Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:04:00 2013

Optimize a model with 45694 rows, 45024 columns and 179694 nonzeros
Presolve removed 67 rows and 0 columns
Presolve time: 0.20s
Presolved: 45627 rows, 45024 columns, 179627 nonzeros
Variable types: 44957 continuous, 67 integer (67 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7311    6.3327519e+04   7.085257e+02   0.000000e+00      5s
    7545    6.3339634e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 6.333963e+04, 7545 iterations, 5.45 seconds

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

     0     0 63339.6338    0   53          - 63339.6338     -      -    5s
H    0     0                    99415.000000 63339.6338  36.3%     -    9s
     0     0 83776.1839    0   16 99415.0000 83776.1839  15.7%     -   15s
H    0     0                    92073.000000 83776.1839  9.01%     -   15s
     0     0 85749.4119    0    5 92073.0000 85749.4119  6.87%     -   17s
H    0     0                    89999.775623 85749.4119  4.72%     -   17s
H    0     0                    89299.000000 85749.4119  3.97%     -   17s
H    0     0                    85983.000000 85749.4119  0.27%     -   17s
     0     0 85803.7547    0    3 85983.0000 85803.7547  0.21%     -   17s
     0     0 85804.0966    0    2 85983.0000 85804.0966  0.21%     -   17s
     0     2 85804.2834    0    2 85983.0000 85804.2834  0.21%     -   18s
*    4     1               4    85858.000000 85850.1964  0.01%   193   18s

Cutting planes:
  Implied bound: 65

Explored 5 nodes (16128 simplex iterations) in 18.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.585800000000e+04, best bound 8.585019642857e+04, gap 0.0091%