Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:45:58 2012 Optimize a model with 43035 rows, 41412 columns and 169503 nonzeros Presolve removed 27 rows and 5077 columns Presolve time: 0.95s Presolved: 43008 rows, 36335 columns, 164004 nonzeros Variable types: 0 continuous, 36335 integer (36335 binary) Found heuristic solution: objective 203.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 418 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 344 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (764 simplex iterations) in 1.20 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%