Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:00:28 2012 Optimize a model with 16691 rows, 24492 columns and 73786 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.32s Presolved: 16845 rows, 24490 columns, 97908 nonzeros Variable types: 0 continuous, 24490 integer (24490 binary) Found heuristic solution: objective 156.0000000 Root relaxation: objective 2.000000e+00, 11775 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 0 166 156.00000 2.00000 98.7% - 1s H 0 0 85.0000000 2.00000 97.6% - 1s H 0 0 4.0000000 2.00000 50.0% - 2s H 0 0 3.0000000 2.00000 33.3% - 2s Cutting planes: Zero half: 1 Explored 0 nodes (40493 simplex iterations) in 2.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%