Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:23 2012 Optimize a model with 3485 rows, 6972 columns and 17013 nonzeros Presolve removed 251 rows and 2 columns Presolve time: 0.12s Presolved: 3317 rows, 6970 columns, 23243 nonzeros Variable types: 0 continuous, 6970 integer (6970 binary) Found heuristic solution: objective 83.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 112 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 (112 simplex iterations) in 0.14 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%