Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:48:20 2012 Optimize a model with 323 rows, 243 columns and 1048 nonzeros Presolve time: 0.00s Presolved: 323 rows, 243 columns, 1048 nonzeros Variable types: 0 continuous, 243 integer (243 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 117 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 70.00000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.53745 0 83 49.00000 0.53745 98.9% - 0s H 0 0 46.0000000 0.53745 98.8% - 0s 0 0 1.07049 0 87 46.00000 1.07049 97.7% - 0s 0 0 1.08356 0 87 46.00000 1.08356 97.6% - 0s 0 2 1.09220 0 87 46.00000 1.09220 97.6% - 0s * 30 30 18 27.0000000 3.36773 87.5% 33.8 0s * 520 198 15 26.0000000 11.00000 57.7% 27.3 0s * 717 221 20 24.0000000 12.00557 50.0% 27.8 0s Explored 943 nodes (26634 simplex iterations) in 1.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%