Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:31:53 2012 Optimize a model with 14849 rows, 18360 columns and 62233 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.25s Presolved: 14982 rows, 18358 columns, 80238 nonzeros Variable types: 0 continuous, 18358 integer (18358 binary) Found heuristic solution: objective 135.0000000 Root relaxation: objective 2.000000e+00, 10533 iterations, 0.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 166 135.00000 2.00000 98.5% - 1s H 0 0 58.0000000 2.00000 96.6% - 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: 12 Explored 0 nodes (33696 simplex iterations) in 1.53 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%