Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:10:19 2012 Optimize a model with 882 rows, 132 columns and 1764 nonzeros Presolve removed 339 rows and 0 columns Presolve time: 0.01s Presolved: 543 rows, 132 columns, 1404 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.499477e+01, 359 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.99477 0 129 29.00000 44.99477 55.2% - 0s H 0 0 33.0000000 44.99477 36.3% - 0s 0 0 44.39755 0 128 33.00000 44.39755 34.5% - 0s 0 0 44.01083 0 129 33.00000 44.01083 33.4% - 0s 0 0 43.40663 0 131 33.00000 43.40663 31.5% - 0s 0 0 43.14615 0 130 33.00000 43.14615 30.7% - 0s 0 0 43.04768 0 130 33.00000 43.04768 30.4% - 0s 0 0 43.00849 0 129 33.00000 43.00849 30.3% - 0s 0 0 42.85568 0 129 33.00000 42.85568 29.9% - 0s 0 0 42.75542 0 128 33.00000 42.75542 29.6% - 0s 0 0 42.67601 0 129 33.00000 42.67601 29.3% - 0s 0 0 42.64286 0 128 33.00000 42.64286 29.2% - 0s 0 0 42.63034 0 128 33.00000 42.63034 29.2% - 0s 0 2 42.62881 0 128 33.00000 42.62881 29.2% - 0s * 112 56 11 34.0000000 41.99436 23.5% 42.3 0s * 263 90 10 35.0000000 40.91589 16.9% 39.3 0s 612 194 38.25000 11 132 35.00000 40.14846 14.7% 35.6 5s 628 205 39.58465 9 130 35.00000 40.14846 14.7% 34.7 10s 1981 279 37.20408 22 92 35.00000 37.83333 8.10% 37.9 15s Cutting planes: Clique: 5 Zero half: 94 Explored 2719 nodes (95327 simplex iterations) in 16.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%