Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:46:47 2012 Optimize a model with 5841 rows, 9900 columns and 27027 nonzeros Presolve removed 27 rows and 2673 columns Presolve time: 0.14s Presolved: 5814 rows, 7227 columns, 24354 nonzeros Variable types: 0 continuous, 7227 integer (7227 binary) Found heuristic solution: objective 30.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4213 iterations, 0.05 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 (4213 simplex iterations) in 0.21 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%