Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:41 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 4.990367e+04, 4025 iterations, 1.68 seconds

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

     0     0 49903.6674    0   46          - 49903.6674     -      -    1s
H    0     0                    69802.000000 49903.6674  28.5%     -    3s
     0     0 59907.2663    0   13 69802.0000 59907.2663  14.2%     -    5s
H    0     0                    65193.000000 59907.2663  8.11%     -    5s
     0     0 60880.7692    0    2 65193.0000 60880.7692  6.61%     -    6s
H    0     0                    61759.727959 60880.7692  1.42%     -    6s
H    0     0                    61460.000000 60880.7692  0.94%     -    6s
     0     0 61078.1272    0    1 61460.0000 61078.1272  0.62%     -    6s
     0     2 61098.2804    0    1 61460.0000 61098.2804  0.59%     -    6s
*    3     0               2    61440.000000 61440.0000   0.0%   309    7s

Cutting planes:
  Implied bound: 54

Explored 4 nodes (8818 simplex iterations) in 7.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.144000000000e+04, best bound 6.144000000000e+04, gap 0.0%