Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:02:31 2012 Optimize a model with 313 rows, 182 columns and 962 nonzeros Presolve time: 0.00s Presolved: 313 rows, 182 columns, 962 nonzeros Variable types: 0 continuous, 182 integer (182 binary) Found heuristic solution: objective 86.0000000 Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 51 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 26 84.00000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.94444 0 38 75.00000 0.94444 98.7% - 0s H 0 0 67.0000000 0.94444 98.6% - 0s 0 0 1.00000 0 28 67.00000 1.00000 98.5% - 0s 0 0 1.00000 0 28 67.00000 1.00000 98.5% - 0s 0 0 1.00000 0 28 67.00000 1.00000 98.5% - 0s 0 0 1.00000 0 28 67.00000 1.00000 98.5% - 0s 0 2 1.07222 0 28 67.00000 1.07222 98.4% - 0s * 26 26 14 65.0000000 9.00000 86.2% 37.9 0s * 57 40 14 63.0000000 9.00000 85.7% 29.3 0s * 81 52 13 60.0000000 15.50000 74.2% 29.1 0s * 460 178 14 59.0000000 27.38889 53.6% 25.8 0s H 1814 197 58.0000000 39.60000 31.7% 24.7 1s Cutting planes: Gomory: 1 Zero half: 4 Explored 3818 nodes (86929 simplex iterations) in 2.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.800000000000e+01, best bound 5.800000000000e+01, gap 0.0%