Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:09:51 2012 Optimize a model with 24286 rows, 26732 columns and 98776 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.53s Presolved: 24447 rows, 26730 columns, 125047 nonzeros Variable types: 0 continuous, 26730 integer (26730 binary) Found heuristic solution: objective 163.0000000 Root relaxation: objective 2.000000e+00, 16564 iterations, 0.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 232 163.00000 2.00000 98.8% - 3s H 0 0 150.0000000 2.00000 98.7% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s 0 0 2.11111 0 945 4.00000 2.11111 47.2% - 9s H 0 0 3.0000000 2.11111 29.6% - 9s Cutting planes: Zero half: 4 Explored 0 nodes (65517 simplex iterations) in 9.64 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%