Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:08:15 2012 Optimize a model with 327 rows, 248 columns and 1063 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 327 rows, 247 columns, 1062 nonzeros Variable types: 0 continuous, 247 integer (246 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 123 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 83 70.00000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.49398 0 84 59.00000 0.49398 99.2% - 0s H 0 0 58.0000000 0.49398 99.1% - 0s 0 0 1.00000 0 88 58.00000 1.00000 98.3% - 0s 0 0 1.00000 0 87 58.00000 1.00000 98.3% - 0s 0 0 1.00000 0 86 58.00000 1.00000 98.3% - 0s H 0 0 57.0000000 1.00000 98.2% - 0s H 0 0 55.0000000 1.00000 98.2% - 0s 0 2 1.00000 0 85 55.00000 1.00000 98.2% - 0s H 27 27 43.0000000 4.35481 89.9% 46.7 0s * 42 40 25 37.0000000 4.35481 88.2% 34.2 0s H 81 46 30.0000000 5.53795 81.5% 29.5 0s * 279 155 17 29.0000000 10.33333 64.4% 30.1 0s * 287 145 18 28.0000000 10.33333 63.1% 29.5 0s * 421 170 14 27.0000000 12.00000 55.6% 28.1 0s * 526 157 18 25.0000000 13.95183 44.2% 27.0 0s Cutting planes: Gomory: 3 Explored 1296 nodes (29131 simplex iterations) in 0.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%