Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:51:18 2012 Optimize a model with 17198 rows, 21756 columns and 72616 nonzeros Presolve removed 23 rows and 3089 columns Presolve time: 0.35s Presolved: 17175 rows, 18667 columns, 69295 nonzeros Variable types: 0 continuous, 18667 integer (18667 binary) Found heuristic solution: objective 147.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 252 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 124 3.00000 2.00000 33.3% - 0s Explored 0 nodes (390 simplex iterations) in 0.44 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%