Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:47:33 2012 Optimize a model with 309 rows, 207 columns and 977 nonzeros Presolve time: 0.00s Presolved: 309 rows, 207 columns, 977 nonzeros Variable types: 0 continuous, 207 integer (207 binary) Found heuristic solution: objective 67.0000000 Root relaxation: objective 0.000000e+00, 85 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 53 67.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.50943 0 54 64.00000 0.50943 99.2% - 0s H 0 0 60.0000000 0.50943 99.2% - 0s 0 0 1.12976 0 57 60.00000 1.12976 98.1% - 0s 0 0 1.14565 0 58 60.00000 1.14565 98.1% - 0s 0 0 1.15314 0 57 60.00000 1.15314 98.1% - 0s 0 0 1.15662 0 58 60.00000 1.15662 98.1% - 0s H 0 0 58.0000000 1.15662 98.0% - 0s H 0 0 47.0000000 1.15662 97.5% - 0s H 0 0 46.0000000 1.15662 97.5% - 0s 0 2 1.17396 0 58 46.00000 1.17396 97.4% - 0s * 36 36 21 44.0000000 4.69231 89.3% 27.8 0s * 39 33 20 43.0000000 4.69231 89.1% 25.8 0s H 81 59 41.0000000 7.18590 82.5% 28.1 0s * 211 157 20 40.0000000 10.09707 74.8% 30.0 0s * 1405 302 24 39.0000000 19.14286 50.9% 25.3 1s * 1855 337 23 38.0000000 21.00000 44.7% 24.7 1s * 4043 336 22 37.0000000 27.80000 24.9% 22.7 3s Explored 5646 nodes (123381 simplex iterations) in 4.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%