Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:46:34 2012 Optimize a model with 453 rows, 321 columns and 1451 nonzeros Presolve time: 0.00s Presolved: 453 rows, 321 columns, 1451 nonzeros Variable types: 0 continuous, 321 integer (321 binary) Found heuristic solution: objective 101.0000000 Found heuristic solution: objective 100.0000000 Root relaxation: objective 0.000000e+00, 125 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 95 100.00000 0.00000 100% - 0s H 0 0 86.0000000 0.00000 100% - 0s 0 0 0.55226 0 96 86.00000 0.55226 99.4% - 0s H 0 0 85.0000000 0.55226 99.4% - 0s 0 0 1.03774 0 98 85.00000 1.03774 98.8% - 0s 0 0 1.15037 0 103 85.00000 1.15037 98.6% - 0s H 0 0 83.0000000 1.15037 98.6% - 0s 0 0 1.15428 0 105 83.00000 1.15428 98.6% - 0s H 0 0 70.0000000 1.15428 98.4% - 0s H 0 0 66.0000000 1.15428 98.3% - 0s H 0 0 64.0000000 1.15428 98.2% - 0s 0 2 1.15809 0 105 64.00000 1.15809 98.2% - 0s * 58 58 30 51.0000000 3.55900 93.0% 31.9 0s * 107 97 25 50.0000000 3.69946 92.6% 30.7 0s * 1673 712 33 48.0000000 19.50000 59.4% 27.9 2s H 2366 858 47.0000000 22.68657 51.7% 27.8 3s * 2696 937 33 46.0000000 23.50000 48.9% 27.7 3s 3863 1260 42.02469 26 150 46.00000 25.00000 45.7% 27.4 5s 8425 2064 cutoff 30 46.00000 29.45238 36.0% 26.6 10s 13809 2661 cutoff 28 46.00000 32.37097 29.6% 25.6 15s 19406 3036 cutoff 30 46.00000 34.00000 26.1% 25.2 20s 25489 3201 cutoff 29 46.00000 35.26923 23.3% 24.7 25s *29801 3072 36 45.0000000 36.00000 20.0% 24.3 28s H29832 2854 44.0000000 36.00000 18.2% 24.3 29s 31160 2742 40.43836 28 140 44.00000 36.21569 17.7% 24.2 30s 37865 1948 cutoff 28 44.00000 37.60000 14.5% 23.5 35s Explored 45059 nodes (1022037 simplex iterations) in 39.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%