Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:17:54 2012 Optimize a model with 355 rows, 265 columns and 1150 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 355 rows, 264 columns, 1149 nonzeros Variable types: 0 continuous, 264 integer (263 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 0.000000e+00, 128 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 72.00000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.51279 0 87 62.00000 0.51279 99.2% - 0s H 0 0 58.0000000 0.51279 99.1% - 0s 0 0 1.00716 0 89 58.00000 1.00716 98.3% - 0s H 0 0 56.0000000 1.00716 98.2% - 0s 0 0 1.26341 0 90 56.00000 1.26341 97.7% - 0s 0 0 1.26692 0 91 56.00000 1.26692 97.7% - 0s H 0 0 51.0000000 1.26692 97.5% - 0s 0 2 1.33964 0 91 51.00000 1.33964 97.4% - 0s H 32 32 40.0000000 3.97328 90.1% 38.6 0s * 44 38 26 39.0000000 3.97328 89.8% 30.5 0s * 68 51 15 34.0000000 3.99355 88.3% 34.5 0s * 168 105 25 33.0000000 5.86584 82.2% 32.6 0s * 812 362 23 32.0000000 10.90327 65.9% 31.0 1s * 1417 266 23 31.0000000 15.95000 48.5% 27.1 1s * 3069 347 21 30.0000000 20.97222 30.1% 23.8 3s Explored 5400 nodes (120093 simplex iterations) in 4.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%