Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:54:59 2012 Optimize a model with 39787 rows, 38612 columns and 156994 nonzeros Presolve removed 418 rows and 4706 columns Presolve time: 0.97s Presolved: 39369 rows, 33906 columns, 150908 nonzeros Variable types: 0 continuous, 33906 integer (33906 binary) Found heuristic solution: objective 196.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 308 iterations, 0.02 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 (308 simplex iterations) in 1.09 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%