Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:21:31 2012 Optimize a model with 2898 rows, 1806 columns and 10332 nonzeros Presolve removed 336 rows and 0 columns Presolve time: 0.06s Presolved: 2562 rows, 1806 columns, 9492 nonzeros Variable types: 0 continuous, 1806 integer (1806 binary) Found heuristic solution: objective 23.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 2583 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (2583 simplex iterations) in 0.17 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%