Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:38 2013 Optimize a model with 480 rows, 4240 columns and 8820 nonzeros Presolve removed 80 rows and 60 columns Presolve time: 0.02s Presolved: 400 rows, 4180 columns, 8600 nonzeros Variable types: 4100 continuous, 80 integer (80 binary) Root relaxation: objective 3.839329e+04, 438 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38393.2919 0 2 - 38393.2919 - - 0s H 0 0 42201.041612 38393.2919 9.02% - 0s 0 2 38452.2165 0 2 42201.0416 38452.2165 8.88% - 0s H 3 3 38679.634821 38512.5072 0.43% 7.7 0s H 8 2 38656.097152 38564.4900 0.24% 8.9 0s * 11 2 11 38645.010978 38564.4900 0.21% 10.3 0s H 12 1 38632.970298 38564.4900 0.18% 9.4 0s Explored 21 nodes (587 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.863297029776e+04, best bound 3.863297029776e+04, gap 0.0%