Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:48:25 2012 Optimize a model with 373 rows, 268 columns and 1198 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 373 rows, 267 columns, 1197 nonzeros Variable types: 0 continuous, 267 integer (266 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 0.000000e+00, 131 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 80 72.00000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.51385 0 81 60.00000 0.51385 99.1% - 0s H 0 0 51.0000000 0.51385 99.0% - 0s 0 0 1.13434 0 82 51.00000 1.13434 97.8% - 0s 0 0 1.72426 0 84 51.00000 1.72426 96.6% - 0s H 0 0 48.0000000 1.72426 96.4% - 0s 0 0 1.73877 0 84 48.00000 1.73877 96.4% - 0s 0 0 1.73877 0 84 48.00000 1.73877 96.4% - 0s 0 2 1.73915 0 84 48.00000 1.73915 96.4% - 0s * 41 38 24 47.0000000 4.36303 90.7% 34.5 0s * 72 52 19 40.0000000 4.46441 88.8% 34.7 0s * 299 206 15 39.0000000 10.63355 72.7% 34.8 0s * 317 202 21 37.0000000 10.63355 71.3% 33.6 0s * 573 274 15 34.0000000 13.61141 60.0% 32.5 0s Explored 2564 nodes (69838 simplex iterations) in 2.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%