Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:54:20 2013

Optimize a model with 2420 rows, 484220 columns and 968220 nonzeros
Presolve time: 1.48s
Presolved: 2420 rows, 484220 columns, 968220 nonzeros
Variable types: 484000 continuous, 220 integer (220 binary)

Root relaxation: objective 5.599517e+05, 15324 iterations, 2.38 seconds

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

     0     0 559951.747    0    5          - 559951.747     -      -    4s
H    0     0                    593064.00000 559951.747  5.58%     -    6s
     0     0 560226.679    0    5 593064.000 560226.679  5.54%     -    9s
     0     0 560272.115    0    3 593064.000 560272.115  5.53%     -   11s
H    0     0                    576435.38209 560272.115  2.80%     -   11s
H    0     0                    575325.00000 560272.115  2.62%     -   11s
     0     0 560275.078    0    4 575325.000 560275.078  2.62%     -   12s
H    0     0                    575273.00000 560275.078  2.61%     -   12s
     0     0 560279.435    0    3 575273.000 560279.435  2.61%     -   13s
     0     0 560283.882    0    4 575273.000 560283.882  2.61%     -   14s
     0     0 560284.298    0    3 575273.000 560284.298  2.61%     -   15s
H    0     0                    575161.00000 560284.298  2.59%     -   15s
     0     0 560284.298    0    3 575161.000 560284.298  2.59%     -   16s
H    0     0                    562736.00000 560284.298  0.44%     -   19s
     0     0 560284.298    0    5 562736.000 560284.298  0.44%     -   23s
     0     0 560284.298    0    5 562736.000 560284.298  0.44%     -   24s
     0     0 560284.298    0    3 562736.000 560284.298  0.44%     -   25s
     0     0 560284.298    0    4 562736.000 560284.298  0.44%     -   25s
     0     0 560284.298    0    4 562736.000 560284.298  0.44%     -   26s
     0     0 560284.298    0    3 562736.000 560284.298  0.44%     -   26s
     0     0 560284.298    0    3 562736.000 560284.298  0.44%     -   27s
     0     0 560284.298    0    3 562736.000 560284.298  0.44%     -   27s
     0     0 560284.298    0    3 562736.000 560284.298  0.44%     -   28s
     0     2 560288.489    0    3 562736.000 560288.489  0.43%     -   30s
     9    11 560798.893    8    1 562736.000 560422.042  0.41%   219   35s
H   16    13                    561645.00000 560422.042  0.22%   192   38s
H   23    11                    561455.00000 560422.042  0.18%   141   38s
*   24    12              22    561413.00000 560422.042  0.18%   136   38s
    28    13 560787.450    4    4 561413.000 560501.096  0.16%   144   40s
    50    14 560797.121    5    1 561413.000 560727.946  0.12%   167   45s
    72    11 560996.458    7    1 561413.000 560805.352  0.11%   184   50s

Cutting planes:
  Implied bound: 173
  Flow cover: 9

Explored 92 nodes (41692 simplex iterations) in 54.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.614130000000e+05, best bound 5.613574332587e+05, gap 0.0099%