Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:35:35 2012 Optimize a model with 339 rows, 247 columns and 1092 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 339 rows, 246 columns, 1091 nonzeros Variable types: 0 continuous, 246 integer (245 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 129 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 76 74.00000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s 0 0 0.51466 0 77 61.00000 0.51466 99.2% - 0s H 0 0 52.0000000 0.51466 99.0% - 0s 0 0 1.00000 0 79 52.00000 1.00000 98.1% - 0s 0 0 1.00000 0 76 52.00000 1.00000 98.1% - 0s 0 2 1.00000 0 76 52.00000 1.00000 98.1% - 0s H 44 44 41.0000000 5.71604 86.1% 27.5 0s * 53 48 32 40.0000000 5.71604 85.7% 24.5 0s * 93 68 20 38.0000000 6.05296 84.1% 25.1 0s * 205 156 22 37.0000000 9.94118 73.1% 26.9 0s * 207 145 22 36.0000000 9.94118 72.4% 26.8 0s * 588 343 22 35.0000000 11.64706 66.7% 25.7 0s * 1219 477 32 34.0000000 13.17293 61.3% 26.4 1s H 2141 514 33.0000000 17.85714 45.9% 25.0 2s 5702 853 29.42857 26 106 33.00000 23.02857 30.2% 22.8 5s Cutting planes: Gomory: 1 Explored 11943 nodes (255595 simplex iterations) in 9.24 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%