Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:58:51 2012 Optimize a model with 3632 rows, 121 columns and 7264 nonzeros Presolve removed 2594 rows and 0 columns Presolve time: 0.12s Presolved: 1038 rows, 121 columns, 7251 nonzeros Variable types: 0 continuous, 121 integer (121 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.610087e+01, 509 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.10087 0 119 7.00000 16.10087 130% - 0s H 0 0 8.0000000 16.10087 101% - 0s 0 0 15.81824 0 121 8.00000 15.81824 97.7% - 0s H 0 0 9.0000000 15.81824 75.8% - 0s 0 0 15.74802 0 121 9.00000 15.74802 75.0% - 0s 0 0 15.68753 0 121 9.00000 15.68753 74.3% - 0s 0 0 15.65730 0 121 9.00000 15.65730 74.0% - 0s 0 0 15.63896 0 121 9.00000 15.63896 73.8% - 0s 0 0 15.63459 0 121 9.00000 15.63459 73.7% - 0s 0 0 15.63205 0 121 9.00000 15.63205 73.7% - 1s 0 0 15.63046 0 121 9.00000 15.63046 73.7% - 1s 0 0 15.63043 0 121 9.00000 15.63043 73.7% - 1s 0 0 15.63040 0 121 9.00000 15.63040 73.7% - 1s 0 2 15.62809 0 121 9.00000 15.62809 73.6% - 2s H 498 54 10.0000000 11.70139 17.0% 64.3 4s Cutting planes: Clique: 68 Zero half: 2 Explored 553 nodes (33839 simplex iterations) in 4.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%