Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:02:57 2012 Optimize a model with 14519 rows, 17556 columns and 60454 nonzeros Presolve removed 23 rows and 2774 columns Presolve time: 0.27s Presolved: 14496 rows, 14782 columns, 57462 nonzeros Variable types: 0 continuous, 14782 integer (14782 binary) Found heuristic solution: objective 132.0000000 Root relaxation: objective 2.000000e+00, 9904 iterations, 0.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 182 132.00000 2.00000 98.5% - 1s H 0 0 126.0000000 2.00000 98.4% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s Cutting planes: Zero half: 1 Explored 0 nodes (32963 simplex iterations) in 1.59 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%