Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:11 2012 Optimize a model with 239 rows, 166 columns and 761 nonzeros Presolve time: 0.00s Presolved: 239 rows, 166 columns, 761 nonzeros Variable types: 0 continuous, 166 integer (166 binary) Found heuristic solution: objective 58.0000000 Root relaxation: objective 0.000000e+00, 80 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 47 58.00000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s 0 0 0.50704 0 50 42.00000 0.50704 98.8% - 0s H 0 0 41.0000000 0.50704 98.8% - 0s 0 0 0.62876 0 51 41.00000 0.62876 98.5% - 0s 0 0 0.69575 0 51 41.00000 0.69575 98.3% - 0s 0 0 0.71262 0 53 41.00000 0.71262 98.3% - 0s 0 0 0.92934 0 56 41.00000 0.92934 97.7% - 0s 0 0 0.94906 0 52 41.00000 0.94906 97.7% - 0s 0 0 0.97354 0 55 41.00000 0.97354 97.6% - 0s 0 0 0.97939 0 60 41.00000 0.97939 97.6% - 0s 0 2 1.02839 0 60 41.00000 1.02839 97.5% - 0s * 34 34 23 39.0000000 3.81447 90.2% 20.7 0s * 41 34 25 38.0000000 3.81447 90.0% 18.1 0s * 67 51 18 36.0000000 3.83819 89.3% 20.4 0s * 89 60 12 34.0000000 8.97297 73.6% 21.0 0s * 170 109 17 33.0000000 11.29759 65.8% 21.1 0s * 199 119 14 32.0000000 11.31333 64.6% 20.8 0s * 343 150 15 31.0000000 14.56416 53.0% 18.2 0s * 344 143 14 30.0000000 14.56416 51.5% 18.2 0s * 530 138 12 29.0000000 17.77778 38.7% 17.3 0s Cutting planes: Gomory: 1 Zero half: 4 Mod-K: 3 Explored 1258 nodes (18910 simplex iterations) in 0.62 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%