Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:28:04 2013

Optimize a model with 1980 rows, 324180 columns and 648180 nonzeros
Presolve time: 0.92s
Presolved: 1980 rows, 324180 columns, 648180 nonzeros
Variable types: 324000 continuous, 180 integer (180 binary)

Root relaxation: objective 2.995573e+05, 11410 iterations, 1.15 seconds

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

     0     0 299557.295    0    7          - 299557.295     -      -    2s
H    0     0                    320946.00000 299557.295  6.66%     -    3s
H    0     0                    309329.00000 299557.295  3.16%     -    4s
     0     0 299854.200    0    5 309329.000 299854.200  3.06%     -    5s
     0     0 299866.797    0    5 309329.000 299866.797  3.06%     -    6s
     0     0 299867.014    0    5 309329.000 299867.014  3.06%     -    6s
     0     0 299867.259    0    5 309329.000 299867.259  3.06%     -    7s
     0     0 299867.259    0    5 309329.000 299867.259  3.06%     -    8s
H    0     0                    305604.00000 299867.259  1.88%     -   10s
     0     0 299867.259    0    7 305604.000 299867.259  1.88%     -   12s
     0     0 299867.259    0    5 305604.000 299867.259  1.88%     -   13s
     0     0 299867.259    0    5 305604.000 299867.259  1.88%     -   13s
     0     0 299867.259    0    5 305604.000 299867.259  1.88%     -   14s
     0     0 299867.259    0    5 305604.000 299867.259  1.88%     -   14s
     0     0 299867.259    0    5 305604.000 299867.259  1.88%     -   15s
     0     2 299872.118    0    5 305604.000 299872.118  1.88%     -   17s
     6     8 300395.088    5    2 305604.000 300135.327  1.79%   290   20s
H    8     8                    304845.53488 300135.327  1.55%   225   20s
H   15    15                    304620.00000 300135.327  1.47%   155   21s
H   17    16                    303629.00000 300135.327  1.15%   149   22s
H   29    20                    301968.00000 300135.327  0.61%   107   24s
    34    23 300836.455   33    1 301968.000 300135.327  0.61%  94.5   25s
H   38    21                    301794.00000 300135.327  0.55%  85.4   25s
H   42    20                    301725.00000 300135.327  0.53%  78.3   25s
*   43    21              41    301675.00000 300135.327  0.51%  77.3   25s
*   49    13               6    300834.00000 300171.181  0.22%  91.6   26s
*   68    13              10    300687.00000 300203.854  0.16%   109   29s
    73    11 300686.730    7    1 300687.000 300264.918  0.14%   113   30s

Cutting planes:
  Implied bound: 198
  Flow cover: 4

Explored 85 nodes (30537 simplex iterations) in 30.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.006870000000e+05, best bound 3.006870000000e+05, gap 0.0%