Build (method = -2) #dp: 162 Step-3' Graph: 21 vertices and 76 arcs (0.00s) Step-4' Graph: 10 vertices and 54 arcs (0.00s) #V4/#V3 = 0.48 #A4/#A3 = 0.71 Ready! (0.00s) Optimize a model with 30 rows, 55 columns and 151 nonzeros Presolve removed 14 rows and 16 columns Presolve time: 0.00s Presolved: 16 rows, 39 columns, 106 nonzeros Variable types: 0 continuous, 39 integer (0 binary) Found heuristic solution: objective 1921.0000000 Found heuristic solution: objective 1174.0000000 Optimize a model with 16 rows, 39 columns and 106 nonzeros Presolved: 16 rows, 39 columns, 106 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.900e+01 Factor NZ : 1.360e+02 Factor Ops : 1.496e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.94242015e+03 -3.41297640e+03 3.00e+03 2.22e-16 2.09e+02 0s 1 1.85959555e+03 -2.97332094e+02 2.95e+02 4.44e-16 3.24e+01 0s 2 1.32308275e+03 9.37156746e+02 2.24e-01 8.88e-16 4.44e+00 0s 3 1.14055161e+03 1.07929690e+03 1.42e-02 6.11e-16 7.04e-01 0s 4 1.12742586e+03 1.11684210e+03 1.77e-03 6.12e-16 1.22e-01 0s 5 1.12385519e+03 1.12335131e+03 5.53e-05 5.00e-16 5.79e-03 0s 6 1.12366672e+03 1.12366664e+03 1.56e-08 5.93e-16 8.59e-07 0s 7 1.12366667e+03 1.12366667e+03 1.14e-13 6.66e-16 8.69e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.12366667e+03 Root relaxation: objective 1.123667e+03, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1123.66667 0 5 1174.00000 1123.66667 4.29% - 0s H 0 0 1124.0000000 1123.66667 0.03% - 0s Explored 0 nodes (11 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.124000000000e+03, best bound 1.124000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1124 Solution: 122 x [17] 72 x [10] 77 x [16] 77 x [15, 16] 106 x [14, 19] 6 x [14, 18] 4 x [1, 14] 4 x [5, 11] 173 x [4, 11] 130 x [1, 9] 5 x [5, 6] 96 x [6, 8] 55 x [3, 5] 25 x [13, 20] 7 x [5, 20] 18 x [18, 20] 118 x [2, 7] 5 x [7, 7] 22 x [1, 1, 18] 1 x [1, 12] 1 x [1, 1, 12]