Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:36 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 45.0000000 Root relaxation: objective 0.000000e+00, 41 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 45.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s 0 0 1.08333 0 22 44.00000 1.08333 97.5% - 0s 0 0 1.12130 0 31 44.00000 1.12130 97.5% - 0s 0 0 1.16667 0 22 44.00000 1.16667 97.3% - 0s 0 0 1.25000 0 22 44.00000 1.25000 97.2% - 0s 0 0 1.25000 0 22 44.00000 1.25000 97.2% - 0s 0 0 1.25000 0 22 44.00000 1.25000 97.2% - 0s 0 2 1.85088 0 22 44.00000 1.85088 95.8% - 0s * 21 16 11 43.0000000 6.33333 85.3% 21.7 0s H 27 16 42.0000000 6.50000 84.5% 22.3 0s * 70 38 13 41.0000000 13.00000 68.3% 19.1 0s * 160 72 13 40.0000000 17.68750 55.8% 17.3 0s * 170 68 13 39.0000000 17.68750 54.6% 16.5 0s * 203 64 12 38.0000000 18.00000 52.6% 15.8 0s * 273 75 12 37.0000000 21.45455 42.0% 14.8 0s Cutting planes: Gomory: 1 Mod-K: 5 Explored 1065 nodes (12891 simplex iterations) in 0.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%