Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:27:04 2012 Optimize a model with 29924 rows, 29412 columns and 118330 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.69s Presolved: 30093 rows, 29410 columns, 147221 nonzeros Variable types: 0 continuous, 29410 integer (29410 binary) Found heuristic solution: objective 171.0000000 Root relaxation: objective 2.000000e+00, 19957 iterations, 1.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 298 171.00000 2.00000 98.8% - 4s H 0 0 136.0000000 2.00000 98.5% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s Cutting planes: Zero half: 2 Explored 0 nodes (61594 simplex iterations) in 4.52 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%