Hello All,

I am solving a problem with Reduced LP of the order 5879207 columns. I am using Barrier technique with Primal Crossover. Once the crossover has started, the problem goes into degeneracy and does not solve even in 1:30 hrs. How can I come out of degeneracy without getting stuck? The LP works fine for smaller problems (till 40 lakhs). I tried solving with Primal Simplex as well as Dual Simplex, still no luck. I have 2 queries: 1. How can the situation of degeneracy avoided? 2. If degeneracy occurs, what is the efficient way to come out of it? I am attaching the log below:

Presolve has eliminated 0 rows and 240 columns... Presolve has eliminated 2060 rows and 2373257 columns... Aggregator has done 6238 substitutions... Presolve has eliminated 3636 rows and 2376413 columns... Aggregator has done 7833 substitutions... Presolve has eliminated 3637 rows and 2378521 columns... Aggregator has done 7833 substitutions... Tried aggregator 1 time. LP Presolve eliminated 3637 rows and 2378522 columns. Aggregator did 7833 substitutions. Reduced LP has 6480 rows, 5879207 columns, and 72082857 nonzeros. Presolve time = 44.44 sec. Parallel mode: using up to 16 threads for barrier. Number of nonzeros in lower triangle of A*A' = 2789007 Using Nested Dissection ordering Total time for automatic ordering = 22.42 sec. Summary statistics for Cholesky factor: Threads = 16 Rows in Factor = 6480 Integer space required = 229199 Total non-zeros in factor = 8209350 Total FP ops to factor = 17092576332 Itn Primal Obj Dual Obj Prim Inf Upper Inf Dual Inf
0 5.6255808e+010 -5.9923715e+009 7.07e+008 1.12e+008 1.21e+005 1 1.0458191e+010 -5.1199514e+009 1.31e+008 2.07e+007 2.82e+004 2 6.7986914e+009 -4.3465186e+009 8.54e+007 1.35e+007 1.39e+004 3 3.2217462e+009 -2.8256688e+009 4.05e+007 6.39e+006 5.06e+003 4 1.1757445e+009 -2.1914900e+009 1.48e+007 2.33e+006 2.90e+003 5 5.4961872e+008 -1.5970363e+009 6.89e+006 1.09e+006 1.88e+003 6 3.3649139e+008 -1.5294382e+009 4.22e+006 6.65e+005 1.73e+003 7 2.0003803e+008 -1.2896831e+009 2.50e+006 3.95e+005 1.38e+003 8 1.0744972e+008 -1.0319230e+009 1.34e+006 2.12e+005 1.00e+003 9 6.8903420e+007 -1.0003303e+009 8.60e+005 1.36e+005 9.61e+002 10 3.9705633e+007 -9.6695909e+008 4.94e+005 7.79e+004 9.20e+002 11 2.6207094e+007 -7.5573079e+008 3.25e+005 5.12e+004 6.47e+002 12 1.7789688e+007 -7.0949917e+008 2.19e+005 3.46e+004 5.87e+002 13 1.4564711e+007 -6.4530915e+008 1.79e+005 2.82e+004 4.87e+002 14 9.9028063e+006 -5.8613623e+008 1.20e+005 1.90e+004 4.27e+002 15 7.2657354e+006 -5.4808155e+008 8.73e+004 1.38e+004 3.74e+002 16 5.9410009e+006 -5.0340942e+008 7.06e+004 1.11e+004 3.06e+002 17 5.3573266e+006 -4.8247006e+008 6.32e+004 9.98e+003 2.77e+002 18 4.8459021e+006 -4.2343318e+008 5.69e+004 8.98e+003 2.24e+002 19 4.6760479e+006 -4.1426240e+008 5.47e+004 8.64e+003 2.11e+002 20 4.6661721e+006 -4.1208374e+008 5.46e+004 8.62e+003 2.07e+002 