Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:16:52 2013

Optimize a model with 28726 rows, 28196 columns and 112466 nonzeros
Presolve removed 53 rows and 0 columns
Presolve time: 0.12s
Presolved: 28673 rows, 28196 columns, 112413 nonzeros
Variable types: 28143 continuous, 53 integer (53 binary)

Root relaxation: objective 4.697458e+04, 3464 iterations, 1.12 seconds

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

     0     0 46974.5815    0   47          - 46974.5815     -      -    1s
H    0     0                    63644.000000 46974.5815  26.2%     -    2s
     0     0 54195.9873    0    4 63644.0000 54195.9873  14.8%     -    4s
H    0     0                    56421.207046 54195.9873  3.94%     -    4s
H    0     0                    55686.000000 54195.9873  2.68%     -    4s
     0     0 54557.8875    0    9 55686.0000 54557.8875  2.03%     -    4s
H    0     0                    54712.000000 54557.8875  0.28%     -    4s
     0     0 54558.3071    0    3 54712.0000 54558.3071  0.28%     -    4s
     0     0 54570.0346    0    2 54712.0000 54570.0346  0.26%     -    5s
     0     2 54570.1429    0    2 54712.0000 54570.1429  0.26%     -    5s
*    5     3               4    54595.000000 54579.1273  0.03%  76.6    5s
*    8     1               2    54594.000000 54585.1553  0.02%  60.8    5s

Cutting planes:
  Implied bound: 48

Explored 10 nodes (6342 simplex iterations) in 5.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.459400000000e+04, best bound 5.459400000000e+04, gap 0.0%