Build (method = -2) #dp: 240 Step-3' Graph: 64 vertices and 185 arcs (0.00s) Step-4' Graph: 23 vertices and 103 arcs (0.00s) #V4/#V3 = 0.36 #A4/#A3 = 0.56 Ready! (0.00s) Optimize a model with 43 rows, 104 columns and 270 nonzeros Presolve removed 12 rows and 14 columns Presolve time: 0.00s Presolved: 31 rows, 90 columns, 226 nonzeros Variable types: 0 continuous, 90 integer (4 binary) Found heuristic solution: objective 1678.0000000 Found heuristic solution: objective 1438.0000000 Optimize a model with 31 rows, 90 columns and 226 nonzeros Presolved: 31 rows, 90 columns, 226 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.200e+02 Factor NZ : 3.360e+02 Factor Ops : 4.240e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.15582520e+04 -1.19845381e+04 2.34e+04 1.38e-01 5.76e+02 0s 1 3.58779951e+03 -4.82204428e+03 2.90e+03 3.33e-16 8.91e+01 0s 2 1.69034819e+03 -8.61268053e+01 2.30e+02 3.11e-15 1.12e+01 0s 3 1.28605064e+03 8.52680912e+02 5.13e+00 5.55e-16 2.31e+00 0s 4 1.10766904e+03 1.02266242e+03 1.03e+00 1.16e-16 4.52e-01 0s 5 1.07034139e+03 1.05433816e+03 1.74e-01 2.22e-16 8.50e-02 0s 6 1.06413506e+03 1.06376947e+03 8.10e-04 4.44e-16 1.94e-03 0s 7 1.06400000e+03 1.06400000e+03 2.09e-08 2.27e-16 2.36e-08 0s 8 1.06400000e+03 1.06400000e+03 1.14e-12 3.33e-16 2.36e-11 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.06400000e+03 Root relaxation: objective 1.064000e+03, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1064.0000000 1064.00000 0.0% - 0s Explored 0 nodes (30 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.064000000000e+03, best bound 1.064000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1064 Solution: 20 x [1, 17] 7 x [2, 16] 12 x [2, 17] 1 x [2, 18] 142 x [2, 20] 32 x [3, 16] 155 x [3, 19] 128 x [4] 36 x [4, 14] 23 x [4, 15] 21 x [5, 12] 18 x [5, 13] 47 x [6, 11] 122 x [6, 12] 37 x [7, 10] 64 x [7, 11] 89 x [8, 9] 43 x [8, 10] 67 x [9, 13]