21 4.6193382e+006 -4.0577419e+008 5.40e+004 8.53e+003 1.98e+002 22 4.5324513e+006 -3.9989132e+008 5.29e+004 8.35e+003 1.92e+002 23 4.4589131e+006 -3.7976125e+008 5.20e+004 8.21e+003 1.72e+002 24 3.8351537e+006 -3.5288220e+008 4.42e+004 6.98e+003 1.47e+002 25 3.4940650e+006 -3.4541073e+008 4.00e+004 6.31e+003 1.39e+002 26 2.6387873e+006 -3.3056136e+008 2.94e+004 4.64e+003 1.27e+002 27 2.1543028e+006 -3.2480996e+008 2.33e+004 3.68e+003 1.21e+002 28 1.6537915e+006 -3.1459372e+008 1.71e+004 2.70e+003 1.14e+002 29 1.3286269e+006 -3.0183557e+008 1.32e+004 2.08e+003 1.06e+002 30 1.3147903e+006 -3.0148394e+008 1.30e+004 2.06e+003 1.06e+002 31 1.0737271e+006 -2.5588542e+008 1.02e+004 1.60e+003 8.31e+001 32 1.0031452e+006 -2.3833150e+008 9.28e+003 1.47e+003 7.03e+001 33 9.7764280e+005 -2.2341294e+008 8.96e+003 1.41e+003 5.90e+001 34 9.3342479e+005 -2.1441093e+008 8.41e+003 1.33e+003 5.16e+001 35 8.0623569e+005 -1.9603280e+008 6.85e+003 1.08e+003 4.13e+001 36 7.2113713e+005 -1.8604874e+008 5.80e+003 9.15e+002 3.53e+001 37 6.4279083e+005 -1.7817549e+008 4.82e+003 7.61e+002 3.09e+001 38 5.8421378e+005 -1.6704624e+008 4.12e+003 6.51e+002 2.66e+001 39 5.1383133e+005 -1.5118668e+008 3.30e+003 5.20e+002 2.13e+001 40 4.6667152e+005 -1.4635706e+008 2.71e+003 4.28e+002 1.94e+001 41 4.0973663e+005 -1.2437910e+008 2.04e+003 3.22e+002 1.31e+001 42 3.7158223e+005 -1.0359626e+008 1.59e+003 2.51e+002 8.78e+000 43 3.6074419e+005 -9.8098855e+007 1.42e+003 2.25e+002 7.77e+000 44 3.7665384e+005 -9.4401300e+007 1.13e+003 1.78e+002 7.19e+000 45 5.2071651e+005 -9.2167448e+007 1.03e+003 1.63e+002 6.71e+000 46 7.0554961e+005 -9.1081551e+007 9.42e+002 1.49e+002 6.48e+000 47 7.6908063e+005 -8.8547420e+007 9.19e+002 1.45e+002 6.01e+000 48 9.2480396e+005 -8.7899903e+007 8.76e+002 1.38e+002 5.86e+000 49 1.0464194e+006 -8.3251153e+007 8.25e+002 1.30e+002 5.36e+000 50 1.3148256e+006 -8.2127689e+007 7.78e+002 1.23e+002 5.14e+000 51 1.5052913e+006 -8.1128060e+007 7.24e+002 1.14e+002 5.02e+000 52 1.5902564e+006 -7.2659067e+007 6.72e+002 1.06e+002 4.31e+000 53 1.8456331e+006 -7.0299060e+007 6.06e+002 9.56e+001 4.04e+000 54 2.0291787e+006 -6.8991676e+007 5.66e+002 8.94e+001 3.88e+000 55 2.2938247e+006 -6.7604321e+007 5.12e+002 8.08e+001 3.71e+000 56 2.4492556e+006 -6.5944131e+007 4.84e+002 7.64e+001 3.50e+000 57 2.6325703e+006 -6.4931725e+007 4.59e+002 7.25e+001 3.35e+000 58 2.8897164e+006 -6.2970002e+007 3.92e+002 6.19e+001 3.17e+000 59 3.2816447e+006 -6.0585682e+007 3.28e+002 5.18e+001 2.91e+000 60 3.3181562e+006 -5.8198964e+007 2.84e+002 4.48e+001 2.74e+000 61 3.4429204e+006 -5.5524325e+007 2.32e+002 3.66e+001 2.55e+000 62 3.6841841e+006 -5.4178718e+007 2.04e+002 3.22e+001 2.43e+000 63 3.6897428e+006 -5.1402482e+007 1.76e+002 2.78e+001 2.26e+000 64 3.7700529e+006 -4.8686131e+007 1.57e+002 2.48e+001 2.09e+000 65 3.9170663e+006 -4.7518433e+007 1.45e+002 2.29e+001 2.00e+000 66 3.8064862e+006 -4.4528419e+007 1.06e+002 1.67e+001 1.83e+000 67 3.0613741e+006 -3.3543314e+007 6.63e+001 1.05e+001 1.33e+000 68 2.8503972e+006 -2.9238395e+007 5.67e+001 8.96e+000 1.14e+000 69 2.8882517e+006 -2.8434296e+007 4.76e+001 7.52e+000 1.10e+000 70 2.4046737e+006 -2.4068241e+007 3.36e+001 5.30e+000 9.12e-001 71 1.9390147e+006 -2.0587759e+007 2.31e+001 3.64e+000 7.71e-001 72 1.7679182e+006 -1.8366679e+007 1.91e+001 3.02e+000 6.81e-001 73 1.4404071e+006 -1.4985477e+007 1.25e+001 1.97e+000 5.47e-001 74 1.2091000e+006 -1.2714469e+007 8.59e+000 1.36e+000 4.58e-001 75 1.0943286e+006 -1.0906087e+007 5.82e+000 9.19e-001 3.86e-001 76 8.5940390e+005 -9.9864316e+006 3.42e+000 5.40e-001 3.52e-001 77 7.5073840e+005 -5.3241021e+006 2.90e+000 4.58e-001 1.92e-001 78 5.0458742e+005 -2.4838763e+006 1.73e+000 2.73e-001 9.47e-002 79 4.1593835e+005 -1.6004739e+006 1.31e+000 2.07e-001 6.47e-002 80 3.6602046e+005 -1.4443829e+006 1.08e+000 1.70e-001 5.98e-002 81 3.1485467e+005 -9.1590182e+005 8.40e-001 1.33e-001 4.13e-002 82 3.1462566e+005 -9.0674178e+005 8.39e-001 1.32e-001 4.16e-002 83 2.8505687e+005 -7.0498765e+005 7.03e-001 1.11e-001 3.46e-002 84 2.5490178e+005 -5.1142762e+005 5.64e-001 8.91e-002 2.81e-002 85 2.5481155e+005 -5.1033865e+005 5.64e-001 8.90e-002 2.84e-002 86 2.4676141e+005 -3.7910006e+005 5.27e-001 8.32e-002 2.38e-002 87 2.3601020e+005 -3.0614556e+005 4.79e-001 7.56e-002 2.13e-002 88 2.2696506e+005 -2.6103391e+005 4.38e-001 6.92e-002 1.99e-002 89 2.1049159e+005 -1.9016434e+005 3.65e-001 5.76e-002 1.75e-002 90 2.0134301e+005 -1.7117801e+005 3.25e-001 5.13e-002 1.73e-002 91 1.9561152e+005 -1.2813874e+005 3.00e-001 4.73e-002 1.55e-002 92 1.8790266e+005 -9.3092391e+004 2.67e-001 4.21e-002 1.40e-002 93 1.8279657e+005 -6.5151315e+004 2.45e-001 3.86e-002 1.29e-002 94 1.7604261e+005 -4.8286854e+004 2.16e-001 3.41e-002 1.26e-002 95 1.7538769e+005 -2.2119411e+004 2.13e-001 3.36e-002 1.15e-002 96 1.7489024e+005 -9.4658759e+003 2.11e-001 3.33e-002 1.12e-002 97 1.6908503e+005 3.9384343e+003 1.87e-001 2.96e-002 1.07e-002 98 1.6895684e+005 5.4748362e+003 1.87e-001 2.95e-002 1.10e-002 99 1.6840844e+005 1.6920085e+004 1.85e-001 2.91e-002 1.08e-002 100 1.6586445e+005 2.5635542e+004 1.74e-001 2.75e-002 1.03e-002 101 1.6289656e+005 3.2709670e+004 1.63e-001 2.57e-002 1.03e-002 102 1.5826977e+005 4.3274428e+004 1.44e-001 2.28e-002 9.72e-003 103 1.5445160e+005 4.8993564e+004 1.29e-001 2.04e-002 9.84e-003 104 1.5192759e+005 5.4295396e+004 1.19e-001 1.88e-002 9.57e-003 105 1.4970712e+005 6.3746211e+004 1.10e-001 1.74e-002 9.14e-003 106 1.4860055e+005 6.6024305e+004 1.06e-001 1.68e-002 9.30e-003 107 1.4641800e+005 7.4320384e+004 9.77e-002 1.54e-002 8.72e-003 108 1.4622862e+005 7.6166484e+004 9.69e-002 1.53e-002 8.78e-003 109 1.4151055e+005 8.0886163e+004 7.89e-002 1.25e-002 8.38e-003 110 1.4128254e+005 8.6358150e+004 7.80e-002 1.23e-002 8.27e-003 111 1.4128112e+005 8.8790354e+004 