Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:41:38 2012 Optimize a model with 14717 rows, 4422 columns and 48244 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.44s Presolved: 14781 rows, 4420 columns, 52154 nonzeros Variable types: 0 continuous, 4420 integer (4420 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 2.000000e+00, 3117 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 132 66.00000 2.00000 97.0% - 0s H 0 0 61.0000000 2.00000 96.7% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 3.00000 0 2649 5.00000 3.00000 40.0% - 9s H 0 0 4.0000000 3.00000 25.0% - 10s 0 0 3.00000 0 2644 4.00000 3.00000 25.0% - 11s 0 0 3.00000 0 2081 4.00000 3.00000 25.0% - 12s 0 0 3.00000 0 2849 4.00000 3.00000 25.0% - 14s 0 0 3.00000 0 98 4.00000 3.00000 25.0% - 29s Cutting planes: Gomory: 1 Clique: 10 Explored 0 nodes (86609 simplex iterations) in 31.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%