Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:32:26 2013

Optimize a model with 35518 rows, 34928 columns and 139358 nonzeros
Presolve removed 59 rows and 0 columns
Presolve time: 0.15s
Presolved: 35459 rows, 34928 columns, 139299 nonzeros
Variable types: 34869 continuous, 59 integer (59 binary)

Root relaxation: objective 5.012990e+04, 4834 iterations, 2.29 seconds

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

     0     0 50129.9007    0   48          - 50129.9007     -      -    2s
H    0     0                    65551.000000 50129.9007  23.5%     -    3s
     0     0 56870.7774    0   12 65551.0000 56870.7774  13.2%     -    6s
     0     0 57497.1732    0    3 65551.0000 57497.1732  12.3%     -    7s
H    0     0                    62001.044004 57497.1732  7.26%     -    7s
H    0     0                    61346.000000 57497.1732  6.27%     -    7s
     0     0 57590.8285    0    3 61346.0000 57590.8285  6.12%     -    7s
H    0     0                    60432.107446 57590.8285  4.70%     -    7s
H    0     0                    59510.000000 57590.8285  3.22%     -    7s
     0     2 57595.9703    0    3 59510.0000 57595.9703  3.22%     -    8s
H    2     2                    59050.386515 57647.1592  2.38%   112    8s
H    6     4                    57768.617284 57691.6286  0.13%   120    8s
*    9     4               8    57736.000000 57707.1903  0.05%  97.8    8s

Cutting planes:
  Implied bound: 55

Explored 14 nodes (9387 simplex iterations) in 8.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.773600000000e+04, best bound 5.773600000000e+04, gap 0.0%