7.80e-002 1.23e-002 8.21e-003 112 1.4065280e+005 9.0894409e+004 7.57e-002 1.19e-002 8.15e-003 113 1.4065245e+005 9.1045975e+004 7.57e-002 1.19e-002 8.52e-003 114 1.3891371e+005 9.3075222e+004 6.92e-002 1.09e-002 8.44e-003 115 1.3655121e+005 9.6297811e+004 6.05e-002 9.55e-003 8.08e-003 116 1.3574987e+005 9.7710427e+004 5.76e-002 9.09e-003 8.12e-003 117 1.3410216e+005 1.0016025e+005 5.16e-002 8.15e-003 7.87e-003 118 1.3314486e+005 1.0028024e+005 4.81e-002 7.59e-003 8.28e-003 119 1.3195888e+005 1.0076290e+005 4.37e-002 6.90e-003 8.48e-003 120 1.3080453e+005 1.0372697e+005 3.95e-002 6.23e-003 7.93e-003 121 1.3077521e+005 1.0379000e+005 3.94e-002 6.22e-003 8.20e-003 122 1.2955928e+005 1.0499321e+005 3.50e-002 5.52e-003 8.17e-003 123 1.2812358e+005 1.0765335e+005 2.98e-002 4.70e-003 7.24e-003 124 1.2799796e+005 1.0987397e+005 2.93e-002 4.63e-003 6.81e-003 125 1.2799415e+005 1.1008747e+005 2.93e-002 4.63e-003 7.09e-003 126 1.2723137e+005 1.1100078e+005 2.66e-002 4.20e-003 7.31e-003 127 1.2602531e+005 1.1209692e+005 2.23e-002 3.52e-003 7.06e-003 128 1.2538491e+005 1.1311803e+005 2.00e-002 3.16e-003 6.99e-003 129 1.2507739e+005 1.1437081e+005 1.89e-002 2.98e-003 6.62e-003 130 1.2412239e+005 1.1533285e+005 1.55e-002 2.44e-003 6.37e-003 131 1.2316800e+005 1.1620431e+005 1.21e-002 1.90e-003 6.00e-003 132 1.2274892e+005 1.1658785e+005 1.06e-002 1.67e-003 6.08e-003 133 1.2206061e+005 1.1741041e+005 8.10e-003 1.28e-003 5.79e-003 134 1.2167062e+005 1.1818889e+005 6.70e-003 1.06e-003 5.53e-003 135 1.2115062e+005 1.1848444e+005 4.83e-003 7.62e-004 5.42e-003 136 1.2083277e+005 1.1884383e+005 3.69e-003 5.82e-004 5.50e-003 137 1.2073653e+005 1.1896486e+005 3.35e-003 5.28e-004 5.45e-003 138 1.2047254e+005 1.1919233e+005 2.40e-003 3.78e-004 5.37e-003 139 1.2027945e+005 1.1929357e+005 1.71e-003 2.67e-004 5.32e-003 140 1.2014607e+005 1.1944756e+005 1.23e-003 1.92e-004 5.32e-003 141 1.2003508e+005 1.1954898e+005 8.26e-004 1.29e-004 5.19e-003 142 1.2001650e+005 1.1965692e+005 7.63e-004 1.19e-004 5.00e-003 143 1.1996258e+005 1.1973682e+005 5.68e-004 8.86e-005 4.81e-003 144 1.1988234e+005 1.1975236e+005 2.76e-004 4.30e-005 4.90e-003 145 1.1984151e+005 1.1975823e+005 1.29e-004 1.99e-005 5.17e-003 146 1.1983997e+005 1.1975829e+005 1.25e-004 1.93e-005 5.72e-003 147 1.1982680e+005 1.1977530e+005 7.59e-005 1.16e-005 5.27e-003 148 1.1982625e+005 1.1979008e+005 8.18e-005 1.20e-005 5.02e-003 149 1.1982545e+005 1.1979749e+005 8.30e-005 1.18e-005 4.61e-003 150 1.1981773e+005 1.1979824e+005 4.94e-005 6.98e-006 5.09e-003 151 1.1981053e+005 1.1980415e+005 1.69e-005 2.34e-006 4.75e-003 152 1.1981053e+005 1.1980415e+005 2.17e-005 2.74e-006 5.12e-003 153 1.1981036e+005 1.1980563e+005 2.29e-005 2.80e-006 4.59e-003 154 1.1981011e+005 1.1980638e+005 2.33e-005 2.77e-006 4.55e-003 155 1.1980945e+005 1.1980709e+005 2.01e-005 2.32e-006 4.60e-003 Parallel barrier real time = 393.16 sec.

