Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:57 2013

Optimize a model with 440 rows, 16040 columns and 32040 nonzeros
Presolve time: 0.02s
Presolved: 440 rows, 16040 columns, 32040 nonzeros
Variable types: 16000 continuous, 40 integer (40 binary)

Root relaxation: objective 4.254092e+04, 753 iterations, 0.02 seconds

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

     0     0 42540.9169    0    6          - 42540.9169     -      -    0s
H    0     0                    43302.000000 42540.9169  1.76%     -    0s
     0     0 42900.1044    0    3 43302.0000 42900.1044  0.93%     -    0s
H    0     0                    42992.000000 42900.1044  0.21%     -    0s
     0     0 42910.4238    0    3 42992.0000 42910.4238  0.19%     -    0s
     0     0 42941.5670    0    4 42992.0000 42941.5670  0.12%     -    0s
     0     0 42950.1962    0    3 42992.0000 42950.1962  0.10%     -    0s
     0     0 42976.9231    0    2 42992.0000 42976.9231  0.04%     -    0s
H    0     0                    42988.000000 42976.9231  0.03%     -    0s
     0     0 42976.9231    0    4 42988.0000 42976.9231  0.03%     -    0s
     0     0 42985.0971    0    2 42988.0000 42985.0971  0.01%     -    0s

Cutting planes:
  Implied bound: 35
  Flow cover: 2

Explored 0 nodes (1528 simplex iterations) in 0.30 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.298800000000e+04, best bound 4.298509705882e+04, gap 0.0068%