Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:11 2013

Optimize a model with 19844 rows, 19404 columns and 77484 nonzeros
Presolve removed 1511 rows and 0 columns
Presolve time: 0.12s
Presolved: 18333 rows, 19404 columns, 74462 nonzeros
Variable types: 19360 continuous, 44 integer (44 binary)

Root relaxation: objective 4.377487e+04, 2831 iterations, 0.22 seconds

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

     0     0 43774.8735    0    4          - 43774.8735     -      -    0s
H    0     0                    44163.000000 43774.8735  0.88%     -    0s
H    0     0                    43906.000000 43774.8735  0.30%     -    0s
     0     0 43777.7964    0    6 43906.0000 43777.7964  0.29%     -    0s
     0     0 43777.9842    0    5 43906.0000 43777.9842  0.29%     -    0s
     0     0 43778.0661    0    5 43906.0000 43778.0661  0.29%     -    0s
     0     0 43813.2857    0    1 43906.0000 43813.2857  0.21%     -    0s
H    0     0                    43886.000000 43813.2857  0.17%     -    0s
H    0     0                    43838.000000 43813.2857  0.06%     -    1s
     0     0 43827.8462    0    1 43838.0000 43827.8462  0.02%     -    1s
     0     0 43827.9352    0    2 43838.0000 43827.9352  0.02%     -    1s
H    0     0                    43828.000000 43827.9352  0.00%     -    1s

Cutting planes:
  Gomory: 1

Explored 0 nodes (3688 simplex iterations) in 1.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.382800000000e+04, best bound 4.382793519690e+04, gap 0.0001%