Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:11:07 2012 Optimize a model with 12953 rows, 16256 columns and 54481 nonzeros Presolve removed 286 rows and 3812 columns Presolve time: 0.26s Presolved: 12667 rows, 12444 columns, 49836 nonzeros Variable types: 0 continuous, 12444 integer (12444 binary) Found heuristic solution: objective 127.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 166 iterations, 0.01 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 (166 simplex iterations) in 0.29 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%