Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:50:29 2012 Optimize a model with 2785 rows, 106 columns and 5570 nonzeros Presolve removed 1973 rows and 0 columns Presolve time: 0.09s Presolved: 812 rows, 106 columns, 5654 nonzeros Variable types: 0 continuous, 106 integer (106 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.480182e+01, 428 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.80182 0 96 6.00000 14.80182 147% - 0s H 0 0 8.0000000 14.80182 85.0% - 0s 0 0 14.26269 0 103 8.00000 14.26269 78.3% - 0s H 0 0 9.0000000 14.26269 58.5% - 0s 0 0 14.22464 0 103 9.00000 14.22464 58.1% - 0s 0 0 14.17726 0 103 9.00000 14.17726 57.5% - 0s 0 0 14.15470 0 104 9.00000 14.15470 57.3% - 0s 0 0 14.14398 0 105 9.00000 14.14398 57.2% - 0s 0 0 14.13043 0 105 9.00000 14.13043 57.0% - 1s 0 0 14.12970 0 103 9.00000 14.12970 57.0% - 1s 0 0 14.12894 0 103 9.00000 14.12894 57.0% - 1s 0 2 14.12429 0 103 9.00000 14.12429 56.9% - 1s Cutting planes: Clique: 92 Explored 239 nodes (15492 simplex iterations) in 2.59 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%