Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:44:41 2012 Optimize a model with 13523 rows, 19182 columns and 59062 nonzeros Presolve removed 34 rows and 4418 columns Presolve time: 0.25s Presolved: 13489 rows, 14764 columns, 54450 nonzeros Variable types: 0 continuous, 14764 integer (14764 binary) Found heuristic solution: objective 138.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 210 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 110 3.00000 2.00000 33.3% - 0s Explored 0 nodes (366 simplex iterations) in 0.32 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%