Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:51:35 2012 Optimize a model with 427 rows, 275 columns and 1340 nonzeros Presolve time: 0.00s Presolved: 427 rows, 275 columns, 1340 nonzeros Variable types: 0 continuous, 275 integer (275 binary) Found heuristic solution: objective 98.0000000 Root relaxation: objective 0.000000e+00, 103 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 62 98.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 0 0.57407 0 63 84.00000 0.57407 99.3% - 0s H 0 0 78.0000000 0.57407 99.3% - 0s 0 0 1.15476 0 65 78.00000 1.15476 98.5% - 0s 0 0 1.30291 0 65 78.00000 1.30291 98.3% - 0s 0 0 1.33774 0 65 78.00000 1.33774 98.3% - 0s 0 0 1.37566 0 67 78.00000 1.37566 98.2% - 0s 0 0 1.37566 0 65 78.00000 1.37566 98.2% - 0s 0 0 1.39547 0 66 78.00000 1.39547 98.2% - 0s 0 0 1.39610 0 66 78.00000 1.39610 98.2% - 0s 0 2 1.46623 0 66 78.00000 1.46623 98.1% - 0s * 47 47 29 74.0000000 4.75768 93.6% 33.4 0s * 90 64 26 64.0000000 4.85206 92.4% 31.1 0s * 128 90 20 63.0000000 6.85354 89.1% 30.8 0s H 187 130 60.0000000 6.96296 88.4% 32.9 0s * 301 208 17 58.0000000 12.71429 78.1% 33.4 0s * 1122 378 29 57.0000000 24.10000 57.7% 31.2 1s H 2326 626 56.0000000 31.15789 44.4% 28.5 2s H 2355 609 54.0000000 31.25000 42.1% 28.4 2s H 2466 602 53.0000000 31.95652 39.7% 28.2 2s * 3657 743 24 52.0000000 35.08000 32.5% 27.4 4s 4413 804 45.56000 19 129 52.00000 36.00000 30.8% 27.2 5s 10502 535 50.11765 20 136 52.00000 43.64000 16.1% 24.4 10s Explored 12133 nodes (287210 simplex iterations) in 11.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.200000000000e+01, best bound 5.200000000000e+01, gap 0.0%