Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:35:07 2012 Optimize a model with 1042 rows, 142 columns and 2084 nonzeros Presolve removed 395 rows and 0 columns Presolve time: 0.01s Presolved: 647 rows, 142 columns, 1695 nonzeros Variable types: 0 continuous, 142 integer (142 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.621727e+01, 418 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46.21727 0 142 27.00000 46.21727 71.2% - 0s 0 0 45.87588 0 141 27.00000 45.87588 69.9% - 0s H 0 0 28.0000000 45.87588 63.8% - 0s 0 0 45.74936 0 142 28.00000 45.74936 63.4% - 0s H 0 0 29.0000000 45.74936 57.8% - 0s 0 0 45.36099 0 141 29.00000 45.36099 56.4% - 0s 0 0 45.10352 0 141 29.00000 45.10352 55.5% - 0s 0 0 44.91305 0 142 29.00000 44.91305 54.9% - 0s 0 0 44.85073 0 141 29.00000 44.85073 54.7% - 0s 0 0 44.75085 0 142 29.00000 44.75085 54.3% - 0s H 0 0 30.0000000 44.75085 49.2% - 0s 0 0 44.67534 0 142 30.00000 44.67534 48.9% - 0s 0 0 44.57299 0 142 30.00000 44.57299 48.6% - 0s 0 0 44.42780 0 141 30.00000 44.42780 48.1% - 0s 0 0 44.35773 0 142 30.00000 44.35773 47.9% - 0s 0 0 44.25127 0 140 30.00000 44.25127 47.5% - 0s 0 0 44.14036 0 141 30.00000 44.14036 47.1% - 0s 0 0 44.08405 0 142 30.00000 44.08405 46.9% - 0s 0 0 44.04420 0 142 30.00000 44.04420 46.8% - 0s 0 0 43.99711 0 141 30.00000 43.99711 46.7% - 0s 0 0 43.96713 0 142 30.00000 43.96713 46.6% - 0s 0 0 43.95644 0 142 30.00000 43.95644 46.5% - 0s 0 0 43.95644 0 142 30.00000 43.95644 46.5% - 0s 0 2 43.95233 0 142 30.00000 43.95233 46.5% - 0s H 33 25 31.0000000 43.81425 41.3% 56.5 0s * 53 30 16 32.0000000 43.81425 36.9% 39.2 0s 609 309 37.48214 10 142 32.00000 41.29947 29.1% 39.2 5s H 1412 546 33.0000000 40.98304 24.2% 43.6 8s 1801 733 36.97826 31 91 33.00000 40.50000 22.7% 41.4 10s 5128 2390 37.41176 23 89 33.00000 38.65741 17.1% 33.3 15s 9341 3903 35.84211 32 87 33.00000 37.83161 14.6% 29.3 20s 13935 4948 34.95690 25 80 33.00000 37.23922 12.8% 27.1 25s *19203 3977 32 34.0000000 36.66667 7.84% 25.5 29s 19208 3974 35.50000 23 78 34.00000 36.66667 7.84% 25.5 30s Cutting planes: Gomory: 5 Clique: 4 Zero half: 54 Explored 25687 nodes (607048 simplex iterations) in 34.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%