Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:09:36 2012 Optimize a model with 373 rows, 244 columns and 1174 nonzeros Presolve time: 0.00s Presolved: 373 rows, 244 columns, 1174 nonzeros Variable types: 0 continuous, 244 integer (244 binary) Found heuristic solution: objective 79.0000000 Root relaxation: objective 0.000000e+00, 86 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 58 79.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 1.18431 0 64 76.00000 1.18431 98.4% - 0s H 0 0 74.0000000 1.18431 98.4% - 0s 0 0 1.20588 0 60 74.00000 1.20588 98.4% - 0s H 0 0 68.0000000 1.20588 98.2% - 0s 0 0 1.23529 0 60 68.00000 1.23529 98.2% - 0s 0 0 1.23529 0 60 68.00000 1.23529 98.2% - 0s 0 0 1.26144 0 63 68.00000 1.26144 98.1% - 0s 0 0 1.32177 0 74 68.00000 1.32177 98.1% - 0s 0 0 1.32353 0 60 68.00000 1.32353 98.1% - 0s 0 0 1.32353 0 60 68.00000 1.32353 98.1% - 0s 0 0 1.32353 0 60 68.00000 1.32353 98.1% - 0s 0 2 1.33951 0 60 68.00000 1.33951 98.0% - 0s H 40 40 61.0000000 5.14322 91.6% 27.1 0s H 40 40 58.0000000 5.14322 91.1% 27.1 0s * 43 36 24 57.0000000 5.14322 91.0% 26.4 0s * 131 96 24 56.0000000 8.88603 84.1% 22.3 0s * 234 149 19 48.0000000 14.06522 70.7% 23.2 0s H 852 355 45.0000000 19.65116 56.3% 25.3 1s 5254 197 40.90909 22 115 45.00000 36.68421 18.5% 24.9 5s Explored 5975 nodes (145094 simplex iterations) in 5.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%