Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:15 2012 Optimize a model with 229 rows, 186 columns and 756 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 229 rows, 184 columns, 754 nonzeros Variable types: 0 continuous, 184 integer (183 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 110 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 69 47.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.47143 0 72 34.00000 0.47143 98.6% - 0s H 0 0 32.0000000 0.47143 98.5% - 0s 0 0 0.99812 0 74 32.00000 0.99812 96.9% - 0s H 0 0 30.0000000 0.99812 96.7% - 0s 0 0 0.99835 0 75 30.00000 0.99835 96.7% - 0s 0 0 0.99835 0 75 30.00000 0.99835 96.7% - 0s 0 2 1.00383 0 75 30.00000 1.00383 96.7% - 0s * 24 24 17 22.0000000 2.91152 86.8% 30.8 0s * 47 33 14 21.0000000 2.91532 86.1% 28.1 0s * 72 42 16 20.0000000 2.93269 85.3% 25.8 0s * 145 69 12 19.0000000 7.06397 62.8% 25.9 0s * 167 66 8 18.0000000 7.14196 60.3% 25.6 0s * 178 53 12 17.0000000 7.14196 58.0% 25.0 0s Cutting planes: Gomory: 4 Zero half: 4 Explored 364 nodes (9369 simplex iterations) in 0.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%