Build (method = -2) #dp: 255 Step-3' Graph: 61 vertices and 176 arcs (0.00s) Step-4' Graph: 28 vertices and 110 arcs (0.00s) #V4/#V3 = 0.46 #A4/#A3 = 0.62 Ready! (0.00s) Optimize a model with 48 rows, 111 columns and 281 nonzeros Presolve removed 17 rows and 22 columns Presolve time: 0.00s Presolved: 31 rows, 89 columns, 230 nonzeros Variable types: 0 continuous, 89 integer (0 binary) Found heuristic solution: objective 1521.0000000 Found heuristic solution: objective 1397.0000000 Optimize a model with 31 rows, 89 columns and 230 nonzeros Presolved: 31 rows, 89 columns, 230 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.550e+02 Factor NZ : 3.760e+02 Factor Ops : 5.592e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.43472044e+03 -1.57329428e+04 1.05e+04 2.22e-16 3.77e+02 0s 1 2.18882972e+03 -5.13370654e+03 1.27e+03 1.17e-15 6.40e+01 0s 2 1.48418945e+03 -5.92462785e+02 1.54e+01 6.66e-16 1.13e+01 0s 3 1.27879137e+03 5.74651366e+02 6.52e-02 6.52e-16 3.79e+00 0s 4 1.16790808e+03 9.47796835e+02 9.09e-04 6.11e-16 1.18e+00 0s 5 1.14852711e+03 1.12422010e+03 4.01e-04 9.96e-16 1.31e-01 0s 6 1.14509714e+03 1.14488022e+03 3.35e-06 7.43e-16 1.17e-03 0s 7 1.14500000e+03 1.14500000e+03 1.16e-11 6.26e-16 3.99e-09 0s 8 1.14500000e+03 1.14500000e+03 2.15e-12 1.04e-15 3.99e-12 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.14500000e+03 Root relaxation: objective 1.145000e+03, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1145.0000000 1145.00000 0.0% - 0s Explored 0 nodes (55 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.145000000000e+03, best bound 1.145000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 1145 Solution: 117 x [1] 139 x [2] 104 x [3] 1 x [4] 9 x [4, 18] 15 x [4, 20] 98 x [5, 16] 42 x [6, 16] 16 x [6, 17, 18] 3 x [6, 18] 37 x [6, 20] 118 x [7, 18, 19] 41 x [8] 99 x [8, 14] 29 x [9] 50 x [9, 13] 27 x [9, 15] 81 x [10, 15] 7 x [10, 15, 19] 96 x [11, 12] 16 x [11, 14]