Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:59:12 2012 Optimize a model with 10089 rows, 3306 columns and 33345 nonzeros Presolve time: 0.09s Presolved: 10089 rows, 3306 columns, 33656 nonzeros Variable types: 0 continuous, 3306 integer (3306 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 2.000000e+00, 3302 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 114 38.00000 2.00000 94.7% - 0s H 0 0 13.0000000 2.00000 84.6% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.00000 0 114 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 114 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 114 5.00000 2.00000 60.0% - 10s 0 0 2.00000 0 114 5.00000 2.00000 60.0% - 14s 0 0 2.00000 0 114 5.00000 2.00000 60.0% - 18s 0 0 2.00000 0 114 5.00000 2.00000 60.0% - 21s 0 2 2.00000 0 114 5.00000 2.00000 60.0% - 30s 1 3 3.00000 1 466 5.00000 2.00000 60.0% 24987 36s 2 4 3.00000 1 522 5.00000 3.00000 40.0% 18444 40s * 22 9 16 4.0000000 3.00000 25.0% 2183 42s 31 8 3.00000 4 102 4.00000 3.00000 25.0% 1828 45s 42 9 cutoff 6 4.00000 3.00000 25.0% 1879 50s 70 5 3.00000 6 98 4.00000 3.00000 25.0% 1528 55s 76 1 cutoff 5 4.00000 3.00000 25.0% 1706 60s Cutting planes: Gomory: 1 Clique: 144 Zero half: 1 Explored 86 nodes (207280 simplex iterations) in 64.43 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%