Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:04:10 2012 Optimize a model with 4048 rows, 127 columns and 8096 nonzeros Presolve removed 2882 rows and 0 columns Presolve time: 0.14s Presolved: 1166 rows, 127 columns, 8215 nonzeros Variable types: 0 continuous, 127 integer (127 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.652415e+01, 578 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.52415 0 125 8.00000 16.52415 107% - 0s 0 0 16.24206 0 127 8.00000 16.24206 103% - 0s 0 0 16.18539 0 127 8.00000 16.18539 102% - 0s 0 0 16.16546 0 127 8.00000 16.16546 102% - 0s 0 0 16.15915 0 127 8.00000 16.15915 102% - 0s H 0 0 9.0000000 16.15915 79.5% - 0s 0 0 16.15466 0 127 9.00000 16.15466 79.5% - 1s 0 0 16.15412 0 127 9.00000 16.15412 79.5% - 1s 0 2 16.15337 0 127 9.00000 16.15337 79.5% - 1s H 219 78 10.0000000 14.92979 49.3% 70.7 2s Cutting planes: Clique: 68 Explored 419 nodes (30590 simplex iterations) in 3.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%