Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:00:07 2012 Optimize a model with 66870 rows, 54522 columns and 253968 nonzeros Presolve removed 1888 rows and 5592 columns (presolve time = 5s) ... Presolve removed 1890 rows and 5594 columns Presolve time: 5.18s Presolved: 64980 rows, 48928 columns, 243158 nonzeros Variable types: 0 continuous, 48928 integer (48928 binary) Found heuristic solution: objective 233.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 366 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% - 5s Explored 0 nodes (366 simplex iterations) in 5.38 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%