Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:11:03 2012 Optimize a model with 9270 rows, 16256 columns and 43432 nonzeros Presolve removed 299 rows and 5463 columns Presolve time: 0.17s Presolved: 8971 rows, 10793 columns, 37194 nonzeros Variable types: 0 continuous, 10793 integer (10793 binary) Found heuristic solution: objective 127.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 133 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 (133 simplex iterations) in 0.20 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%