Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:35 2012 Optimize a model with 239 rows, 141 columns and 736 nonzeros Presolve time: 0.00s Presolved: 239 rows, 141 columns, 736 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Found heuristic solution: objective 59.0000000 Root relaxation: objective 0.000000e+00, 45 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 22 59.00000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.72727 0 24 55.00000 0.72727 98.7% - 0s 0 0 0.86364 0 24 55.00000 0.86364 98.4% - 0s 0 0 0.95455 0 24 55.00000 0.95455 98.3% - 0s 0 0 1.00000 0 24 55.00000 1.00000 98.2% - 0s 0 0 1.00000 0 24 55.00000 1.00000 98.2% - 0s 0 0 1.00000 0 24 55.00000 1.00000 98.2% - 0s 0 0 1.00000 0 24 55.00000 1.00000 98.2% - 0s H 0 0 54.0000000 1.00000 98.1% - 0s 0 2 1.00000 0 24 54.00000 1.00000 98.1% - 0s H 54 35 52.0000000 11.09091 78.7% 30.9 0s * 99 66 15 50.0000000 11.14876 77.7% 28.7 0s * 197 102 14 49.0000000 15.63636 68.1% 24.6 0s * 207 100 17 48.0000000 15.63636 67.4% 23.7 0s * 480 148 13 47.0000000 24.85714 47.1% 21.6 0s * 920 149 26 46.0000000 26.20000 43.0% 21.0 0s * 966 127 24 45.0000000 26.20000 41.8% 20.9 0s * 1922 34 24 44.0000000 37.00000 15.9% 18.5 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 1984 nodes (36552 simplex iterations) in 0.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%