Primal crossover. Primal: Fixing 5816 variables. 5815 PMoves: Infeasibility 2.36747634e-002 Objective 1.19610884e+005 1644 PMoves: Infeasibility 9.54327705e-003 Objective 1.13055528e+005 0 PMoves: Infeasibility 3.14479416e-003 Objective 1.16656660e+005 Primal: Pushed 4185, exchanged 1631. Dual: Fixing 4479 variables. 4478 DMoves: Infeasibility 1.62824849e+000 Objective 1.16656722e+005 Elapsed crossover time = 13.03 sec. (4200 DMoves) Elapsed crossover time = 24.61 sec. (1800 DMoves) Elapsed crossover time = 35.53 sec. (1400 DMoves) Elapsed crossover time = 51.84 sec. (1200 DMoves) 1179 DMoves: Infeasibility 1.61005612e+000 Objective 1.16656715e+005 Elapsed crossover time = 64.64 sec. (600 DMoves) Elapsed crossover time = 92.53 sec. (400 DMoves) Elapsed crossover time = 124.49 sec. (200 DMoves) 0 DMoves: Infeasibility 1.35068335e+000 Objective 1.16657329e+005 Dual: Pushed 2711, exchanged 1724.

Iteration log . . . Iteration: 1 Objective = 116656.667362 Perturbation started. Iteration: 602 Objective = 116656.667278 Elapsed time = 550.73 sec. (1000 iterations). Iteration: 1229 Objective = 116639.403779 Iteration: 1857 Objective = 116623.702910 Iteration: 2446 Objective = 116623.400416 Iteration: 3024 Objective = 116623.081113 Iteration: 3629 Objective = 116623.059461 Iteration: 3997 Objective = 116623.048655 Iteration: 4407 Objective = 116623.035894 Iteration: 4895 Objective = 116623.020255 Iteration: 5292 Objective = 116623.008241 Iteration: 5749 Objective = 116622.993986 Iteration: 6306 Objective = 116622.977008 Iteration: 6747 Objective = 116622.964052 Iteration: 7239 Objective = 116622.949206 Iteration: 7587 Objective = 116622.937252 Iteration: 7980 Objective = 116622.924526 Iteration: 8397 Objective = 116622.911751 Iteration: 8820 Objective = 116622.898790 Iteration: 9247 Objective = 116622.885263 Iteration: 9573 Objective = 116622.874655 Iteration: 9991 Objective = 116622.859957 Iteration: 10372 Objective = 116622.848357 Iteration: 10664 Objective = 116622.837990 Iteration: 11083 Objective = 116622.824149 Iteration: 11460 Objective = 116622.810768 Iteration: 11846 Objective = 116622.795180 Iteration: 12261 Objective = 116622.781136 Iteration: 12652 Objective = 116622.765492 Iteration: 13087 Objective = 116622.748633 Iteration: 13410 Objective = 116622.736145 Iteration: 13736 Objective = 116622.723440 Elapsed time = 561.44 sec. (14000 iterations). Iteration: 14071 Objective = 116622.708691 Iteration: 14429 Objective = 116622.696066 Iteration: 14828 Objective = 116622.681491 Iteration: 15173 Objective = 116622.670176 Iteration: 15569 Objective = 116622.656188 Iteration: 16084 Objective = 116622.637249 Iteration: 16459 Objective = 116622.623814 Iteration: 16886 Objective = 116622.607227 Iteration: 17117 Objective = 116622.596396 Iteration: 17473 Objective = 116622.581740 Iteration: 17824 Objective = 116622.568286 Iteration: 18169 Objective = 116622.553203 Iteration: 18609 Objective = 116622.535085 Iteration: 18969 Objective = 116622.522322 Iteration: 19444 Objective = 116622.504672 Iteration: 19790 Objective = 116622.489282 Iteration: 20201 Objective = 116622.472840 Iteration: 20608 Objective = 116622.457737 Iteration: 20931 Objective = 116622.447199 Iteration: 21250 Objective = 116622.435909 Iteration: 21587 Objective = 116622.422952 Iteration: 21996 Objective = 116622.406617 Iteration: 22314 Objective = 116622.393048 Iteration: 22681 Objective = 116622.375657 Iteration: 23040 Objective = 116622.361111 Iteration: 23493 