Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:56:05 2012 Optimize a model with 16215 rows, 4830 columns and 53199 nonzeros Presolve time: 0.13s Presolved: 16215 rows, 4830 columns, 53382 nonzeros Variable types: 0 continuous, 4830 integer (4830 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 2.000000e+00, 5057 iterations, 0.29 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 138 40.00000 2.00000 95.0% - 2s H 0 0 16.0000000 2.00000 87.5% - 2s H 0 0 5.0000000 2.00000 60.0% - 2s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 5s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 13s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 20s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 27s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 41s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 48s 0 2 2.00000 0 138 5.00000 2.00000 60.0% - 63s 1 3 3.00000 1 869 5.00000 2.00000 60.0% 48475 75s 2 4 3.00000 1 831 5.00000 3.00000 40.0% 35778 85s 11 9 4.00000 6 120 5.00000 3.00000 40.0% 7967 90s * 33 4 27 4.0000000 3.00000 25.0% 2784 90s Cutting planes: Clique: 135 Explored 40 nodes (210375 simplex iterations) in 93.27 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%