Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:45:04 2012 Optimize a model with 361 rows, 261 columns and 1161 nonzeros Presolve time: 0.00s Presolved: 361 rows, 261 columns, 1161 nonzeros Variable types: 0 continuous, 261 integer (261 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 131 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 81 74.00000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.99702 0 83 62.00000 0.99702 98.4% - 0s H 0 0 60.0000000 0.99702 98.3% - 0s 0 0 1.05696 0 83 60.00000 1.05696 98.2% - 0s H 0 0 58.0000000 1.05696 98.2% - 0s 0 0 1.07115 0 84 58.00000 1.07115 98.2% - 0s H 0 0 57.0000000 1.07115 98.1% - 0s 0 2 1.13031 0 84 57.00000 1.13031 98.0% - 0s * 43 40 26 46.0000000 3.75392 91.8% 24.0 0s H 80 64 40.0000000 3.77586 90.6% 25.1 0s H 352 188 33.0000000 9.83678 70.2% 22.9 0s 6529 825 30.19697 21 115 33.00000 24.20000 26.7% 19.1 5s Explored 12553 nodes (231447 simplex iterations) in 8.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%