Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:31:59 2013

Optimize a model with 2750 rows, 625250 columns and 1250250 nonzeros
Presolve time: 2.20s
Presolved: 2750 rows, 625250 columns, 1250250 nonzeros
Variable types: 625000 continuous, 250 integer (250 binary)

Root relaxation: objective 6.078945e+05, 20831 iterations, 4.42 seconds

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

     0     0 607894.484    0    7          - 607894.484     -      -    7s
H    0     0                    655652.00000 607894.484  7.28%     -   10s
H    0     0                    642487.00000 607894.484  5.38%     -   11s
H    0     0                    617069.00000 607894.484  1.49%     -   12s
     0     0 608184.527    0    3 617069.000 608184.527  1.44%     -   15s
     0     0 608184.527    0    7 617069.000 608184.527  1.44%     -   21s
     0     0 608186.176    0    3 617069.000 608186.176  1.44%     -   24s
     0     0 608190.320    0    4 617069.000 608190.320  1.44%     -   26s
     0     0 608191.135    0    3 617069.000 608191.135  1.44%     -   27s
     0     0 608191.135    0    3 617069.000 608191.135  1.44%     -   28s
     0     2 608224.308    0    3 617069.000 608224.308  1.43%     -   33s
     2     5 608333.024    2    3 617069.000 608333.024  1.42%   258   35s
H    6     5                    608599.00000 608405.985  0.03%   243   38s
*   12     3               8    608584.00000 608405.985  0.03%   137   39s
    14     1     cutoff    3      608584.000 608568.365  0.00%   151   40s

Cutting planes:
  Implied bound: 145
  Flow cover: 4

Explored 15 nodes (41642 simplex iterations) in 40.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.085840000000e+05, best bound 6.085683646360e+05, gap 0.0026%