Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:14:20 2012 Optimize a model with 52749 rows, 44732 columns and 201925 nonzeros Presolve removed 846 rows and 2 columns Presolve time: 1.34s Presolved: 52114 rows, 44730 columns, 243844 nonzeros Variable types: 0 continuous, 44730 integer (44730 binary) Found heuristic solution: objective 211.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 347 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 (347 simplex iterations) in 1.50 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%