Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:57:25 2012 Optimize a model with 700 rows, 168 columns and 1400 nonzeros Presolve removed 140 rows and 0 columns Presolve time: 0.00s Presolved: 560 rows, 168 columns, 1221 nonzeros Variable types: 0 continuous, 168 integer (168 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 6.733333e+01, 340 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 67.33333 0 150 47.00000 67.33333 43.3% - 0s H 0 0 50.0000000 67.33333 34.7% - 0s 0 0 66.08439 0 164 50.00000 66.08439 32.2% - 0s H 0 0 51.0000000 66.08439 29.6% - 0s 0 0 65.41546 0 163 51.00000 65.41546 28.3% - 0s 0 0 64.88199 0 164 51.00000 64.88199 27.2% - 0s H 0 0 52.0000000 64.88199 24.8% - 0s 0 0 64.54392 0 164 52.00000 64.54392 24.1% - 0s 0 0 64.04871 0 164 52.00000 64.04871 23.2% - 0s 0 0 63.71164 0 166 52.00000 63.71164 22.5% - 0s 0 0 63.49587 0 167 52.00000 63.49587 22.1% - 0s H 0 0 53.0000000 63.49587 19.8% - 0s 0 0 63.38499 0 167 53.00000 63.38499 19.6% - 0s 0 0 63.32346 0 168 53.00000 63.32346 19.5% - 0s 0 0 63.24445 0 168 53.00000 63.24445 19.3% - 0s 0 0 63.13441 0 167 53.00000 63.13441 19.1% - 0s 0 0 63.13415 0 167 53.00000 63.13415 19.1% - 0s 0 0 63.13415 0 166 53.00000 63.13415 19.1% - 0s 0 2 63.13415 0 166 53.00000 63.13415 19.1% - 0s * 24 22 16 54.0000000 63.13415 16.9% 42.8 0s H 385 157 55.0000000 61.30560 11.5% 41.0 0s H 494 163 56.0000000 61.04170 9.00% 41.1 0s 739 256 58.71784 23 138 56.00000 60.73062 8.45% 48.6 5s Cutting planes: Gomory: 3 Zero half: 83 Explored 3989 nodes (133621 simplex iterations) in 9.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.600000000000e+01, best bound 5.600000000000e+01, gap 0.0%