Objective = 116622.343494 Iteration: 23845 Objective = 116622.329824 Iteration: 24140 Objective = 116622.318369 Iteration: 24533 Objective = 116622.301885 Iteration: 24934 Objective = 116622.284579 Iteration: 25254 Objective = 116622.269989 Iteration: 25570 Objective = 116622.257761 Iteration: 26028 Objective = 116622.237773 Iteration: 26318 Objective = 116622.226006 Iteration: 26683 Objective = 116622.210816 Iteration: 27095 Objective = 116622.192786 Iteration: 27403 Objective = 116622.178525 Iteration: 27758 Objective = 116622.161127 Elapsed time = 571.72 sec. (28000 iterations). Iteration: 28115 Objective = 116622.143597 Iteration: 28507 Objective = 116622.122392 Iteration: 28878 Objective = 116622.099634 Iteration: 29366 Objective = 116622.073318 Iteration: 29819 Objective = 116622.048803 Iteration: 30215 Objective = 116622.029418 Iteration: 30619 Objective = 116622.006104 Iteration: 31023 Objective = 116621.981909 Iteration: 31447 Objective = 116621.954384 Iteration: 31841 Objective = 116621.927906 Iteration: 32140 Objective = 116621.909594 Iteration: 32576 Objective = 116621.884861 Iteration: 32933 Objective = 116621.865225 Iteration: 33287 Objective = 116621.846247 Iteration: 33613 Objective = 116621.827415 Iteration: 33984 Objective = 116621.810093 Iteration: 34409 Objective = 116621.786341 Iteration: 34892 Objective = 116621.757971 Iteration: 35274 Objective = 116621.737535 Iteration: 35520 Objective = 116621.724743 Iteration: 36065 Objective = 116621.691613 Iteration: 36455 Objective = 116621.669401 Iteration: 36845 Objective = 116621.646403 Iteration: 37155 Objective = 116621.623679 Iteration: 37586 Objective = 116621.597828 Iteration: 37952 Objective = 116621.571938 Iteration: 38309 Objective = 116621.547732 Iteration: 38705 Objective = 116621.523297 Iteration: 39009 Objective = 116621.502481 Iteration: 39469 Objective = 116621.474218 Iteration: 39827 Objective = 116621.452082 Iteration: 39995 Objective = 116621.441722 Iteration: 40398 Objective = 116621.417717 Iteration: 40690 Objective = 116621.398416 Iteration: 41139 Objective = 116621.368804 Iteration: 41571 Objective = 116621.343497 Iteration: 41911 Objective = 116621.320379 Elapsed time = 581.73 sec. (42000 iterations). Iteration: 42410 Objective = 116621.289426 Iteration: 42823 Objective = 116621.261586 Iteration: 43214 Objective = 116621.233134 Iteration: 43568 Objective = 116621.207343 Iteration: 43892 Objective = 116621.184798 Iteration: 44245 Objective = 116621.160651 Iteration: 44608 Objective = 116621.137738 Iteration: 44993 Objective = 116621.112584 Iteration: 45354 Objective = 116621.093171 Iteration: 45621 Objective = 116621.078527 Iteration: 46064 Objective = 116621.046255 Iteration: 46360 Objective = 116621.024684 Iteration: 46782 Objective = 116620.997274 Iteration: 47225 Objective = 116620.964029 Iteration: 47663 Objective = 116620.935685 Iteration: 48037 Objective = 116620.912094 Iteration: 48410 Objective = 116620.887736 Iteration: 48841 Objective = 116620.860933 Iteration: 49378 Objective = 116620.825854 Iteration: 49811 Objective = 116620.799250 Iteration: 50298 Objective = 116601.410473 Iteration: 50583 Objective = 116601.387997 Iteration: 50883 Objective = 116601.364885 Iteration: 51421 Objective = 116597.119288 Iteration: 51722 Objective = 116597.093399 Iteration: 52094 Objective = 116597.068437 Iteration: 52548 Objective = 116597.030549 Iteration: 52978 Objective = 116596.999213 Iteration: 53417 Objective = 116592.983738 Iteration: 