Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:52 2013

Optimize a model with 680 rows, 4440 columns and 9620 nonzeros
Presolve removed 80 rows and 60 columns
Presolve time: 0.03s
Presolved: 600 rows, 4380 columns, 9300 nonzeros
Variable types: 4200 continuous, 180 integer (180 binary)

Root relaxation: objective 4.370285e+04, 605 iterations, 0.02 seconds

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

     0     0 43702.8549    0    2          - 43702.8549     -      -    0s
     0     0 43724.1129    0    1          - 43724.1129     -      -    0s
     0     0 43767.1905    0    3          - 43767.1905     -      -    0s
     0     0 43819.9024    0    5          - 43819.9024     -      -    0s
H    0     0                    44293.952759 43819.9024  1.07%     -    0s
     0     2 43822.7380    0    5 44293.9528 43822.7380  1.06%     -    0s
H   23    12                    44038.692081 43870.4550  0.38%  17.9    0s
H   45     9                    43965.462518 43881.8671  0.19%  16.8    0s
*   46     2               3    43900.453435 43891.3024  0.02%  16.9    0s

Cutting planes:
  Gomory: 5

Explored 49 nodes (1502 simplex iterations) in 0.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.390045343473e+04, best bound 4.390045343473e+04, gap 0.0%