Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:36:35 2012 Optimize a model with 92 rows, 552 columns and 736 nonzeros Presolve removed 18 rows and 414 columns Presolve time: 0.00s Presolved: 74 rows, 138 columns, 322 nonzeros Variable types: 0 continuous, 138 integer (138 binary) Found heuristic solution: objective 4.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 75 iterations, 0.00 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 (75 simplex iterations) in 0.00 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%