53810 Objective = 116592.946676 Iteration: 54334 Objective = 116592.902602 Iteration: 54775 Objective = 116592.867106 Iteration: 55201 Objective = 116592.840592 Iteration: 55516 Objective = 116592.819713 Iteration: 55919 Objective = 116592.791909 Iteration: 56182 Objective = 116592.775344 Iteration: 56599 Objective = 116592.747762 Iteration: 56947 Objective = 116592.726097 Elapsed time = 591.86 sec. (57000 iterations). Iteration: 57223 Objective = 116592.711155 Iteration: 57711 Objective = 116592.681233 Iteration: 58252 Objective = 116592.644957 Iteration: 58623 Objective = 116592.621269 Iteration: 58958 Objective = 116592.602548 Iteration: 59401 Objective = 116592.577633 Iteration: 59888 Objective = 116592.548079 Iteration: 60235 Objective = 116592.528487 Iteration: 60570 Objective = 116592.506329 Iteration: 60993 Objective = 116592.482322 Iteration: 61337 Objective = 116592.459076 Iteration: 61724 Objective = 116592.431309 Iteration: 62188 Objective = 116592.401366 Iteration: 62503 Objective = 116592.382081 Iteration: 62836 Objective = 116592.360560 Iteration: 63190 Objective = 116592.341613 Iteration: 63554 Objective = 116592.322495 Iteration: 63854 Objective = 116592.304664 Iteration: 64240 Objective = 116592.283984 Iteration: 64636 Objective = 116592.260565 Iteration: 65005 Objective = 116592.239363 Iteration: 65306 Objective = 116592.223198 Iteration: 65678 Objective = 116592.205036 Iteration: 66067 Objective = 116592.182111 Iteration: 66415 Objective = 116592.161682 Iteration: 66749 Objective = 116592.140183 Iteration: 67048 Objective = 116592.122744 Iteration: 67390 Objective = 116592.104855 Iteration: 67733 Objective = 116592.084982 Iteration: 67987 Objective = 116592.068985 Iteration: 68409 Objective = 116592.042225 Iteration: 68763 Objective = 116592.020412 Iteration: 69095 Objective = 116592.002813 Iteration: 69434 Objective = 116591.982008 Iteration: 69756 Objective = 116591.964472 Iteration: 70186 Objective = 116591.940041 Iteration: 70500 Objective = 116591.916707 Iteration: 70867 Objective = 116591.894608 Iteration: 71229 Objective = 116591.872725 Iteration: 71655 Objective = 116591.850738 Iteration: 72034 Objective = 116591.828568 Iteration: 72489 Objective = 116591.803687 Iteration: 72768 Objective = 116591.787172 Elapsed time = 602.17 sec. (73000 iterations). Iteration: 73033 Objective = 116591.773780 Iteration: 73391 Objective = 116591.754108 Iteration: 73641 Objective = 116591.740111 Iteration: 74119 Objective = 116591.713601 Iteration: 74323 Objective = 116591.702220 Iteration: 74794 Objective = 116591.676070 Iteration: 75124 Objective = 116591.657816 Iteration: 75459 Objective = 116591.639637 Iteration: 75873 Objective = 116591.617452 Iteration: 76165 Objective = 116591.601659 Iteration: 76543 Objective = 116591.580666 Iteration: 76944 Objective = 116591.558950 Iteration: 77238 Objective = 116591.542681 Iteration: 77501 Objective = 116591.527250 Iteration: 78029 Objective = 116591.497371 Iteration: 78421 Objective = 116591.477567 Iteration: 78994 Objective = 116591.428561 Iteration: 79424 Objective = 116591.397350 Iteration: 79765 Objective = 116591.377042 Iteration: 80114 Objective = 116591.357874 Iteration: 80408 Objective = 116591.341335 Iteration: 80898 Objective = 116591.314698 Iteration: 81237 Objective = 116591.298458 Iteration: 81767 Objective = 116591.264653 Iteration: 82183 Objective = 116591.235771 Iteration: 82667 Objective = 116591.206100 Iteration: 83037 Objective = 116591.183742 Iteration: 