Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:48:23 2013

Optimize a model with 2400 rows, 101200 columns and 204100 nonzeros
Presolve removed 400 rows and 300 columns
Presolve time: 0.39s
Presolved: 2000 rows, 100900 columns, 203000 nonzeros
Variable types: 100500 continuous, 400 integer (400 binary)

Root relaxation: objective 8.654105e+05, 8712 iterations, 0.94 seconds

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

     0     0 865410.545    0    2          - 865410.545     -      -    1s
H    0     0                    898678.98797 865410.545  3.70%     -    1s
     0     2 865439.323    0    2 898678.988 865439.323  3.70%     -    2s
    13    15 867106.907   12    1 898678.988 866144.143  3.62%   115    5s
H   27    14                    869098.88645 866144.143  0.34%  75.2    6s
H   31    11                    868005.76937 866144.143  0.21%  70.0    7s
H   46    11                    866903.46634 866686.522  0.03%  68.9    8s
H   48     7                    866846.99594 866686.522  0.02%  66.4    8s

Explored 55 nodes (12029 simplex iterations) in 8.46 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.668469959374e+05, best bound 8.667719700645e+05, gap 0.0087%