Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:44:45 2012 Optimize a model with 14539 rows, 4556 columns and 47905 nonzeros Presolve time: 0.12s Presolved: 14539 rows, 4556 columns, 48077 nonzeros Variable types: 0 continuous, 4556 integer (4556 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 2.000000e+00, 9273 iterations, 1.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 134 39.00000 2.00000 94.9% - 3s H 0 0 12.0000000 2.00000 83.3% - 3s H 0 0 5.0000000 2.00000 60.0% - 3s 0 0 2.00000 0 134 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 134 5.00000 2.00000 60.0% - 9s 0 0 2.00000 0 134 5.00000 2.00000 60.0% - 15s 0 0 2.00000 0 134 5.00000 2.00000 60.0% - 22s 0 0 2.00000 0 134 5.00000 2.00000 60.0% - 31s 0 0 2.00000 0 134 5.00000 2.00000 60.0% - 37s 0 2 2.00000 0 134 5.00000 2.00000 60.0% - 56s 1 3 3.00000 1 947 5.00000 2.00000 60.0% 63747 77s 2 4 3.00000 1 725 5.00000 3.00000 40.0% 42284 86s H 27 7 4.0000000 3.00000 25.0% 3511 91s 35 3 cutoff 5 4.00000 3.00000 25.0% 3158 95s 43 3 cutoff 5 4.00000 3.00000 25.0% 2917 101s 47 3 cutoff 7 4.00000 3.00000 25.0% 3104 107s 49 3 cutoff 7 4.00000 3.00000 25.0% 3157 110s 53 3 3.00000 3 415 4.00000 3.00000 25.0% 3155 115s 59 1 cutoff 6 4.00000 3.00000 25.0% 3225 122s 64 2 3.00000 5 128 4.00000 3.00000 25.0% 3052 125s Cutting planes: Clique: 180 Explored 69 nodes (276022 simplex iterations) in 126.81 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%