Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:14:19 2013

Optimize a model with 572 rows, 27092 columns and 54132 nonzeros
Presolve time: 0.04s
Presolved: 572 rows, 27092 columns, 54132 nonzeros
Variable types: 27040 continuous, 52 integer (52 binary)

Root relaxation: objective 5.854310e+04, 1142 iterations, 0.03 seconds

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

     0     0 58543.1034    0    6          - 58543.1034     -      -    0s
H    0     0                    61230.000000 58543.1034  4.39%     -    0s
     0     0 58704.9513    0    6 61230.0000 58704.9513  4.12%     -    0s
     0     0 58742.4949    0    3 61230.0000 58742.4949  4.06%     -    0s
H    0     0                    60014.818201 58742.4949  2.12%     -    0s
H    0     0                    59771.000000 58742.4949  1.72%     -    0s
     0     0 58749.1089    0    3 59771.0000 58749.1089  1.71%     -    0s
     0     0 58749.1175    0    3 59771.0000 58749.1175  1.71%     -    0s
H    0     0                    59702.000000 58749.1175  1.60%     -    0s
     0     0 58749.1175    0    3 59702.0000 58749.1175  1.60%     -    0s
H    0     0                    58937.000000 58749.1175  0.32%     -    0s
H    0     0                    58808.000000 58749.1175  0.10%     -    0s
     0     0 58749.1175    0    5 58808.0000 58749.1175  0.10%     -    0s
     0     0 58798.4706    0    1 58808.0000 58798.4706  0.02%     -    0s
     0     0 58803.4706    0    1 58808.0000 58803.4706  0.01%     -    0s

Cutting planes:
  Implied bound: 23
  Flow cover: 3

Explored 0 nodes (2387 simplex iterations) in 0.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.880800000000e+04, best bound 5.880347058824e+04, gap 0.0077%