Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:26:17 2013

Optimize a model with 33174 rows, 32604 columns and 130074 nonzeros
Presolve removed 57 rows and 0 columns
Presolve time: 0.14s
Presolved: 33117 rows, 32604 columns, 130017 nonzeros
Variable types: 32547 continuous, 57 integer (57 binary)

Root relaxation: objective 5.063250e+04, 4139 iterations, 2.18 seconds

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

     0     0 50632.5033    0   50          - 50632.5033     -      -    2s
H    0     0                    72589.000000 50632.5033  30.2%     -    4s
     0     0 64422.0891    0    5 72589.0000 64422.0891  11.3%     -    6s
H    0     0                    68457.706642 64422.0891  5.90%     -    6s
H    0     0                    67187.000000 64422.0891  4.12%     -    6s
H    0     0                    64885.000000 64422.0891  0.71%     -    6s
     0     0 64536.2794    0    2 64885.0000 64536.2794  0.54%     -    6s
H    0     0                    64634.000000 64536.2794  0.15%     -    6s
     0     2 64536.6570    0    2 64634.0000 64536.6570  0.15%     -    7s
*    1     1               1    64585.000000 64585.0000   0.0%   138    7s

Cutting planes:
  Implied bound: 51

Explored 2 nodes (7288 simplex iterations) in 7.30 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.458500000000e+04, best bound 6.458500000000e+04, gap 0.0%