Gurobi 5.0.1 (linux64) logging started Fri Nov 16 12:13:57 2012 Optimize a model with 19368 rows, 5256 columns and 63072 nonzeros Presolve time: 0.15s Presolved: 19368 rows, 5256 columns, 63205 nonzeros Variable types: 0 continuous, 5256 integer (5256 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 2.000000e+00, 5759 iterations, 0.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 144 47.00000 2.00000 95.7% - 1s H 0 0 17.0000000 2.00000 88.2% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 23s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 36s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 48s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 55s 0 2 2.00000 0 144 5.00000 2.00000 60.0% - 88s 1 3 3.00000 1 673 5.00000 2.00000 60.0% 54063 104s 2 4 3.00000 1 721 5.00000 3.00000 40.0% 45292 119s 5 3 3.00000 2 391 5.00000 3.00000 40.0% 19514 121s 10 4 4.00000 4 153 5.00000 3.00000 40.0% 10965 125s 14 6 4.00000 5 152 5.00000 3.00000 40.0% 9554 131s 46 17 3.20000 3 276 5.00000 3.00000 40.0% 3822 146s 47 18 3.22222 3 231 5.00000 3.20000 36.0% 4317 153s 55 24 4.00000 10 118 5.00000 3.20000 36.0% 3758 160s * 61 3 14 4.0000000 4.00000 0.0% 3398 160s Cutting planes: Clique: 153 Explored 62 nodes (332903 simplex iterations) in 160.36 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%