Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:51:00 2012 Optimize a model with 589 rows, 112 columns and 1178 nonzeros Presolve removed 213 rows and 0 columns Presolve time: 0.00s Presolved: 376 rows, 112 columns, 933 nonzeros Variable types: 0 continuous, 112 integer (112 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.944444e+01, 255 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 39.44444 0 106 30.00000 39.44444 31.5% - 0s 0 0 38.90487 0 110 30.00000 38.90487 29.7% - 0s 0 0 38.65152 0 112 30.00000 38.65152 28.8% - 0s 0 0 38.60328 0 111 30.00000 38.60328 28.7% - 0s 0 0 38.51795 0 111 30.00000 38.51795 28.4% - 0s 0 0 38.26883 0 111 30.00000 38.26883 27.6% - 0s 0 0 38.07458 0 110 30.00000 38.07458 26.9% - 0s H 0 0 31.0000000 38.07458 22.8% - 0s 0 0 37.96593 0 110 31.00000 37.96593 22.5% - 0s 0 0 37.91179 0 111 31.00000 37.91179 22.3% - 0s 0 0 37.87421 0 109 31.00000 37.87421 22.2% - 0s 0 0 37.83827 0 109 31.00000 37.83827 22.1% - 0s 0 0 37.80895 0 108 31.00000 37.80895 22.0% - 0s 0 0 37.72189 0 110 31.00000 37.72189 21.7% - 0s 0 0 37.68237 0 110 31.00000 37.68237 21.6% - 0s 0 0 37.64963 0 108 31.00000 37.64963 21.5% - 0s 0 0 37.63479 0 110 31.00000 37.63479 21.4% - 0s 0 0 37.63479 0 109 31.00000 37.63479 21.4% - 0s 0 2 37.62645 0 108 31.00000 37.62645 21.4% - 0s * 105 26 11 33.0000000 36.53132 10.7% 28.7 0s Cutting planes: Clique: 1 Zero half: 63 Explored 289 nodes (9146 simplex iterations) in 0.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%