Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:32:06 2012 Optimize a model with 45827 rows, 40602 columns and 177079 nonzeros Presolve removed 25 rows and 4625 columns Presolve time: 0.97s Presolved: 45802 rows, 35977 columns, 172000 nonzeros Variable types: 0 continuous, 35977 integer (35977 binary) Found heuristic solution: objective 201.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 404 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 0 356 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (780 simplex iterations) in 1.22 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%