Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:12:12 2013

Optimize a model with 60214 rows, 59444 columns and 237314 nonzeros
Presolve removed 77 rows and 0 columns
Presolve time: 0.27s
Presolved: 60137 rows, 59444 columns, 237237 nonzeros
Variable types: 59367 continuous, 77 integer (77 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7219    6.7320911e+04   2.597143e+02   0.000000e+00      5s
    7490    6.7343606e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 6.734361e+04, 7490 iterations, 5.50 seconds

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

     0     0 67343.6060    0   58          - 67343.6060     -      -    6s
H    0     0                    117410.00000 67343.6060  42.6%     -    9s
     0     0 84179.8814    0   19 117410.000 84179.8814  28.3%     -   19s
H    0     0                    114157.99844 84179.8814  26.3%     -   19s
H    0     0                    98944.000000 84179.8814  14.9%     -   19s
     0     0 88004.6125    0    8 98944.0000 88004.6125  11.1%     -   22s
H    0     0                    95798.411938 88004.6125  8.14%     -   22s
H    0     0                    94140.000000 88004.6125  6.52%     -   22s
H    0     0                    88167.000000 88004.6125  0.18%     -   23s
     0     0 88123.1398    0    5 88167.0000 88123.1398  0.05%     -   23s
     0     0 88144.3740    0    4 88167.0000 88144.3740  0.03%     -   24s
     0     0 88146.6325    0    2 88167.0000 88146.6325  0.02%     -   24s
     0     0     cutoff    0      88167.0000 88167.0000   0.0%     -   25s

Cutting planes:
  Implied bound: 70

Explored 0 nodes (16061 simplex iterations) in 25.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.816700000000e+04, best bound 8.816700000000e+04, gap 0.0%