Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:45:39 2012 Optimize a model with 9912 rows, 3192 columns and 32704 nonzeros Presolve time: 0.09s Presolved: 9912 rows, 3192 columns, 33098 nonzeros Variable types: 0 continuous, 3192 integer (3192 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 2.000000e+00, 5580 iterations, 0.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 112 32.00000 2.00000 93.8% - 1s H 0 0 13.0000000 2.00000 84.6% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 112 5.00000 2.00000 60.0% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s 0 0 2.00000 0 112 4.00000 2.00000 50.0% - 5s 0 0 2.00000 0 112 4.00000 2.00000 50.0% - 9s 0 0 2.00000 0 112 4.00000 2.00000 50.0% - 12s 0 0 2.00000 0 112 4.00000 2.00000 50.0% - 16s 0 0 2.00000 0 112 4.00000 2.00000 50.0% - 19s 0 2 2.00000 0 112 4.00000 2.00000 50.0% - 33s 1 3 3.00000 1 470 4.00000 2.00000 50.0% 35226 42s 2 4 3.00000 1 421 4.00000 3.00000 25.0% 23796 46s 18 4 cutoff 7 4.00000 3.00000 25.0% 3841 50s 31 7 3.00000 5 102 4.00000 3.00000 25.0% 2900 55s 38 4 cutoff 7 4.00000 3.00000 25.0% 2907 60s 52 4 3.00000 2 106 4.00000 3.00000 25.0% 2532 65s 58 2 cutoff 4 4.00000 3.00000 25.0% 2606 70s Cutting planes: Clique: 151 Explored 61 nodes (203424 simplex iterations) in 70.05 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%