Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:48:28 2012 Optimize a model with 16158 rows, 20592 columns and 68352 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.29s Presolved: 16299 rows, 20590 columns, 88575 nonzeros Variable types: 0 continuous, 20590 integer (20590 binary) Found heuristic solution: objective 143.0000000 Root relaxation: objective 2.000000e+00, 10632 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 0 158 143.00000 2.00000 98.6% - 1s H 0 0 124.0000000 2.00000 98.4% - 1s H 0 0 4.0000000 2.00000 50.0% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Cutting planes: Gomory: 1 Zero half: 3 Explored 0 nodes (36398 simplex iterations) in 1.78 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%