Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:28:44 2012 Optimize a model with 383 rows, 255 columns and 1210 nonzeros Presolve time: 0.00s Presolved: 383 rows, 255 columns, 1210 nonzeros Variable types: 0 continuous, 255 integer (255 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 93 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 64 88.00000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s 0 0 0.82609 0 66 72.00000 0.82609 98.9% - 0s 0 0 0.93478 0 66 72.00000 0.93478 98.7% - 0s 0 0 0.97521 0 66 72.00000 0.97521 98.6% - 0s 0 0 0.97521 0 66 72.00000 0.97521 98.6% - 0s 0 0 1.00890 0 69 72.00000 1.00890 98.6% - 0s 0 0 1.03102 0 70 72.00000 1.03102 98.6% - 0s 0 0 1.11572 0 79 72.00000 1.11572 98.5% - 0s H 0 0 70.0000000 1.11572 98.4% - 0s 0 0 1.11644 0 75 70.00000 1.11644 98.4% - 0s 0 0 1.13043 0 66 70.00000 1.13043 98.4% - 0s 0 0 1.13087 0 76 70.00000 1.13087 98.4% - 0s H 0 0 67.0000000 1.13087 98.3% - 0s 0 2 1.14774 0 76 67.00000 1.14774 98.3% - 0s H 32 32 55.0000000 4.81188 91.3% 36.3 0s H 81 61 53.0000000 8.17391 84.6% 29.9 0s * 113 89 19 49.0000000 8.17391 83.3% 28.9 0s H 324 225 47.0000000 12.65217 73.1% 25.9 0s * 332 223 17 46.0000000 12.65217 72.5% 25.8 0s * 358 214 17 45.0000000 12.65217 71.9% 24.8 0s * 1673 348 31 43.0000000 24.70588 42.5% 27.2 1s 5136 372 39.38462 24 122 43.00000 32.55172 24.3% 25.4 5s Explored 7124 nodes (174549 simplex iterations) in 6.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%