Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:21:04 2013

Optimize a model with 30910 rows, 30360 columns and 121110 nonzeros
Presolve removed 55 rows and 0 columns
Presolve time: 0.13s
Presolved: 30855 rows, 30360 columns, 121055 nonzeros
Variable types: 30305 continuous, 55 integer (55 binary)

Root relaxation: objective 4.654471e+04, 3959 iterations, 1.80 seconds

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

     0     0 46544.7089    0   49          - 46544.7089     -      -    2s
H    0     0                    64179.000000 46544.7089  27.5%     -    3s
     0     0 57701.9677    0    8 64179.0000 57701.9677  10.1%     -    5s
H    0     0                    61100.467656 57701.9677  5.56%     -    5s
H    0     0                    59589.000000 57701.9677  3.17%     -    5s
H    0     0                    58032.000000 57701.9677  0.57%     -    5s
     0     0 57887.5830    0    5 58032.0000 57887.5830  0.25%     -    5s
     0     0 57918.2922    0    5 58032.0000 57918.2922  0.20%     -    6s
     0     0 57918.9129    0    4 58032.0000 57918.9129  0.19%     -    6s
     0     2 57922.6965    0    4 58032.0000 57922.6965  0.19%     -    6s
*   11     4               6    58026.000000 57970.1172  0.10%   130    7s
*   14     3               4    58020.000000 57992.8992  0.05%   106    7s

Cutting planes:
  Gomory: 1
  Implied bound: 48

Explored 21 nodes (8944 simplex iterations) in 7.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.802000000000e+04, best bound 5.802000000000e+04, gap 0.0%