Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:38:15 2012 Optimize a model with 301 rows, 229 columns and 979 nonzeros Presolve time: 0.00s Presolved: 301 rows, 229 columns, 979 nonzeros Variable types: 0 continuous, 229 integer (229 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 137 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 78 65.00000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s 0 0 0.52778 0 79 50.00000 0.52778 98.9% - 0s H 0 0 48.0000000 0.52778 98.9% - 0s 0 0 1.20592 0 80 48.00000 1.20592 97.5% - 0s H 0 0 47.0000000 1.20592 97.4% - 0s 0 0 1.32899 0 81 47.00000 1.32899 97.2% - 0s H 0 0 42.0000000 1.32899 96.8% - 0s H 0 0 40.0000000 1.32899 96.7% - 0s 0 0 1.39250 0 81 40.00000 1.39250 96.5% - 0s H 0 0 39.0000000 1.39250 96.4% - 0s 0 0 1.45082 0 84 39.00000 1.45082 96.3% - 0s 0 0 1.45326 0 84 39.00000 1.45326 96.3% - 0s 0 0 1.45326 0 84 39.00000 1.45326 96.3% - 0s 0 2 1.47210 0 84 39.00000 1.47210 96.2% - 0s * 33 30 21 31.0000000 3.61855 88.3% 33.4 0s * 264 186 24 29.0000000 7.87492 72.8% 27.4 0s * 282 179 16 28.0000000 7.92793 71.7% 26.8 0s * 689 315 26 27.0000000 11.92583 55.8% 26.3 0s Explored 2785 nodes (62382 simplex iterations) in 2.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%