Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:39:14 2012 Optimize a model with 999 rows, 143 columns and 1998 nonzeros Presolve removed 385 rows and 0 columns Presolve time: 0.01s Presolved: 614 rows, 143 columns, 1579 nonzeros Variable types: 0 continuous, 143 integer (143 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.774090e+01, 348 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.74090 0 143 29.00000 47.74090 64.6% - 0s H 0 0 30.0000000 47.74090 59.1% - 0s 0 0 47.19105 0 142 30.00000 47.19105 57.3% - 0s 0 0 46.87960 0 143 30.00000 46.87960 56.3% - 0s H 0 0 31.0000000 46.87960 51.2% - 0s 0 0 46.74136 0 143 31.00000 46.74136 50.8% - 0s 0 0 46.46923 0 142 31.00000 46.46923 49.9% - 0s 0 0 46.20764 0 143 31.00000 46.20764 49.1% - 0s 0 0 46.03197 0 140 31.00000 46.03197 48.5% - 0s 0 0 45.94047 0 142 31.00000 45.94047 48.2% - 0s 0 0 45.81550 0 143 31.00000 45.81550 47.8% - 0s 0 0 45.72058 0 142 31.00000 45.72058 47.5% - 0s H 0 0 32.0000000 45.72058 42.9% - 0s 0 0 45.68289 0 143 32.00000 45.68289 42.8% - 0s 0 0 45.63690 0 143 32.00000 45.63690 42.6% - 0s 0 0 45.60151 0 142 32.00000 45.60151 42.5% - 0s 0 0 45.51508 0 143 32.00000 45.51508 42.2% - 0s 0 0 45.43330 0 143 32.00000 45.43330 42.0% - 0s H 0 0 33.0000000 45.43330 37.7% - 0s 0 0 45.43141 0 143 33.00000 45.43141 37.7% - 0s 0 0 45.43141 0 143 33.00000 45.43141 37.7% - 0s 0 2 45.43101 0 143 33.00000 45.43101 37.7% - 0s H 112 61 34.0000000 44.47321 30.8% 46.4 0s H 115 55 35.0000000 44.47321 27.1% 45.5 0s 612 249 38.80000 12 143 35.00000 42.57622 21.6% 40.8 5s 624 259 42.57622 10 127 35.00000 42.57622 21.6% 43.3 10s 2829 1220 38.25000 36 96 35.00000 40.60800 16.0% 39.7 15s 6243 2125 37.40000 32 94 35.00000 39.22200 12.1% 32.8 20s 10859 2518 37.50183 18 90 35.00000 38.18000 9.09% 29.2 25s 13710 2288 cutoff 37 35.00000 37.66667 7.62% 28.0 30s Cutting planes: Gomory: 1 Clique: 1 Zero half: 58 Explored 18945 nodes (491151 simplex iterations) in 33.57 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%