Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:00:49 2012 Optimize a model with 343 rows, 227 columns and 1082 nonzeros Presolve time: 0.00s Presolved: 343 rows, 227 columns, 1082 nonzeros Variable types: 0 continuous, 227 integer (227 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 0.000000e+00, 87 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 56 68.00000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.72000 0 58 65.00000 0.72000 98.9% - 0s 0 0 0.80000 0 58 65.00000 0.80000 98.8% - 0s 0 0 0.87076 0 61 65.00000 0.87076 98.7% - 0s 0 0 0.92000 0 58 65.00000 0.92000 98.6% - 0s 0 0 0.96129 0 79 65.00000 0.96129 98.5% - 0s 0 0 0.97403 0 63 65.00000 0.97403 98.5% - 0s 0 0 0.98663 0 78 65.00000 0.98663 98.5% - 0s 0 0 0.99606 0 79 65.00000 0.99606 98.5% - 0s H 0 0 60.0000000 0.99606 98.3% - 0s H 0 0 55.0000000 0.99606 98.2% - 0s 0 2 1.00507 0 79 55.00000 1.00507 98.2% - 0s * 37 36 20 54.0000000 5.18000 90.4% 30.5 0s * 45 34 21 53.0000000 5.18000 90.2% 26.6 0s * 75 52 21 48.0000000 5.18519 89.2% 26.2 0s * 169 103 23 47.0000000 8.99429 80.9% 25.5 0s * 573 273 18 46.0000000 16.90909 63.2% 23.9 0s * 963 388 29 45.0000000 18.00000 60.0% 26.1 0s * 1216 373 28 44.0000000 20.33333 53.8% 26.1 1s * 1578 295 24 42.0000000 23.10345 45.0% 26.0 1s 6474 134 40.40000 20 109 42.00000 36.13333 14.0% 22.4 5s Explored 6775 nodes (150337 simplex iterations) in 5.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%