Gurobi 5.0.1 (linux64) logging started Sat Jan 26 21:29:51 2013

Optimize a model with 30 rows, 100 columns and 3000 nonzeros
Presolve time: 0.01s
Presolved: 30 rows, 100 columns, 3000 nonzeros
Variable types: 0 continuous, 100 integer (100 binary)
Found heuristic solution: objective 55865.000000

Root relaxation: objective 5.798777e+04, 45 iterations, 0.00 seconds

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

     0     0 57987.7711    0   19 55865.0000 57987.7711  3.80%     -    0s
H    0     0                    57055.000000 57987.7711  1.63%     -    0s
     0     0 57974.8905    0   20 57055.0000 57974.8905  1.61%     -    0s
H    0     0                    57269.000000 57974.8905  1.23%     -    0s
     0     0 57967.1209    0   19 57269.0000 57967.1209  1.22%     -    0s
     0     0 57959.2359    0   19 57269.0000 57959.2359  1.21%     -    0s
     0     0 57955.2083    0   18 57269.0000 57955.2083  1.20%     -    0s
     0     0 57954.7264    0   19 57269.0000 57954.7264  1.20%     -    0s
H    0     0                    57323.000000 57954.7264  1.10%     -    0s
     0     2 57954.0467    0   19 57323.0000 57954.0467  1.10%     -    0s
H 3662  2205                    57343.000000 57838.3601  0.86%   5.7    0s
H 5900  2837                    57494.000000 57810.7922  0.55%   5.8    1s
 38510 13732 57680.6578   29   16 57494.0000 57687.8229  0.34%   6.1    5s
 75313 19237 57594.5144   31   14 57494.0000 57644.7330  0.26%   6.0   10s
 122222 19303 57522.6621   29   13 57494.0000 57605.9144  0.19%   5.9   15s
 170442 10707 57495.3576   32   13 57494.0000 57564.8722  0.12%   5.8   20s

Cutting planes:
  Gomory: 7

Explored 190549 nodes (1070299 simplex iterations) in 21.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.749400000000e+04, best bound 5.749900000000e+04, gap 0.0087%