Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:56:56 2012 Optimize a model with 58911 rows, 50400 columns and 226014 nonzeros Presolve removed 921 rows and 5154 columns Presolve time: 1.61s Presolved: 57990 rows, 45246 columns, 218104 nonzeros Variable types: 0 continuous, 45246 integer (45246 binary) Found heuristic solution: objective 224.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 386 iterations, 0.04 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 (386 simplex iterations) in 1.79 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%