Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:04:25 2012 Optimize a model with 365 rows, 239 columns and 1149 nonzeros Presolve time: 0.00s Presolved: 365 rows, 239 columns, 1149 nonzeros Variable types: 0 continuous, 239 integer (239 binary) Found heuristic solution: objective 79.0000000 Root relaxation: objective 0.000000e+00, 92 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 57 79.00000 0.00000 100% - 0s 0 0 0.91431 0 63 79.00000 0.91431 98.8% - 0s H 0 0 71.0000000 0.91431 98.7% - 0s H 0 0 66.0000000 0.91431 98.6% - 0s 0 0 0.91657 0 60 66.00000 0.91657 98.6% - 0s 0 0 0.95795 0 74 66.00000 0.95795 98.5% - 0s 0 0 1.00000 0 58 66.00000 1.00000 98.5% - 0s 0 0 1.10253 0 81 66.00000 1.10253 98.3% - 0s 0 0 1.13551 0 73 66.00000 1.13551 98.3% - 0s 0 2 1.15572 0 73 66.00000 1.15572 98.2% - 0s H 32 32 61.0000000 5.94444 90.3% 31.5 0s * 40 40 22 53.0000000 5.94444 88.8% 30.1 0s * 271 198 20 52.0000000 14.18563 72.7% 29.2 0s * 554 310 17 51.0000000 18.76190 63.2% 25.1 0s * 612 339 22 49.0000000 19.13953 60.9% 24.5 0s * 2134 472 31 48.0000000 28.00000 41.7% 26.3 1s H 2699 510 47.0000000 30.66667 34.8% 26.3 2s 5617 491 41.18182 24 116 47.00000 35.56098 24.3% 25.1 5s Explored 8512 nodes (203184 simplex iterations) in 7.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%