Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:54:38 2012 Optimize a model with 267 rows, 187 columns and 852 nonzeros Presolve time: 0.00s Presolved: 267 rows, 187 columns, 852 nonzeros Variable types: 0 continuous, 187 integer (187 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 87 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 54 65.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.73913 0 56 49.00000 0.73913 98.5% - 0s 0 0 0.78261 0 56 49.00000 0.78261 98.4% - 0s 0 0 0.91304 0 56 49.00000 0.91304 98.1% - 0s 0 0 0.95652 0 56 49.00000 0.95652 98.0% - 0s 0 0 0.95652 0 56 49.00000 0.95652 98.0% - 0s 0 0 0.95652 0 56 49.00000 0.95652 98.0% - 0s H 0 0 46.0000000 0.95652 97.9% - 0s H 0 0 45.0000000 0.95652 97.9% - 0s 0 2 0.95652 0 56 45.00000 0.95652 97.9% - 0s * 29 27 18 36.0000000 3.80870 89.4% 32.4 0s * 53 40 14 31.0000000 3.83261 87.6% 29.9 0s * 115 73 14 30.0000000 6.21387 79.3% 28.1 0s * 341 123 15 29.0000000 10.06630 65.3% 25.0 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 1471 nodes (28692 simplex iterations) in 0.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%