Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:54:18 2012 Optimize a model with 11880 rows, 17556 columns and 52668 nonzeros Presolve removed 31 rows and 4092 columns Presolve time: 0.21s Presolved: 11849 rows, 13464 columns, 48576 nonzeros Variable types: 0 continuous, 13464 integer (13464 binary) Found heuristic solution: objective 35.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 13931 iterations, 1.37 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% - 1s Explored 0 nodes (13931 simplex iterations) in 1.60 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%