Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:49:42 2012 Optimize a model with 17109 rows, 21170 columns and 71773 nonzeros Presolve removed 27 rows and 3627 columns Presolve time: 0.33s Presolved: 17082 rows, 17543 columns, 67912 nonzeros Variable types: 0 continuous, 17543 integer (17543 binary) Found heuristic solution: objective 145.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 258 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 190 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (459 simplex iterations) in 0.42 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%