Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:38:12 2012 Optimize a model with 349 rows, 253 columns and 1123 nonzeros Presolve time: 0.00s Presolved: 349 rows, 253 columns, 1123 nonzeros Variable types: 0 continuous, 253 integer (253 binary) Found heuristic solution: objective 80.0000000 Root relaxation: objective 0.000000e+00, 121 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 80.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.50000 0 79 60.00000 0.50000 99.2% - 0s H 0 0 54.0000000 0.50000 99.1% - 0s 0 0 1.13290 0 81 54.00000 1.13290 97.9% - 0s H 0 0 52.0000000 1.13290 97.8% - 0s 0 0 1.15482 0 83 52.00000 1.15482 97.8% - 0s 0 0 1.16678 0 84 52.00000 1.16678 97.8% - 0s 0 2 1.18268 0 84 52.00000 1.18268 97.7% - 0s H 27 27 49.0000000 4.68485 90.4% 36.7 0s * 41 40 29 43.0000000 4.68485 89.1% 27.8 0s * 84 61 24 42.0000000 4.71821 88.8% 25.4 0s * 122 88 26 41.0000000 9.51643 76.8% 26.1 0s H 169 111 38.0000000 9.57059 74.8% 25.6 0s * 242 150 16 37.0000000 11.60526 68.6% 27.0 0s * 302 140 19 34.0000000 12.59769 62.9% 25.2 0s H 572 193 31.0000000 16.71717 46.1% 24.9 0s Explored 2935 nodes (65240 simplex iterations) in 2.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%