Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:12 2013

Optimize a model with 429 rows, 15249 columns and 30459 nonzeros
Presolve time: 0.02s
Presolved: 429 rows, 15249 columns, 30459 nonzeros
Variable types: 15210 continuous, 39 integer (39 binary)

Root relaxation: objective 3.951254e+04, 607 iterations, 0.01 seconds

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

     0     0 39512.5418    0    5          - 39512.5418     -      -    0s
H    0     0                    39787.000000 39512.5418  0.69%     -    0s
H    0     0                    39707.000000 39512.5418  0.49%     -    0s
     0     0 39598.1000    0    1 39707.0000 39598.1000  0.27%     -    0s
     0     0 39600.2667    0    1 39707.0000 39600.2667  0.27%     -    0s
     0     0 39600.4889    0    1 39707.0000 39600.4889  0.27%     -    0s
     0     0 39600.4889    0    1 39707.0000 39600.4889  0.27%     -    0s
     0     0 39600.4889    0    5 39707.0000 39600.4889  0.27%     -    0s
     0     0 39600.4889    0    1 39707.0000 39600.4889  0.27%     -    0s
     0     0 39600.4889    0    1 39707.0000 39600.4889  0.27%     -    0s
     0     0 39600.4889    0    1 39707.0000 39600.4889  0.27%     -    0s
     0     2 39612.1429    0    1 39707.0000 39612.1429  0.24%     -    0s

Cutting planes:
  Implied bound: 28
  Flow cover: 4

Explored 3 nodes (1335 simplex iterations) in 0.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.970700000000e+04, best bound 3.970409677419e+04, gap 0.0073%