2443  0.05%     -    0s
     0     0 28924.2443    0    8 28938.0000 28924.2443  0.05%     -    0s
H    0     0                    28936.000000 28924.2443  0.04%     -    0s
     0     0 28924.2443    0   26 28936.0000 28924.2443  0.04%     -    0s
H    0     0                    28935.000000 28924.2443  0.04%     -    0s
     0     1 28924.2915    0   26 28935.0000 28924.2915  0.04%     -    0s
H  355   106                    28931.000000 28926.3629  0.02%  11.1    0s
*  802    57              42    28930.000000 28928.0869  0.01%   9.7    0s

Cutting planes:
  Gomory: 5
  Cover: 8
  Implied bound: 3
  MIR: 35
  Zero half: 7

Explored 803 nodes (11736 simplex iterations) in 0.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.893000000000e+04, best bound 2.892900000000e+04, gap 0.0035%