Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:47 2012 Optimize a model with 2553 rows, 101 columns and 5106 nonzeros Presolve removed 1784 rows and 0 columns Presolve time: 0.09s Presolved: 769 rows, 101 columns, 5343 nonzeros Variable types: 0 continuous, 101 integer (101 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.420054e+01, 447 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.20054 0 95 8.00000 14.20054 77.5% - 0s 0 0 13.97888 0 96 8.00000 13.97888 74.7% - 0s H 0 0 9.0000000 13.97888 55.3% - 0s 0 0 13.82480 0 98 9.00000 13.82480 53.6% - 0s 0 0 13.79786 0 99 9.00000 13.79786 53.3% - 0s 0 0 13.78131 0 100 9.00000 13.78131 53.1% - 0s 0 0 13.77468 0 100 9.00000 13.77468 53.1% - 0s 0 0 13.77454 0 100 9.00000 13.77454 53.1% - 0s 0 2 13.77290 0 100 9.00000 13.77290 53.0% - 0s Cutting planes: Clique: 62 Zero half: 4 Explored 169 nodes (10880 simplex iterations) in 1.55 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%