Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:53:25 2012 Optimize a model with 385 rows, 258 columns and 1218 nonzeros Presolve time: 0.00s Presolved: 385 rows, 258 columns, 1218 nonzeros Variable types: 0 continuous, 258 integer (258 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 103 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 66 91.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.76000 0 68 71.00000 0.76000 98.9% - 0s H 0 0 64.0000000 0.76000 98.8% - 0s 0 0 0.90000 0 68 64.00000 0.90000 98.6% - 0s H 0 0 59.0000000 0.90000 98.5% - 0s 0 0 0.96000 0 68 59.00000 0.96000 98.4% - 0s 0 0 0.98000 0 70 59.00000 0.98000 98.3% - 0s 0 0 0.98667 0 68 59.00000 0.98667 98.3% - 0s 0 0 1.05333 0 69 59.00000 1.05333 98.2% - 0s 0 0 1.05333 0 69 59.00000 1.05333 98.2% - 0s 0 0 1.06000 0 68 59.00000 1.06000 98.2% - 0s 0 0 1.08000 0 73 59.00000 1.08000 98.2% - 0s H 0 0 52.0000000 1.08000 97.9% - 0s 0 0 1.12000 0 68 52.00000 1.12000 97.8% - 0s 0 0 1.12000 0 68 52.00000 1.12000 97.8% - 0s 0 0 1.12000 0 68 52.00000 1.12000 97.8% - 0s 0 2 1.12798 0 68 52.00000 1.12798 97.8% - 0s * 175 125 19 51.0000000 7.90000 84.5% 30.7 0s * 231 174 21 50.0000000 11.88000 76.2% 31.6 0s * 236 175 23 49.0000000 11.88000 75.8% 31.2 0s * 291 202 14 48.0000000 11.91357 75.2% 31.3 0s * 531 274 19 47.0000000 16.35077 65.2% 27.8 0s * 1093 449 32 46.0000000 19.32000 58.0% 29.4 1s 5455 705 44.58824 26 126 46.00000 35.54054 22.7% 22.3 5s Explored 11615 nodes (230887 simplex iterations) in 8.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%