Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:55:38 2012 Optimize a model with 265 rows, 155 columns and 815 nonzeros Presolve time: 0.00s Presolved: 265 rows, 155 columns, 815 nonzeros Variable types: 0 continuous, 155 integer (155 binary) Found heuristic solution: objective 73.0000000 Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 47 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 23 65.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.86957 0 25 59.00000 0.86957 98.5% - 0s 0 0 0.89855 0 25 59.00000 0.89855 98.5% - 0s 0 0 0.89855 0 25 59.00000 0.89855 98.5% - 0s 0 0 0.89855 0 25 59.00000 0.89855 98.5% - 0s 0 0 0.89855 0 25 59.00000 0.89855 98.5% - 0s 0 2 1.08772 0 25 59.00000 1.08772 98.2% - 0s * 196 127 17 58.0000000 16.11111 72.2% 25.7 0s * 201 123 17 57.0000000 16.11111 71.7% 25.2 0s * 232 130 17 56.0000000 16.71429 70.2% 23.8 0s * 240 128 18 55.0000000 16.71429 69.6% 23.2 0s * 244 122 15 54.0000000 16.71429 69.0% 22.9 0s H 374 171 53.0000000 22.00000 58.5% 22.6 0s * 376 163 16 52.0000000 22.00000 57.7% 22.5 0s * 1169 143 25 51.0000000 30.60000 40.0% 22.3 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 2948 nodes (57710 simplex iterations) in 1.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.100000000000e+01, best bound 5.100000000000e+01, gap 0.0%