Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:48 2013

Optimize a model with 19006 rows, 18576 columns and 74046 nonzeros
Presolve removed 43 rows and 0 columns
Presolve time: 0.08s
Presolved: 18963 rows, 18576 columns, 74003 nonzeros
Variable types: 18533 continuous, 43 integer (43 binary)

Root relaxation: objective 4.207612e+04, 2943 iterations, 0.59 seconds

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

     0     0 42076.1193    0   34          - 42076.1193     -      -    0s
H    0     0                    48557.000000 42076.1193  13.3%     -    1s
     0     0 46854.6310    0    5 48557.0000 46854.6310  3.51%     -    1s
H    0     0                    48443.000000 46854.6310  3.28%     -    1s
     0     0 46926.3847    0    3 48443.0000 46926.3847  3.13%     -    1s
H    0     0                    47663.000000 46926.3847  1.55%     -    1s
H    0     0                    46968.000000 46926.3847  0.09%     -    1s
     0     2 46966.4800    0    1 46968.0000 46966.4800  0.00%     -    2s

Cutting planes:
  Implied bound: 36

Explored 1 nodes (4056 simplex iterations) in 2.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.696800000000e+04, best bound 4.696648000000e+04, gap 0.0032%