Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:13:00 2013

Optimize a model with 26622 rows, 26112 columns and 104142 nonzeros
Presolve removed 51 rows and 0 columns
Presolve time: 0.12s
Presolved: 26571 rows, 26112 columns, 104091 nonzeros
Variable types: 26061 continuous, 51 integer (51 binary)

Root relaxation: objective 4.372673e+04, 2777 iterations, 0.90 seconds

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

     0     0 43726.7283    0   38          - 43726.7283     -      -    1s
H    0     0                    56837.000000 43726.7283  23.1%     -    1s
     0     0 50458.5139    0   13 56837.0000 50458.5139  11.2%     -    3s
H    0     0                    53103.000000 50458.5139  4.98%     -    3s
     0     0 51461.5295    0    7 53103.0000 51461.5295  3.09%     -    3s
     0     0 51511.6919    0    4 53103.0000 51511.6919  3.00%     -    4s
H    0     0                    52517.000000 51511.6919  1.91%     -    4s
H    0     0                    51626.000000 51511.6919  0.22%     -    4s
     0     0 51517.2463    0    3 51626.0000 51517.2463  0.21%     -    4s
     0     2 51517.3249    0    3 51626.0000 51517.3249  0.21%     -    4s

Cutting planes:
  Implied bound: 46

Explored 8 nodes (5924 simplex iterations) in 4.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.162600000000e+04, best bound 5.162600000000e+04, gap 0.0%