Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:23:00 2013

Optimize a model with 616 rows, 31416 columns and 62776 nonzeros
Presolve time: 0.04s
Presolved: 616 rows, 31416 columns, 62776 nonzeros
Variable types: 31360 continuous, 56 integer (56 binary)

Root relaxation: objective 6.095308e+04, 1249 iterations, 0.03 seconds

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

     0     0 60953.0783    0    4          - 60953.0783     -      -    0s
H    0     0                    62498.000000 60953.0783  2.47%     -    0s
H    0     0                    61832.000000 60953.0783  1.42%     -    0s
     0     0 61124.9637    0    5 61832.0000 61124.9637  1.14%     -    0s
     0     0 61173.9080    0    3 61832.0000 61173.9080  1.06%     -    0s
     0     0 61175.7737    0    3 61832.0000 61175.7737  1.06%     -    0s
     0     0 61175.7737    0    4 61832.0000 61175.7737  1.06%     -    0s
     0     0 61175.7737    0    5 61832.0000 61175.7737  1.06%     -    0s
     0     0 61175.7737    0    3 61832.0000 61175.7737  1.06%     -    0s
     0     0 61178.5559    0    3 61832.0000 61178.5559  1.06%     -    0s
     0     0 61178.5559    0    3 61832.0000 61178.5559  1.06%     -    0s
     0     2 61188.6331    0    3 61832.0000 61188.6331  1.04%     -    0s
H    5     4                    61551.000000 61271.5241  0.45%  32.2    0s
H    7     4                    61372.337017 61271.5241  0.16%  34.4    0s
*    9     4               8    61309.000000 61271.5241  0.06%  34.0    0s

Cutting planes:
  Implied bound: 64

Explored 13 nodes (3293 simplex iterations) in 0.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.130900000000e+04, best bound 6.130900000000e+04, gap 0.0%