Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:29 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 4.069009e+04, 2978 iterations, 0.70 seconds

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

     0     0 40690.0881    0   35          - 40690.0881     -      -    0s
H    0     0                    52405.000000 40690.0881  22.4%     -    1s
     0     0 47166.4962    0    8 52405.0000 47166.4962  10.0%     -    2s
H    0     0                    49990.616281 47166.4962  5.65%     -    2s
H    0     0                    48106.000000 47166.4962  1.95%     -    2s
     0     0 47478.0435    0    1 48106.0000 47478.0435  1.31%     -    2s
H    0     0                    47495.608696 47478.0435  0.04%     -    2s
H    0     0                    47483.000000 47478.0435  0.01%     -    2s
     0     0 47478.7407    0    1 47483.0000 47478.7407  0.01%     -    2s

Cutting planes:
  Implied bound: 35

Explored 0 nodes (5191 simplex iterations) in 2.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.748300000000e+04, best bound 4.747874074074e+04, gap 0.0090%