Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:58 2012 Optimize a model with 461 rows, 462 columns and 1741 nonzeros Presolve removed 45 rows and 23 columns Presolve time: 0.01s Presolved: 416 rows, 439 columns, 1575 nonzeros Variable types: 0 continuous, 439 integer (439 binary) Found heuristic solution: objective 21.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 33 iterations, 0.00 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% - 0s Explored 0 nodes (33 simplex iterations) in 0.01 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%