Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:21:03 2012 Optimize a model with 53409 rows, 47742 columns and 206880 nonzeros Presolve removed 656 rows and 2 columns Presolve time: 1.30s Presolved: 52971 rows, 47740 columns, 252394 nonzeros Variable types: 0 continuous, 47740 integer (47740 binary) Found heuristic solution: objective 218.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 370 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (370 simplex iterations) in 1.48 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%