Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:04:28 2012 Optimize a model with 796 rows, 128 columns and 1592 nonzeros Presolve removed 305 rows and 0 columns Presolve time: 0.01s Presolved: 491 rows, 128 columns, 1263 nonzeros Variable types: 0 continuous, 128 integer (128 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.249309e+01, 372 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42.49309 0 125 28.00000 42.49309 51.8% - 0s H 0 0 29.0000000 42.49309 46.5% - 0s 0 0 42.22778 0 122 29.00000 42.22778 45.6% - 0s H 0 0 30.0000000 42.22778 40.8% - 0s 0 0 42.11324 0 125 30.00000 42.11324 40.4% - 0s H 0 0 31.0000000 42.11324 35.8% - 0s H 0 0 33.0000000 42.11324 27.6% - 0s 0 0 41.96419 0 126 33.00000 41.96419 27.2% - 0s 0 0 41.85883 0 127 33.00000 41.85883 26.8% - 0s 0 0 41.60149 0 125 33.00000 41.60149 26.1% - 0s 0 0 41.35633 0 125 33.00000 41.35633 25.3% - 0s 0 0 41.19257 0 121 33.00000 41.19257 24.8% - 0s 0 0 41.14962 0 124 33.00000 41.14962 24.7% - 0s 0 0 41.13130 0 126 33.00000 41.13130 24.6% - 0s 0 0 41.09079 0 126 33.00000 41.09079 24.5% - 0s 0 0 41.03143 0 125 33.00000 41.03143 24.3% - 0s 0 0 40.98229 0 126 33.00000 40.98229 24.2% - 0s 0 0 40.95294 0 125 33.00000 40.95294 24.1% - 0s 0 0 40.93226 0 126 33.00000 40.93226 24.0% - 0s 0 0 40.91250 0 127 33.00000 40.91250 24.0% - 0s 0 0 40.90852 0 127 33.00000 40.90852 24.0% - 0s 0 0 40.89521 0 127 33.00000 40.89521 23.9% - 0s 0 0 40.88181 0 128 33.00000 40.88181 23.9% - 0s 0 0 40.86908 0 128 33.00000 40.86908 23.8% - 0s 0 0 40.86908 0 127 33.00000 40.86908 23.8% - 0s 0 2 40.86850 0 126 33.00000 40.86850 23.8% - 0s H 13 11 34.0000000 40.66869 19.6% 57.5 0s * 67 23 8 35.0000000 40.22080 14.9% 44.2 0s 614 91 37.05172 10 123 35.00000 38.03333 8.67% 33.2 5s Cutting planes: Gomory: 1 Zero half: 56 Explored 1505 nodes (50830 simplex iterations) in 8.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%