Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:10:35 2012 Optimize a model with 857 rows, 132 columns and 1714 nonzeros Presolve removed 343 rows and 0 columns Presolve time: 0.01s Presolved: 514 rows, 132 columns, 1344 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 4.389474e+01, 357 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.89474 0 130 31.00000 43.89474 41.6% - 0s H 0 0 32.0000000 43.89474 37.2% - 0s 0 0 43.30252 0 131 32.00000 43.30252 35.3% - 0s 0 0 43.06109 0 131 32.00000 43.06109 34.6% - 0s 0 0 42.78607 0 131 32.00000 42.78607 33.7% - 0s 0 0 42.68123 0 132 32.00000 42.68123 33.4% - 0s H 0 0 33.0000000 42.68123 29.3% - 0s 0 0 42.63061 0 132 33.00000 42.63061 29.2% - 0s 0 0 42.54161 0 132 33.00000 42.54161 28.9% - 0s 0 0 42.41876 0 130 33.00000 42.41876 28.5% - 0s 0 0 42.38663 0 131 33.00000 42.38663 28.4% - 0s 0 0 42.35641 0 131 33.00000 42.35641 28.4% - 0s 0 0 42.32880 0 131 33.00000 42.32880 28.3% - 0s 0 0 42.32285 0 131 33.00000 42.32285 28.3% - 0s 0 0 42.32285 0 131 33.00000 42.32285 28.3% - 0s 0 2 42.32206 0 131 33.00000 42.32206 28.2% - 0s H 91 48 34.0000000 41.19811 21.2% 43.1 0s H 273 85 35.0000000 40.38270 15.4% 39.9 0s 612 165 37.01778 13 130 35.00000 39.27957 12.2% 36.2 5s 1660 183 37.25000 15 96 35.00000 37.55634 7.30% 35.8 10s Cutting planes: Gomory: 1 Zero half: 57 Explored 2122 nodes (71000 simplex iterations) in 10.48 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%