Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:05 2013

Optimize a model with 12383 rows, 1764 columns and 37926 nonzeros
Presolve removed 997 rows and 881 columns
Presolve time: 0.05s
Presolved: 11386 rows, 883 columns, 35133 nonzeros
Variable types: 25 continuous, 858 integer (858 binary)
Found heuristic solution: objective 35211.000000

Root relaxation: objective 2.379457e+04, 5178 iterations, 0.21 seconds

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

     0     0 23794.5714    0   14 35211.0000 23794.5714  32.4%     -    0s
H    0     0                    23845.000000 23794.5714  0.21%     -    0s
H    0     0                    23818.000000 23794.5714  0.10%     -    0s
H    0     0                    23813.000000 23794.5714  0.08%     -    0s
     0     0 23795.0000    0   22 23813.0000 23795.0000  0.08%     -    0s
     0     0 23795.0000    0   11 23813.0000 23795.0000  0.08%     -    0s
H    0     0                    23810.000000 23795.0000  0.06%     -    0s
H    0     0                    23805.000000 23795.0000  0.04%     -    0s
     0     0 23795.0000    0   26 23805.0000 23795.0000  0.04%     -    0s
     0     2 23795.0000    0   24 23805.0000 23795.0000  0.04%     -    0s
H    1     2                    23802.000000 23795.0000  0.03%  57.0    0s
H    5     4                    23801.000000 23795.0000  0.03%  11.4    0s
H   10     7                    23800.000000 23795.0000  0.02%   5.7    0s

Cutting planes:
  Gomory: 9
  Cover: 62
  Implied bound: 1
  MIR: 62
  GUB cover: 2
  Zero half: 27

Explored 3231 nodes (61923 simplex iterations) in 3.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.380000000000e+04, best bound 2.379800000000e+04, gap 0.0084%