Gurobi 5.6.3 (linux64) logging started Wed Oct 8 01:37:16 2014 Optimize a model with 34596 rows, 34411 columns and 137085 nonzeros Presolve time: 0.96s Presolved: 34596 rows, 34411 columns, 137085 nonzeros Variable types: 1 continuous, 34410 integer (34410 binary) Found heuristic solution: objective 0.9817158 Found heuristic solution: objective 0.9715024 Found heuristic solution: objective 0.9645998 Root relaxation: objective 9.003599e-02, 8296 iterations, 2.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09004 0 1645 0.96460 0.09004 90.7% - 4s H 0 0 0.1522983 0.09004 40.9% - 10s 0 0 0.09526 0 1181 0.15230 0.09526 37.5% - 12s 0 0 0.09526 0 1194 0.15230 0.09526 37.5% - 13s 0 0 0.09995 0 1128 0.15230 0.09995 34.4% - 13s 0 0 0.10665 0 1067 0.15230 0.10665 30.0% - 13s 0 0 0.10738 0 1090 0.15230 0.10738 29.5% - 14s 0 0 0.10851 0 1194 0.15230 0.10851 28.8% - 14s 0 0 0.10858 0 1147 0.15230 0.10858 28.7% - 14s H 0 0 0.1512327 0.10858 28.2% - 14s 0 0 0.10888 0 1095 0.15123 0.10888 28.0% - 14s H 0 0 0.1491013 0.10888 27.0% - 14s 0 0 0.11059 0 1074 0.14910 0.11059 25.8% - 14s 0 0 0.11110 0 1057 0.14910 0.11110 25.5% - 14s 0 0 0.11115 0 1120 0.14910 0.11115 25.5% - 14s 0 0 0.11115 0 1049 0.14910 0.11115 25.5% - 14s H 0 0 0.1484438 0.11115 25.1% - 15s 0 2 0.11331 0 970 0.14844 0.11331 23.7% - 15s H 27 27 0.1469443 0.11383 22.5% 320 16s * 49 49 30 0.1455602 0.11383 21.8% 215 16s * 54 44 33 0.1454046 0.11383 21.7% 196 16s * 121 81 14 0.1433065 0.11446 20.1% 186 17s * 122 77 14 0.1431339 0.11446 20.0% 184 17s * 131 74 10 0.1427115 0.11489 19.5% 185 17s Cutting planes: Gomory: 6 MIR: 87 Zero half: 2 Explored 239 nodes (67119 simplex iterations) in 18.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.427115245812e-01, best bound 1.427115245812e-01, gap 0.0%