Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:22 2012 Optimize a model with 311 rows, 328 columns and 1103 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 311 rows, 304 columns, 1079 nonzeros Variable types: 0 continuous, 304 integer (303 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 188 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 0 121 48.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.17990 0 123 27.00000 0.17990 99.3% - 0s H 0 0 19.0000000 0.17990 99.1% - 0s H 0 0 16.0000000 0.17990 98.9% - 0s 0 0 0.74122 0 129 16.00000 0.74122 95.4% - 0s H 0 0 12.0000000 0.74122 93.8% - 0s 0 0 0.74122 0 129 12.00000 0.74122 93.8% - 0s H 0 0 10.0000000 0.74122 92.6% - 0s H 0 0 8.0000000 0.74122 90.7% - 0s 0 2 0.74707 0 129 8.00000 0.74707 90.7% - 0s * 27 17 16 4.0000000 1.10458 72.4% 29.6 0s Cutting planes: Gomory: 3 Explored 56 nodes (2878 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%