Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:23:43 2013

Optimize a model with 32032 rows, 31472 columns and 125552 nonzeros
Presolve removed 56 rows and 0 columns
Presolve time: 0.14s
Presolved: 31976 rows, 31472 columns, 125496 nonzeros
Variable types: 31416 continuous, 56 integer (56 binary)

Root relaxation: objective 4.767074e+04, 4123 iterations, 1.78 seconds

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

     0     0 47670.7390    0   49          - 47670.7390     -      -    2s
H    0     0                    68308.000000 47670.7390  30.2%     -    2s
     0     0 57739.0707    0    8 68308.0000 57739.0707  15.5%     -    5s
H    0     0                    67976.456656 57739.0707  15.1%     -    5s
H    0     0                    62396.000000 57739.0707  7.46%     -    5s
     0     0 58351.1940    0    4 62396.0000 58351.1940  6.48%     -    5s
H    0     0                    61534.831407 58351.1940  5.17%     -    5s
H    0     0                    61071.000000 58351.1940  4.45%     -    5s
H    0     0                    58764.000000 58351.1940  0.70%     -    6s
     0     0 58364.0840    0    2 58764.0000 58364.0840  0.68%     -    6s
     0     2 58374.8601    0    2 58764.0000 58374.8601  0.66%     -    6s
*    9     4               7    58758.000000 58528.5548  0.39%   159    7s

Cutting planes:
  Implied bound: 52

Explored 14 nodes (9803 simplex iterations) in 7.80 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.875800000000e+04, best bound 5.875541726619e+04, gap 0.0044%