Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:27:13 2012 Optimize a model with 399 rows, 228 columns and 1223 nonzeros Presolve time: 0.00s Presolved: 399 rows, 228 columns, 1223 nonzeros Variable types: 0 continuous, 228 integer (228 binary) Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 61 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 29 96.00000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s 0 0 0.71618 0 31 92.00000 0.71618 99.2% - 0s 0 0 0.82228 0 31 92.00000 0.82228 99.1% - 0s H 0 0 90.0000000 0.82228 99.1% - 0s 0 0 0.83439 0 44 90.00000 0.83439 99.1% - 0s 0 0 0.84881 0 31 90.00000 0.84881 99.1% - 0s 0 0 0.87533 0 31 90.00000 0.87533 99.0% - 0s 0 0 0.90186 0 31 90.00000 0.90186 99.0% - 0s 0 0 0.90186 0 31 90.00000 0.90186 99.0% - 0s 0 0 0.90186 0 31 90.00000 0.90186 99.0% - 0s 0 0 0.90186 0 31 90.00000 0.90186 99.0% - 0s H 0 0 87.0000000 0.90186 99.0% - 0s 0 2 1.02804 0 31 87.00000 1.02804 98.8% - 0s * 240 157 18 85.0000000 18.81065 77.9% 37.2 0s * 500 259 20 83.0000000 27.30769 67.1% 32.1 0s * 1465 338 31 82.0000000 40.61538 50.5% 30.5 1s * 1532 359 32 81.0000000 40.75481 49.7% 30.2 1s * 3272 731 30 80.0000000 50.66667 36.7% 28.0 3s 5104 968 62.25000 23 123 80.00000 55.50000 30.6% 26.9 5s 12110 1277 76.00000 25 125 80.00000 64.50000 19.4% 24.2 10s *12910 1195 31 79.0000000 65.00000 17.7% 24.0 10s Cutting planes: Gomory: 1 Mod-K: 4 Explored 20372 nodes (457103 simplex iterations) in 14.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.900000000000e+01, best bound 7.900000000000e+01, gap 0.0%