Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:37 2012 Optimize a model with 187 rows, 113 columns and 578 nonzeros Presolve time: 0.00s Presolved: 187 rows, 113 columns, 578 nonzeros Variable types: 0 continuous, 113 integer (113 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 36 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 20 47.00000 0.00000 100% - 0s 0 0 0.91410 0 28 47.00000 0.91410 98.1% - 0s H 0 0 46.0000000 0.91410 98.0% - 0s H 0 0 44.0000000 0.91410 97.9% - 0s 0 0 0.93750 0 22 44.00000 0.93750 97.9% - 0s 0 0 1.06250 0 22 44.00000 1.06250 97.6% - 0s 0 0 1.06250 0 22 44.00000 1.06250 97.6% - 0s 0 0 1.10069 0 32 44.00000 1.10069 97.5% - 0s H 0 0 43.0000000 1.10069 97.4% - 0s 0 0 1.12500 0 22 43.00000 1.12500 97.4% - 0s 0 0 1.12500 0 22 43.00000 1.12500 97.4% - 0s 0 0 1.12500 0 22 43.00000 1.12500 97.4% - 0s H 0 0 40.0000000 1.12500 97.2% - 0s 0 2 1.15335 0 22 40.00000 1.15335 97.1% - 0s * 166 73 11 38.0000000 15.43750 59.4% 17.8 0s * 171 69 10 37.0000000 15.43750 58.3% 17.7 0s * 172 68 10 36.0000000 15.43750 57.1% 17.6 0s * 176 59 9 32.0000000 15.43750 51.8% 17.4 0s Cutting planes: Gomory: 1 Mod-K: 9 Explored 559 nodes (8826 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%