Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:00:50 2012 Optimize a model with 19938 rows, 24806 columns and 83836 nonzeros Presolve removed 343 rows and 4241 columns Presolve time: 0.44s Presolved: 19595 rows, 20565 columns, 78562 nonzeros Variable types: 0 continuous, 20565 integer (20565 binary) Found heuristic solution: objective 157.0000000 Root relaxation: objective 3.000000e+00, 10303 iterations, 0.89 seconds 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% - 1s Explored 0 nodes (10303 simplex iterations) in 1.39 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%