Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:51:40 2012 Optimize a model with 377 rows, 271 columns and 1211 nonzeros Presolve time: 0.00s Presolved: 377 rows, 271 columns, 1211 nonzeros Variable types: 0 continuous, 271 integer (271 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 116 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 83 74.00000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.53197 0 84 64.00000 0.53197 99.2% - 0s H 0 0 54.0000000 0.53197 99.0% - 0s 0 0 1.18830 0 87 54.00000 1.18830 97.8% - 0s H 0 0 53.0000000 1.18830 97.8% - 0s H 0 0 51.0000000 1.18830 97.7% - 0s 0 0 1.19973 0 87 51.00000 1.19973 97.6% - 0s H 0 0 50.0000000 1.19973 97.6% - 0s 0 2 1.20548 0 87 50.00000 1.20548 97.6% - 0s * 44 44 28 47.0000000 4.63635 90.1% 28.6 0s * 92 66 30 41.0000000 4.85606 88.2% 26.9 0s * 518 308 22 38.0000000 12.43118 67.3% 30.7 0s * 777 378 32 37.0000000 13.47070 63.6% 30.1 1s 5260 964 27.86667 22 124 37.00000 25.14286 32.0% 23.4 5s * 6292 1013 34 36.0000000 26.00000 27.8% 22.8 5s 12298 871 33.00000 25 128 36.00000 28.96875 19.5% 21.1 10s Explored 17105 nodes (348486 simplex iterations) in 12.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%