Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:34:57 2012 Optimize a model with 51167 rows, 43472 columns and 195934 nonzeros Presolve removed 418 rows and 2 columns Presolve time: 1.29s Presolved: 50957 rows, 43470 columns, 237670 nonzeros Variable types: 0 continuous, 43470 integer (43470 binary) Found heuristic solution: objective 208.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 352 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 (352 simplex iterations) in 1.45 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%