Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:32:18 2012 Optimize a model with 48255 rows, 43472 columns and 187198 nonzeros Presolve removed 434 rows and 3330 columns Presolve time: 1.22s Presolved: 47821 rows, 40142 columns, 182370 nonzeros Variable types: 0 continuous, 40142 integer (40142 binary) Found heuristic solution: objective 208.0000000 Root relaxation: objective 3.000000e+00, 32073 iterations, 4.36 seconds Total elapsed time = 20.25s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 21s Explored 0 nodes (84777 simplex iterations) in 21.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%