Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:52 2012 Optimize a model with 721 rows, 119 columns and 1442 nonzeros Presolve removed 265 rows and 0 columns Presolve time: 0.00s Presolved: 456 rows, 119 columns, 1151 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.136306e+01, 283 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.36306 0 115 29.00000 41.36306 42.6% - 0s 0 0 40.83305 0 118 29.00000 40.83305 40.8% - 0s 0 0 40.60542 0 116 29.00000 40.60542 40.0% - 0s 0 0 40.18651 0 119 29.00000 40.18651 38.6% - 0s 0 0 39.82976 0 117 29.00000 39.82976 37.3% - 0s 0 0 39.75688 0 119 29.00000 39.75688 37.1% - 0s 0 0 39.58902 0 117 29.00000 39.58902 36.5% - 0s 0 0 39.53388 0 118 29.00000 39.53388 36.3% - 0s 0 0 39.48125 0 117 29.00000 39.48125 36.1% - 0s 0 0 39.42059 0 118 29.00000 39.42059 35.9% - 0s 0 0 39.36960 0 118 29.00000 39.36960 35.8% - 0s 0 0 39.24626 0 118 29.00000 39.24626 35.3% - 0s 0 0 39.12734 0 116 29.00000 39.12734 34.9% - 0s 0 0 39.08275 0 118 29.00000 39.08275 34.8% - 0s 0 0 38.99339 0 118 29.00000 38.99339 34.5% - 0s H 0 0 30.0000000 38.99339 30.0% - 0s 0 0 38.95488 0 118 30.00000 38.95488 29.8% - 0s 0 0 38.93799 0 118 30.00000 38.93799 29.8% - 0s 0 0 38.93799 0 116 30.00000 38.93799 29.8% - 0s 0 2 38.93725 0 115 30.00000 38.93725 29.8% - 0s * 13 13 11 31.0000000 38.93725 25.6% 55.2 0s H 331 107 32.0000000 36.91211 15.4% 32.0 0s * 474 91 17 33.0000000 36.50000 10.6% 31.6 0s 718 117 35.81818 8 116 33.00000 35.81818 8.54% 30.2 5s Cutting planes: Gomory: 4 Zero half: 44 Explored 1544 nodes (48061 simplex iterations) in 8.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%