Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:04:40 2012 Optimize a model with 425 rows, 275 columns and 1335 nonzeros Presolve time: 0.00s Presolved: 425 rows, 275 columns, 1335 nonzeros Variable types: 0 continuous, 275 integer (275 binary) Found heuristic solution: objective 101.0000000 Root relaxation: objective 0.000000e+00, 95 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 63 101.00000 0.00000 100% - 0s H 0 0 96.0000000 0.00000 100% - 0s 0 0 0.88201 0 65 96.00000 0.88201 99.1% - 0s H 0 0 89.0000000 0.88201 99.0% - 0s 0 0 1.16411 0 74 89.00000 1.16411 98.7% - 0s 0 0 1.16645 0 75 89.00000 1.16645 98.7% - 0s 0 0 1.18182 0 64 89.00000 1.18182 98.7% - 0s 0 0 1.18739 0 93 89.00000 1.18739 98.7% - 0s 0 0 1.19934 0 67 89.00000 1.19934 98.7% - 0s 0 0 1.22197 0 84 89.00000 1.22197 98.6% - 0s 0 0 1.23359 0 90 89.00000 1.23359 98.6% - 0s 0 0 1.23359 0 90 89.00000 1.23359 98.6% - 0s H 0 0 82.0000000 1.23359 98.5% - 0s H 0 0 79.0000000 1.23359 98.4% - 0s 0 2 1.28274 0 90 79.00000 1.28274 98.4% - 0s H 32 32 72.0000000 5.31469 92.6% 38.0 0s H 163 125 70.0000000 12.32924 82.4% 26.2 0s * 224 167 26 62.0000000 12.32924 80.1% 26.6 0s * 582 369 24 61.0000000 17.34253 71.6% 25.0 0s * 928 508 36 60.0000000 19.53030 67.4% 27.2 1s * 1566 544 37 58.0000000 25.00000 56.9% 28.3 1s * 2262 659 36 57.0000000 29.14286 48.9% 28.3 2s * 2264 641 35 56.0000000 29.14286 48.0% 28.2 2s H 2349 654 55.0000000 29.28571 46.8% 28.3 2s H 2511 671 54.0000000 29.57143 45.2% 28.3 2s 4285 904 49.00000 26 136 54.00000 34.00000 37.0% 28.1 5s 9374 1141 cutoff 27 54.00000 39.91837 26.1% 27.2 10s 15416 757 cutoff 29 54.00000 43.90909 18.7% 26.3 15s Explored 18382 nodes (472101 simplex iterations) in 16.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0%