Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:50 2012 Optimize a model with 275 rows, 203 columns and 888 nonzeros Presolve time: 0.00s Presolved: 275 rows, 203 columns, 888 nonzeros Variable types: 0 continuous, 203 integer (203 binary) Found heuristic solution: objective 64.0000000 Root relaxation: objective 0.000000e+00, 95 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 65 64.00000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 0 0.52513 0 66 40.00000 0.52513 98.7% - 0s H 0 0 39.0000000 0.52513 98.7% - 0s 0 0 1.14725 0 67 39.00000 1.14725 97.1% - 0s 0 0 1.37437 0 69 39.00000 1.37437 96.5% - 0s 0 0 1.37576 0 70 39.00000 1.37576 96.5% - 0s 0 2 1.37710 0 70 39.00000 1.37710 96.5% - 0s * 30 30 17 31.0000000 2.31810 92.5% 29.6 0s * 242 180 15 30.0000000 6.28253 79.1% 32.7 0s * 284 180 14 29.0000000 6.67303 77.0% 31.1 0s * 289 174 16 28.0000000 6.67303 76.2% 30.8 0s * 512 225 12 27.0000000 9.17647 66.0% 30.0 0s * 1007 199 19 26.0000000 15.70968 39.6% 26.7 0s * 1736 55 24 25.0000000 19.58333 21.7% 23.3 1s Explored 1873 nodes (43099 simplex iterations) in 1.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%