Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:02:01 2012 Optimize a model with 32390 rows, 33672 columns and 129928 nonzeros Presolve removed 26 rows and 4394 columns Presolve time: 0.69s Presolved: 32364 rows, 29278 columns, 125182 nonzeros Variable types: 0 continuous, 29278 integer (29278 binary) Found heuristic solution: objective 183.0000000 Root relaxation: objective 2.000000e+00, 21475 iterations, 1.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 298 183.00000 2.00000 98.9% - 4s H 0 0 124.0000000 2.00000 98.4% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s Cutting planes: Zero half: 2 Explored 0 nodes (70840 simplex iterations) in 4.84 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%