Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:52:40 2012 Optimize a model with 3046 rows, 111 columns and 6092 nonzeros Presolve removed 2203 rows and 0 columns Presolve time: 0.09s Presolved: 843 rows, 111 columns, 5690 nonzeros Variable types: 0 continuous, 111 integer (111 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.510429e+01, 402 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.10429 0 108 7.00000 15.10429 116% - 0s H 0 0 8.0000000 15.10429 88.8% - 0s 0 0 14.76978 0 110 8.00000 14.76978 84.6% - 0s 0 0 14.67685 0 111 8.00000 14.67685 83.5% - 0s H 0 0 9.0000000 14.67685 63.1% - 0s 0 0 14.65652 0 111 9.00000 14.65652 62.9% - 0s 0 0 14.62787 0 111 9.00000 14.62787 62.5% - 0s 0 0 14.62569 0 111 9.00000 14.62569 62.5% - 0s 0 0 14.62487 0 111 9.00000 14.62487 62.5% - 1s 0 0 14.62395 0 111 9.00000 14.62395 62.5% - 1s 0 0 14.62379 0 111 9.00000 14.62379 62.5% - 1s 0 2 14.62093 0 111 9.00000 14.62093 62.5% - 1s Cutting planes: Clique: 75 Explored 336 nodes (20043 simplex iterations) in 2.72 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%