Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:52:13 2012 Optimize a model with 3053 rows, 110 columns and 6106 nonzeros Presolve removed 2191 rows and 0 columns Presolve time: 0.10s Presolved: 862 rows, 110 columns, 5988 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.475360e+01, 409 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.75360 0 108 8.00000 14.75360 84.4% - 0s 0 0 14.54396 0 110 8.00000 14.54396 81.8% - 0s 0 0 14.44975 0 109 8.00000 14.44975 80.6% - 0s H 0 0 9.0000000 14.44975 60.6% - 0s 0 0 14.36050 0 110 9.00000 14.36050 59.6% - 0s 0 0 14.34270 0 109 9.00000 14.34270 59.4% - 0s 0 0 14.31720 0 110 9.00000 14.31720 59.1% - 0s 0 0 14.30538 0 108 9.00000 14.30538 58.9% - 0s 0 0 14.30452 0 109 9.00000 14.30452 58.9% - 1s 0 0 14.30451 0 109 9.00000 14.30451 58.9% - 1s 0 0 14.30448 0 109 9.00000 14.30448 58.9% - 1s 0 2 14.30443 0 109 9.00000 14.30443 58.9% - 1s Cutting planes: Clique: 83 Explored 320 nodes (19705 simplex iterations) in 2.78 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%