Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:21:11 2012 Optimize a model with 375 rows, 277 columns and 1212 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 375 rows, 274 columns, 1209 nonzeros Variable types: 0 continuous, 274 integer (273 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 134 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 86 82.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s 0 0 0.65155 0 87 66.00000 0.65155 99.0% - 0s H 0 0 64.0000000 0.65155 99.0% - 0s 0 0 1.01705 0 88 64.00000 1.01705 98.4% - 0s H 0 0 62.0000000 1.01705 98.4% - 0s H 0 0 59.0000000 1.01705 98.3% - 0s 0 2 1.03333 0 88 59.00000 1.03333 98.2% - 0s H 54 47 40.0000000 5.18985 87.0% 24.1 0s * 90 68 21 38.0000000 5.97917 84.3% 27.0 0s * 526 352 20 37.0000000 11.14336 69.9% 28.4 0s * 552 358 25 36.0000000 11.31395 68.6% 27.9 0s * 604 372 20 35.0000000 11.63243 66.8% 27.5 0s * 624 361 23 34.0000000 11.69167 65.6% 27.1 0s * 1048 494 31 31.0000000 13.41425 56.7% 28.3 1s 4485 336 23.37838 23 117 31.00000 22.00000 29.0% 24.9 5s Cutting planes: Gomory: 2 Zero half: 1 Explored 6410 nodes (154500 simplex iterations) in 6.65 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%