Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:39:25 2013

Optimize a model with 880 rows, 64080 columns and 128080 nonzeros
Presolve time: 0.10s
Presolved: 880 rows, 64080 columns, 128080 nonzeros
Variable types: 64000 continuous, 80 integer (80 binary)

Root relaxation: objective 9.113431e+04, 2269 iterations, 0.07 seconds

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

     0     0 91134.3102    0    8          - 91134.3102     -      -    0s
H    0     0                    96412.000000 91134.3102  5.47%     -    0s
H    0     0                    91279.000000 91134.3102  0.16%     -    0s
     0     0 91239.8067    0    4 91279.0000 91239.8067  0.04%     -    0s
     0     0 91239.8067    0    8 91279.0000 91239.8067  0.04%     -    0s
     0     0 91239.8067    0    4 91279.0000 91239.8067  0.04%     -    0s
     0     0 91257.6383    0    5 91279.0000 91257.6383  0.02%     -    0s
     0     0 91265.2826    0    4 91279.0000 91265.2826  0.02%     -    0s
     0     0 91266.9756    0    4 91279.0000 91266.9756  0.01%     -    1s
     0     0 91269.8740    0    4 91279.0000 91269.8740  0.01%     -    1s

Cutting planes:
  Implied bound: 37
  Flow cover: 6

Explored 0 nodes (4500 simplex iterations) in 1.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.127900000000e+04, best bound 9.126987403414e+04, gap 0.0100%