Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:17 2012 Optimize a model with 247 rows, 190 columns and 805 nonzeros Presolve time: 0.00s Presolved: 247 rows, 190 columns, 805 nonzeros Variable types: 0 continuous, 190 integer (190 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 95 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 67 51.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s 0 0 0.45563 0 69 42.00000 0.45563 98.9% - 0s 0 0 1.15187 0 73 42.00000 1.15187 97.3% - 0s H 0 0 35.0000000 1.15187 96.7% - 0s H 0 0 33.0000000 1.15187 96.5% - 0s 0 0 1.20301 0 72 33.00000 1.20301 96.4% - 0s 0 0 1.21315 0 77 33.00000 1.21315 96.3% - 0s 0 2 1.23923 0 77 33.00000 1.23923 96.2% - 0s * 35 28 21 23.0000000 4.13313 82.0% 24.0 0s * 85 57 20 22.0000000 7.15164 67.5% 22.3 0s * 163 90 16 21.0000000 8.91186 57.6% 19.3 0s Cutting planes: Gomory: 3 Zero half: 6 Mod-K: 1 Explored 964 nodes (15296 simplex iterations) in 0.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%