Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:10:52 2013

Optimize a model with 25600 rows, 25100 columns and 100100 nonzeros
Presolve removed 50 rows and 0 columns
Presolve time: 0.11s
Presolved: 25550 rows, 25100 columns, 100050 nonzeros
Variable types: 25050 continuous, 50 integer (50 binary)

Root relaxation: objective 5.273858e+04, 4823 iterations, 2.13 seconds

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

     0     0 52738.5828    0   42          - 52738.5828     -      -    2s
H    0     0                    69691.000000 52738.5828  24.3%     -    3s
     0     0 66527.3089    0    5 69691.0000 66527.3089  4.54%     -    5s
H    0     0                    67661.729179 66527.3089  1.68%     -    5s
H    0     0                    66844.000000 66527.3089  0.47%     -    5s
     0     0 66566.5626    0    3 66844.0000 66566.5626  0.42%     -    5s
H    0     0                    66607.000000 66566.5626  0.06%     -    5s
     0     0 66570.6429    0    1 66607.0000 66570.6429  0.05%     -    5s
     0     0 66606.4375    0    1 66607.0000 66606.4375  0.00%     -    6s

Cutting planes:
  Implied bound: 44

Explored 0 nodes (8016 simplex iterations) in 6.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.660700000000e+04, best bound 6.660643750000e+04, gap 0.0008%