Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:13:25 2012 Optimize a model with 45731 rows, 42642 columns and 178806 nonzeros Presolve removed 26 rows and 4946 columns Presolve time: 1.07s Presolved: 45705 rows, 37696 columns, 173418 nonzeros Variable types: 0 continuous, 37696 integer (37696 binary) Found heuristic solution: objective 206.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 413 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 0 348 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (753 simplex iterations) in 1.32 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%