Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:13:15 2012 Optimize a model with 8142 rows, 14042 columns and 37996 nonzeros Presolve removed 267 rows and 3658 columns Presolve time: 0.14s Presolved: 7875 rows, 10384 columns, 33748 nonzeros Variable types: 0 continuous, 10384 integer (10384 binary) Found heuristic solution: objective 28.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 8876 iterations, 0.23 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 (8876 simplex iterations) in 0.39 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%