Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:32 2013

Optimize a model with 22654 rows, 22184 columns and 88454 nonzeros
Presolve removed 47 rows and 0 columns
Presolve time: 0.10s
Presolved: 22607 rows, 22184 columns, 88407 nonzeros
Variable types: 22137 continuous, 47 integer (47 binary)

Root relaxation: objective 4.521667e+04, 4047 iterations, 1.73 seconds

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

     0     0 45216.6679    0   45          - 45216.6679     -      -    1s
H    0     0                    67111.000000 45216.6679  32.6%     -    3s
     0     0 59511.6396    0    4 67111.0000 59511.6396  11.3%     -    4s
H    0     0                    61612.759811 59511.6396  3.41%     -    4s
H    0     0                    60359.000000 59511.6396  1.40%     -    4s
H    0     0                    60012.000000 59511.6396  0.83%     -    4s
     0     0 59666.1428    0    3 60012.0000 59666.1428  0.58%     -    4s
H    0     0                    59739.000000 59666.1428  0.12%     -    4s
     0     2 59678.1685    0    3 59739.0000 59678.1685  0.10%     -    5s

Cutting planes:
  Implied bound: 45

Explored 3 nodes (6511 simplex iterations) in 5.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.973900000000e+04, best bound 5.973829126214e+04, gap 0.0012%