Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:00:59 2012 Optimize a model with 311 rows, 211 columns and 986 nonzeros Presolve time: 0.00s Presolved: 311 rows, 211 columns, 986 nonzeros Variable types: 0 continuous, 211 integer (211 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 0.000000e+00, 91 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 55 68.00000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.57628 0 56 56.00000 0.57628 99.0% - 0s 0 0 1.01420 0 58 56.00000 1.01420 98.2% - 0s 0 0 1.16615 0 60 56.00000 1.16615 97.9% - 0s 0 0 1.20253 0 59 56.00000 1.20253 97.9% - 0s H 0 0 55.0000000 1.20253 97.8% - 0s H 0 0 53.0000000 1.20253 97.7% - 0s 0 0 1.21225 0 61 53.00000 1.21225 97.7% - 0s 0 2 1.25208 0 61 53.00000 1.25208 97.6% - 0s H 27 27 49.0000000 5.16400 89.5% 30.6 0s H 72 63 46.0000000 5.24032 88.6% 27.7 0s * 111 78 21 40.0000000 7.75125 80.6% 26.7 0s * 172 115 22 38.0000000 7.77545 79.5% 28.3 0s * 759 341 23 37.0000000 15.44803 58.2% 27.1 0s * 944 328 26 36.0000000 15.66667 56.5% 26.6 0s * 1202 272 23 35.0000000 19.06522 45.5% 25.5 1s H 2560 189 34.0000000 26.00000 23.5% 23.1 1s * 2602 157 23 33.0000000 26.04167 21.1% 23.0 2s Explored 3006 nodes (68015 simplex iterations) in 2.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%