Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:23:44 2012 Optimize a model with 8040 rows, 4556 columns and 28408 nonzeros Presolve removed 605 rows and 134 columns Presolve time: 0.14s Presolved: 7435 rows, 4422 columns, 26800 nonzeros Variable types: 0 continuous, 4422 integer (4422 binary) Found heuristic solution: objective 40.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 7023 iterations, 0.64 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 (7023 simplex iterations) in 0.80 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%