Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:04:21 2012 Optimize a model with 317 rows, 215 columns and 1005 nonzeros Presolve time: 0.00s Presolved: 317 rows, 215 columns, 1005 nonzeros Variable types: 0 continuous, 215 integer (215 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 0.000000e+00, 100 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 57 76.00000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.66118 0 65 56.00000 0.66118 98.8% - 0s 0 0 0.98086 0 59 56.00000 0.98086 98.2% - 0s 0 0 1.19298 0 59 56.00000 1.19298 97.9% - 0s 0 0 1.20236 0 66 56.00000 1.20236 97.9% - 0s 0 2 1.22609 0 66 56.00000 1.22609 97.8% - 0s * 39 39 22 53.0000000 4.24747 92.0% 28.2 0s * 47 36 23 52.0000000 4.24747 91.8% 24.6 0s * 79 59 22 45.0000000 4.42781 90.2% 22.6 0s * 156 102 18 44.0000000 9.34091 78.8% 22.1 0s * 420 219 19 43.0000000 15.55455 63.8% 21.7 0s H 658 279 41.0000000 17.83871 56.5% 22.5 0s * 791 227 33 40.0000000 17.83871 55.4% 21.4 0s * 794 211 35 39.0000000 17.83871 54.3% 21.4 0s H 1431 148 38.0000000 26.11111 31.3% 19.9 1s Cutting planes: Gomory: 1 Mod-K: 3 Explored 2341 nodes (44537 simplex iterations) in 1.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%