Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:01 2012 Optimize a model with 2428 rows, 99 columns and 4856 nonzeros Presolve removed 1738 rows and 0 columns Presolve time: 0.07s Presolved: 690 rows, 99 columns, 4678 nonzeros Variable types: 0 continuous, 99 integer (99 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.393820e+01, 404 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.93820 0 93 8.00000 13.93820 74.2% - 0s 0 0 13.69575 0 98 8.00000 13.69575 71.2% - 0s 0 0 13.62940 0 98 8.00000 13.62940 70.4% - 0s 0 0 13.58111 0 99 8.00000 13.58111 69.8% - 0s 0 0 13.57164 0 99 8.00000 13.57164 69.6% - 0s H 0 0 9.0000000 13.57164 50.8% - 0s 0 0 13.56257 0 99 9.00000 13.56257 50.7% - 0s 0 0 13.55785 0 98 9.00000 13.55785 50.6% - 0s 0 0 13.55457 0 97 9.00000 13.55457 50.6% - 0s 0 0 13.55448 0 97 9.00000 13.55448 50.6% - 0s 0 0 13.54582 0 96 9.00000 13.54582 50.5% - 0s 0 0 13.52105 0 97 9.00000 13.52105 50.2% - 0s 0 0 13.49177 0 98 9.00000 13.49177 49.9% - 1s 0 0 13.47943 0 98 9.00000 13.47943 49.8% - 1s 0 0 13.46769 0 98 9.00000 13.46769 49.6% - 1s 0 0 13.45842 0 98 9.00000 13.45842 49.5% - 1s 0 0 13.45316 0 98 9.00000 13.45316 49.5% - 1s 0 0 13.45267 0 98 9.00000 13.45267 49.5% - 1s 0 2 13.45138 0 98 9.00000 13.45138 49.5% - 2s Cutting planes: Clique: 69 Explored 153 nodes (10192 simplex iterations) in 2.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%