Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:27:59 2012 Optimize a model with 457 rows, 259 columns and 1399 nonzeros Presolve time: 0.00s Presolved: 457 rows, 259 columns, 1399 nonzeros Variable types: 0 continuous, 259 integer (259 binary) Found heuristic solution: objective 117.0000000 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 31 117.00000 0.00000 100% - 0s H 0 0 114.0000000 0.00000 100% - 0s H 0 0 107.0000000 0.00000 100% - 0s 0 0 0.79263 0 33 107.00000 0.79263 99.3% - 0s H 0 0 106.0000000 0.79263 99.3% - 0s H 0 0 104.0000000 0.79263 99.2% - 0s 0 0 0.79263 0 33 104.00000 0.79263 99.2% - 0s 0 0 0.81106 0 33 104.00000 0.81106 99.2% - 0s 0 0 0.81106 0 33 104.00000 0.81106 99.2% - 0s 0 0 0.81106 0 33 104.00000 0.81106 99.2% - 0s 0 0 0.81106 0 33 104.00000 0.81106 99.2% - 0s 0 2 0.86700 0 33 104.00000 0.86700 99.2% - 0s * 326 213 15 101.0000000 24.99524 75.3% 42.0 0s * 328 211 16 98.0000000 24.99524 74.5% 41.9 0s H 602 332 97.0000000 33.28571 65.7% 37.4 0s * 851 399 35 91.0000000 33.28571 63.4% 38.3 1s H 1978 578 88.0000000 44.20000 49.8% 33.9 2s H 2919 816 87.0000000 48.68182 44.0% 31.8 3s 4481 1159 82.80000 24 138 87.00000 52.21053 40.0% 29.9 5s 10578 1983 66.85714 23 133 87.00000 61.20000 29.7% 26.9 10s 17831 2564 78.47368 25 139 87.00000 66.17647 23.9% 25.4 15s 25823 2674 85.46667 29 137 87.00000 69.44444 20.2% 24.4 20s 34284 2290 cutoff 28 87.00000 72.31579 16.9% 23.6 25s 42572 1445 81.05263 25 139 87.00000 75.00000 13.8% 23.0 30s Explored 48011 nodes (1082486 simplex iterations) in 32.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.700000000000e+01, best bound 8.700000000000e+01, gap 0.0%