Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:50:31 2012 Optimize a model with 16205 rows, 21462 columns and 69348 nonzeros Presolve removed 28 rows and 3798 columns Presolve time: 0.32s Presolved: 16177 rows, 17664 columns, 65330 nonzeros Variable types: 0 continuous, 17664 integer (17664 binary) Found heuristic solution: objective 146.0000000 Root relaxation: objective 2.000000e+00, 12378 iterations, 0.58 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 170 146.00000 2.00000 98.6% - 1s H 0 0 80.0000000 2.00000 97.5% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 2s Explored 0 nodes (40646 simplex iterations) in 2.05 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%