Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:05 2012 Optimize a model with 169 rows, 102 columns and 522 nonzeros Presolve time: 0.00s Presolved: 169 rows, 102 columns, 522 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 48.0000000 Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 31 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 18 47.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 1.16667 0 20 45.00000 1.16667 97.4% - 0s 0 0 1.25000 0 20 45.00000 1.25000 97.2% - 0s 0 0 1.25000 0 20 45.00000 1.25000 97.2% - 0s 0 0 1.25000 0 20 45.00000 1.25000 97.2% - 0s 0 0 1.25000 0 20 45.00000 1.25000 97.2% - 0s H 0 0 43.0000000 1.25000 97.1% - 0s 0 2 1.37500 0 20 43.00000 1.37500 96.8% - 0s * 21 19 12 41.0000000 6.01282 85.3% 25.4 0s * 68 39 13 40.0000000 10.55556 73.6% 19.6 0s * 96 47 13 38.0000000 10.73333 71.8% 18.6 0s * 164 69 12 37.0000000 14.33333 61.3% 16.8 0s * 199 69 11 36.0000000 14.46667 59.8% 15.3 0s * 272 81 12 35.0000000 19.24242 45.0% 14.9 0s * 314 67 8 32.0000000 19.57692 38.8% 14.3 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 575 nodes (7743 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%