Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:46 2012 Optimize a model with 3399 rows, 7310 columns and 17083 nonzeros Presolve removed 207 rows and 2977 columns Presolve time: 0.12s Presolved: 3192 rows, 4333 columns, 13607 nonzeros Variable types: 0 continuous, 4333 integer (4333 binary) Found heuristic solution: objective 85.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 79 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 (79 simplex iterations) in 0.13 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%