Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:01:38 2012 Optimize a model with 20723 rows, 24806 columns and 86191 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.42s Presolved: 20878 rows, 24804 columns, 110576 nonzeros Variable types: 0 continuous, 24804 integer (24804 binary) Found heuristic solution: objective 157.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 311 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 0 206 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (533 simplex iterations) in 0.55 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%