Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:33 2012 Optimize a model with 2805 rows, 7310 columns and 15385 nonzeros Presolve removed 45 rows and 3825 columns Presolve time: 0.08s Presolved: 2760 rows, 3485 columns, 11560 nonzeros Variable types: 0 continuous, 3485 integer (3485 binary) Found heuristic solution: objective 19.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 2251 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (2251 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%