Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:03:14 2013

Optimize a model with 58672 rows, 57912 columns and 231192 nonzeros
Presolve removed 76 rows and 0 columns
Presolve time: 0.28s
Presolved: 58596 rows, 57912 columns, 231116 nonzeros
Variable types: 57836 continuous, 76 integer (76 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7270    6.5817782e+04   4.826111e+04   0.000000e+00      5s
    8246    6.6112159e+04   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 6.611216e+04, 8246 iterations, 7.08 seconds

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

     0     0 66112.1589    0   58          - 66112.1589     -      -    7s
H    0     0                    119060.00000 66112.1589  44.5%     -   11s
     0     0 84201.0041    0   16 119060.000 84201.0041  29.3%     -   23s
H    0     0                    118433.06529 84201.0041  28.9%     -   23s
H    0     0                    97439.000000 84201.0041  13.6%     -   24s
     0     0 91245.8912    0   10 97439.0000 91245.8912  6.36%     -   27s
     0     0 92248.9532    0    3 97439.0000 92248.9532  5.33%     -   28s
H    0     0                    97200.000000 92248.9532  5.09%     -   28s
H    0     0                    94910.309800 92248.9532  2.80%     -   29s
H    0     0                    94880.256410 92248.9532  2.77%     -   29s
     0     2 92249.0990    0    3 94880.2564 92249.0990  2.77%     -   31s
H    4     4                    94039.000000 92298.8040  1.85%   124   31s
*    6     3               6    92315.000000 92307.9143  0.01%   108   32s

Cutting planes:
  Gomory: 1
  Implied bound: 74

Explored 7 nodes (20368 simplex iterations) in 32.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.231500000000e+04, best bound 9.230791428571e+04, gap 0.0077%