Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:26 2012 Optimize a model with 2365 rows, 97 columns and 4730 nonzeros Presolve removed 1693 rows and 0 columns Presolve time: 0.08s Presolved: 672 rows, 97 columns, 4576 nonzeros Variable types: 0 continuous, 97 integer (97 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.357932e+01, 380 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.57932 0 94 8.00000 13.57932 69.7% - 0s 0 0 13.34434 0 95 8.00000 13.34434 66.8% - 0s 0 0 13.29474 0 96 8.00000 13.29474 66.2% - 0s 0 0 13.27439 0 96 8.00000 13.27439 65.9% - 0s 0 0 13.24975 0 96 8.00000 13.24975 65.6% - 0s 0 0 13.22069 0 96 8.00000 13.22069 65.3% - 0s 0 0 13.19917 0 97 8.00000 13.19917 65.0% - 0s 0 0 13.19681 0 97 8.00000 13.19681 65.0% - 0s 0 0 13.18755 0 97 8.00000 13.18755 64.8% - 0s 0 0 13.18052 0 97 8.00000 13.18052 64.8% - 0s 0 0 13.18049 0 97 8.00000 13.18049 64.8% - 0s 0 0 13.18033 0 97 8.00000 13.18033 64.8% - 1s 0 2 13.17874 0 97 8.00000 13.17874 64.7% - 1s * 216 29 6 9.0000000 11.33401 25.9% 44.9 1s Cutting planes: Clique: 50 Zero half: 4 Explored 256 nodes (11787 simplex iterations) in 1.69 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%