Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:37 2013

Optimize a model with 605 rows, 30305 columns and 60555 nonzeros
Presolve time: 0.04s
Presolved: 605 rows, 30305 columns, 60555 nonzeros
Variable types: 30250 continuous, 55 integer (55 binary)

Root relaxation: objective 6.688354e+04, 1650 iterations, 0.03 seconds

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

     0     0 66883.5357    0    9          - 66883.5357     -      -    0s
H    0     0                    72400.000000 66883.5357  7.62%     -    0s
H    0     0                    67387.000000 66883.5357  0.75%     -    0s
     0     0 67180.4704    0    6 67387.0000 67180.4704  0.31%     -    0s
     0     0 67188.9069    0    4 67387.0000 67188.9069  0.29%     -    0s
     0     0 67191.3196    0    3 67387.0000 67191.3196  0.29%     -    0s
     0     0 67191.3196    0    3 67387.0000 67191.3196  0.29%     -    0s
     0     0 67212.8749    0    5 67387.0000 67212.8749  0.26%     -    0s
     0     0 67215.5728    0    3 67387.0000 67215.5728  0.25%     -    0s
H    0     0                    67324.000000 67215.5728  0.16%     -    0s
     0     0 67215.5728    0    7 67324.0000 67215.5728  0.16%     -    0s
H    0     0                    67268.000000 67215.5728  0.08%     -    0s
     0     0 67226.3636    0    1 67268.0000 67226.3636  0.06%     -    0s
     0     0 67246.3286    0    2 67268.0000 67246.3286  0.03%     -    0s
     0     0 67257.1176    0    1 67268.0000 67257.1176  0.02%     -    0s
     0     0 67257.1176    0    1 67268.0000 67257.1176  0.02%     -    0s
     0     0 67258.6345    0    2 67268.0000 67258.6345  0.01%     -    0s
     0     0 67263.2842    0    1 67268.0000 67263.2842  0.01%     -    0s

Cutting planes:
  Implied bound: 25
  Flow cover: 1

Explored 0 nodes (3224 simplex iterations) in 0.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.726800000000e+04, best bound 6.726328421053e+04, gap 0.0070%