Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:04 2013

Optimize a model with 12383 rows, 1764 columns and 37926 nonzeros
Presolve removed 2040 rows and 919 columns
Presolve time: 0.09s
Presolved: 10343 rows, 845 columns, 31613 nonzeros
Variable types: 15 continuous, 830 integer (830 binary)
Found heuristic solution: objective 31976.000000

Root relaxation: objective 2.585727e+04, 3495 iterations, 0.13 seconds

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

     0     0 25857.2667    0    8 31976.0000 25857.2667  19.1%     -    0s
H    0     0                    25866.000000 25857.2667  0.03%     -    0s
     0     0 25858.8901    0   14 25866.0000 25858.8901  0.03%     -    0s
     0     0 25858.8901    0    7 25866.0000 25858.8901  0.03%     -    0s
     0     0 25858.8901    0   15 25866.0000 25858.8901  0.03%     -    0s
H    0     0                    25864.000000 25858.8901  0.02%     -    0s
     0     0 25859.2357    0    7 25864.0000 25859.2357  0.02%     -    0s
     0     2 25859.3630    0    7 25864.0000 25859.3630  0.02%     -    0s

Cutting planes:
  Gomory: 8
  Cover: 4
  Implied bound: 2
  MIR: 13
  Zero half: 2

Explored 8 nodes (3879 simplex iterations) in 0.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.586400000000e+04, best bound 2.586200000000e+04, gap 0.0077%