Build (method = -2) #dp: 15894 Step-3' Graph: 201 vertices and 696 arcs (0.09s) Step-4' Graph: 6 vertices and 306 arcs (0.09s) #V4/#V3 = 0.03 #A4/#A3 = 0.44 Ready! (0.09s) Optimize a model with 106 rows, 307 columns and 915 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 104 rows, 305 columns, 911 nonzeros Variable types: 0 continuous, 305 integer (0 binary) Found heuristic solution: objective 4919.0000000 Found heuristic solution: objective 4875.0000000 Optimize a model with 104 rows, 305 columns and 911 nonzeros Presolved: 104 rows, 305 columns, 911 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.070e+02 Factor NZ : 8.170e+02 Factor Ops : 1.260e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.14187457e+04 -1.40219358e+04 2.11e+02 1.11e-16 8.15e+01 0s 1 3.63051140e+03 -5.03210389e+03 1.27e+01 5.55e-16 1.41e+01 0s 2 1.99474058e+03 9.08118862e+02 1.45e-02 3.11e-15 1.54e+00 0s 3 1.65612359e+03 1.48500137e+03 3.25e-04 6.38e-16 2.41e-01 0s 4 1.64117592e+03 1.63418246e+03 1.65e-05 4.44e-16 9.85e-03 0s 5 1.64000444e+03 1.63999465e+03 6.20e-08 3.33e-16 1.38e-05 0s 6 1.64000000e+03 1.64000000e+03 3.50e-13 3.33e-16 1.38e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.64000000e+03 Root relaxation: objective 1.640000e+03, 262 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1640.0000000 1640.00000 0.0% - 0s Explored 0 nodes (262 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.640000000000e+03, best bound 1.640000000000e+03, gap 0.0% Preprocessing time: 0.10 seconds Gurobi run time: 0.01 seconds Total run time: 0.11 seconds Objective: 1640 Solution: 2 x [10, 52, 56] 43 x [10, 22, 82] 4 x [2, 58, 80] 75 x [8, 67, 80] 10 x [42, 63, 65] 1 x [13, 19, 63] 5 x [66, 83, 92] 85 x [13, 77, 92] 61 x [68, 72, 88] 1 x [68, 69, 100] 40 x [33, 78, 84] 3 x [54, 61, 84] 5 x [31, 42, 73] 18 x [45, 83, 85] 79 x [16, 47, 89] 9 x [25, 75, 96] 9 x [15, 50, 96] 30 x [2, 28, 73] 23 x [46, 55, 86] 2 x [22, 47, 79] 36 x [14, 26, 56] 53 x [17, 23, 30] 35 x [19, 27, 61] 73 x [11, 29, 60] 3 x [14, 79, 98] 67 x [39, 90, 100] 88 x [15, 51, 62] 4 x [3, 12, 51] 48 x [3, 12, 76] 1 x [46, 97, 99] 26 x [20, 37, 99] 29 x [4, 6, 64] 57 x [1, 74, 95] 54 x [21, 69, 91] 90 x [18, 53, 57] 35 x [34, 49, 59] 7 x [18, 44, 79] 77 x [48, 70, 98] 83 x [41, 65, 71] 60 x [7, 9, 54] 3 x [9, 16, 65] 27 x [5, 38, 87] 1 x [17, 32, 87] 6 x [41, 53, 97] 2 x [29, 74, 85] 69 x [32, 36, 43] 6 x [11, 35, 36] 14 x [35, 75, 81] 3 x [34, 40, 94] 6 x [30, 77, 79] 1 x [18, 30, 65] 2 x [55, 85, 90] 1 x [50, 85, 98] 1 x [16, 50, 85] 66 x [24, 40, 93] 1 x [4, 24, 31]