Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:16:11 2012 Optimize a model with 377 rows, 216 columns and 1156 nonzeros Presolve time: 0.00s Presolved: 377 rows, 216 columns, 1156 nonzeros Variable types: 0 continuous, 216 integer (216 binary) Found heuristic solution: objective 92.0000000 Root relaxation: objective 0.000000e+00, 61 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 28 92.00000 0.00000 100% - 0s H 0 0 90.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s 0 0 0.58333 0 29 88.00000 0.58333 99.3% - 0s 0 0 1.48077 0 31 88.00000 1.48077 98.3% - 0s 0 0 1.85470 0 32 88.00000 1.85470 97.9% - 0s 0 0 2.00748 0 33 88.00000 2.00748 97.7% - 0s 0 0 2.05342 0 33 88.00000 2.05342 97.7% - 0s 0 0 2.07585 0 33 88.00000 2.07585 97.6% - 0s 0 0 2.10791 0 33 88.00000 2.10791 97.6% - 0s 0 0 2.12999 0 36 88.00000 2.12999 97.6% - 0s 0 0 2.14530 0 33 88.00000 2.14530 97.6% - 0s 0 0 2.23186 0 47 88.00000 2.23186 97.5% - 0s 0 0 2.27778 0 33 88.00000 2.27778 97.4% - 0s 0 0 2.31090 0 35 88.00000 2.31090 97.4% - 0s 0 0 2.35417 0 35 88.00000 2.35417 97.3% - 0s 0 0 2.35470 0 33 88.00000 2.35470 97.3% - 0s 0 0 2.35470 0 33 88.00000 2.35470 97.3% - 0s 0 0 2.35470 0 33 88.00000 2.35470 97.3% - 0s 0 2 2.40201 0 33 88.00000 2.40201 97.3% - 0s H 40 27 86.0000000 8.02211 90.7% 37.6 0s * 98 67 19 85.0000000 15.64000 81.6% 35.3 0s * 99 64 19 83.0000000 15.64000 81.2% 35.0 0s * 203 124 21 81.0000000 21.80000 73.1% 33.9 0s * 298 162 15 79.0000000 24.35294 69.2% 32.4 0s * 704 291 29 78.0000000 36.38462 53.4% 31.2 0s * 828 307 28 77.0000000 36.38462 52.7% 31.8 0s H 2453 551 75.0000000 45.08333 39.9% 26.7 2s * 3473 687 27 72.0000000 49.55556 31.2% 25.4 2s 6691 847 69.00000 25 110 72.00000 54.75000 24.0% 23.5 5s Explored 13959 nodes (298663 simplex iterations) in 8.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.200000000000e+01, best bound 7.200000000000e+01, gap 0.0%