Gurobi 5.0.1 (linux64) logging started Tue Apr 23 22:02:13 2013

Optimize a model with 100 rows, 2550 columns and 5050 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 100 rows, 2549 columns, 5049 nonzeros
Variable types: 2500 continuous, 49 integer (49 binary)

Root relaxation: objective 6.914080e+05, 50 iterations, 0.00 seconds

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

     0     0 691407.950    0   49          - 691407.950     -      -    0s
H    0     0                    1481571.4500 691407.950  53.3%     -    0s
H    0     0                    1312948.9375 691407.950  47.3%     -    0s
     0     0 810235.074    0   29 1312948.94 810235.074  38.3%     -    0s
H    0     0                    1289487.5234 810235.074  37.2%     -    0s
H    0     0                    1063135.9250 810235.074  23.8%     -    0s
     0     0 839991.664    0   30 1063135.92 839991.664  21.0%     -    0s
     0     0 862580.266    0   20 1063135.92 862580.266  18.9%     -    0s
     0     0 877120.235    0   23 1063135.92 877120.235  17.5%     -    0s
     0     0 882378.275    0   19 1063135.92 882378.275  17.0%     -    0s
H    0     0                    906500.96250 882378.275  2.66%     -    0s
     0     2 882470.251    0   19 906500.962 882470.251  2.65%     -    0s
*   28    19              28    898246.90000 890428.106  0.87%   3.1    0s
*   74     7              20    895600.46250 893359.927  0.25%   6.2    0s
*   76     5              19    895559.61250 893359.927  0.25%   6.1    0s
H   81     4                    895302.32500 894381.132  0.10%   6.1    0s

Cutting planes:
  Implied bound: 225
  Flow cover: 6

Explored 87 nodes (800 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.953023250000e+05, best bound 8.953023250000e+05, gap 0.0000%