Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:30:49 2012 Optimize a model with 425 rows, 305 columns and 1365 nonzeros Presolve time: 0.00s Presolved: 425 rows, 305 columns, 1365 nonzeros Variable types: 0 continuous, 305 integer (305 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 140 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 93 89.00000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.63439 0 96 65.00000 0.63439 99.0% - 0s H 0 0 61.0000000 0.63439 99.0% - 0s 0 0 0.73118 0 95 61.00000 0.73118 98.8% - 0s 0 0 0.84209 0 98 61.00000 0.84209 98.6% - 0s 0 0 0.85344 0 99 61.00000 0.85344 98.6% - 0s 0 0 0.85344 0 99 61.00000 0.85344 98.6% - 0s 0 2 0.85859 0 99 61.00000 0.85859 98.6% - 0s * 46 46 28 46.0000000 4.24373 90.8% 26.1 0s * 48 42 30 45.0000000 4.24373 90.6% 25.2 0s H 81 69 44.0000000 4.31024 90.2% 25.1 0s * 93 69 31 43.0000000 4.31024 90.0% 23.3 0s * 633 351 27 41.0000000 13.69231 66.6% 25.2 1s * 972 371 31 40.0000000 15.60000 61.0% 25.1 1s 4083 544 38.50000 24 145 40.00000 27.55172 31.1% 21.6 5s 10189 254 cutoff 26 40.00000 33.50000 16.2% 19.4 10s Cutting planes: Gomory: 1 Mod-K: 3 Explored 11294 nodes (214756 simplex iterations) in 10.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%