Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:54:30 2012 Optimize a model with 3264 rows, 114 columns and 6528 nonzeros Presolve removed 2287 rows and 0 columns Presolve time: 0.12s Presolved: 977 rows, 114 columns, 7098 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.503404e+01, 494 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.03404 0 110 7.00000 15.03404 115% - 0s H 0 0 8.0000000 15.03404 87.9% - 0s H 0 0 9.0000000 15.03404 67.0% - 0s 0 0 14.79776 0 112 9.00000 14.79776 64.4% - 0s 0 0 14.73167 0 112 9.00000 14.73167 63.7% - 0s 0 0 14.71681 0 111 9.00000 14.71681 63.5% - 0s 0 0 14.69736 0 111 9.00000 14.69736 63.3% - 0s 0 0 14.66195 0 113 9.00000 14.66195 62.9% - 0s 0 0 14.64127 0 113 9.00000 14.64127 62.7% - 1s 0 0 14.61980 0 113 9.00000 14.61980 62.4% - 1s 0 0 14.61482 0 113 9.00000 14.61482 62.4% - 1s 0 0 14.61416 0 113 9.00000 14.61416 62.4% - 1s 0 0 14.61411 0 113 9.00000 14.61411 62.4% - 1s 0 0 14.61411 0 113 9.00000 14.61411 62.4% - 1s 0 2 14.61357 0 113 9.00000 14.61357 62.4% - 2s Cutting planes: Clique: 73 Zero half: 1 Explored 390 nodes (24388 simplex iterations) in 3.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%