Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:04:29 2012 Optimize a model with 453 rows, 427 columns and 1557 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 453 rows, 405 columns, 1535 nonzeros Variable types: 0 continuous, 405 integer (404 binary) Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 231 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 0 178 96.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.30998 0 180 60.00000 0.30998 99.5% - 0s H 0 0 54.0000000 0.30998 99.4% - 0s 0 0 0.97720 0 183 54.00000 0.97720 98.2% - 0s H 0 0 47.0000000 0.97720 97.9% - 0s H 0 0 43.0000000 0.97720 97.7% - 0s 0 0 0.98008 0 183 43.00000 0.98008 97.7% - 0s H 0 0 42.0000000 0.98008 97.7% - 0s H 0 0 38.0000000 0.98008 97.4% - 0s 0 2 0.98387 0 183 38.00000 0.98387 97.4% - 0s H 54 54 21.0000000 1.18100 94.4% 24.9 0s * 75 48 45 20.0000000 1.18100 94.1% 24.4 0s * 104 62 17 19.0000000 1.18123 93.8% 26.5 0s H 128 60 17.0000000 2.35051 86.2% 27.2 0s * 179 77 19 16.0000000 3.88066 75.7% 32.2 0s * 657 80 13 15.0000000 9.88462 34.1% 32.9 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 858 nodes (28284 simplex iterations) in 1.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%