83468 Objective = 116591.159525 Iteration: 83794 Objective = 116591.140527 Iteration: 84212 Objective = 116591.113679 Iteration: 84550 Objective = 116591.091556 Iteration: 85151 Objective = 116591.056991 Iteration: 85529 Objective = 116591.032250 Iteration: 85886 Objective = 116591.009120 Iteration: 86322 Objective = 116590.982381 Iteration: 86838 Objective = 116590.954705 Iteration: 87107 Objective = 116590.940154 Iteration: 87428 Objective = 116590.921899 Iteration: 87880 Objective = 116590.897533 Iteration: 88187 Objective = 116590.881437 Iteration: 88619 Objective = 116590.862072 Elapsed time = 612.50 sec. (89000 iterations). Iteration: 89012 Objective = 116590.839361 Iteration: 89400 Objective = 116590.815957 Iteration: 89686 Objective = 116590.797470 Iteration: 90176 Objective = 116590.769602 Iteration: 90648 Objective = 116590.741500 Iteration: 91113 Objective = 116590.715106 Iteration: 91476 Objective = 116590.694678 Iteration: 91815 Objective = 116590.673978 Iteration: 92198 Objective = 116590.652399 Iteration: 92617 Objective = 116590.632312 Iteration: 93009 Objective = 116590.611971 Iteration: 93430 Objective = 116590.588987 Iteration: 93805 Objective = 116590.569438 Iteration: 94258 Objective = 116590.547372 Iteration: 94582 Objective = 116590.527144 Iteration: 94893 Objective = 116590.509872 Iteration: 95277 Objective = 116590.486155 Iteration: 95728 Objective = 116590.452333 Iteration: 96334 Objective = 116590.412245 Iteration: 96752 Objective = 116590.385764 Iteration: 97235 Objective = 116590.352473 Iteration: 97631 Objective = 116590.330489 Iteration: 98070 Objective = 116590.302293 Iteration: 98473 Objective = 116590.277336 Iteration: 98809 Objective = 116590.256239 Iteration: 99231 Objective = 116590.229024 Iteration: 99800 Objective = 116590.194748 Iteration: 100213 Objective = 116590.171637 Iteration: 100618 Objective = 116590.146753 Iteration: 100935 Objective = 116590.128594 Iteration: 101276 Objective = 116590.109891 Iteration: 101693 Objective = 116590.086742 Iteration: 102087 Objective = 116590.063938 Iteration: 102373 Objective = 116590.047811 Iteration: 102724 Objective = 116590.029627 Iteration: 103150 Objective = 116590.006211 Iteration: 103441 Objective = 116589.990981 Iteration: 103838 Objective = 116589.969031 Iteration: 104127 Objective = 116589.951933 Iteration: 104530 Objective = 116589.926931 Iteration: 104953 Objective = 116589.903146 Elapsed time = 622.78 sec. (105000 iterations). Iteration: 105310 Objective = 116589.883709 Iteration: 105723 Objective = 116589.859396 Iteration: 106167 Objective = 116589.836554 Iteration: 106597 Objective = 116589.816751 Iteration: 106953 Objective = 116589.797921 Iteration: 107434 Objective = 116589.766192 Iteration: 107780 Objective = 116589.747019 Iteration: 108213 Objective = 116589.723661 Iteration: 108635 Objective = 116589.700345 Iteration: 109102 Objective = 116589.673270 Iteration: 109562 Objective = 116589.646531 Iteration: 109930 Objective = 116589.627473 Iteration: 110209 Objective = 116589.611547 Iteration: 110658 Objective = 116589.588749 Iteration: 111006 Objective = 116589.570768 Iteration: 111406 Objective = 116589.548499 Iteration: 111942 Objective = 116589.517715 Iteration: 112338 Objective = 116589.496873 Iteration: 112841 Objective = 116589.465336 Iteration: 113122 Objective = 116589.449617 Iteration: 113438 Objective = 116589.433445 Iteration: 113862 Objective = 116589.412168 Iteration: 114277 Objective = 116589.389743 Iteration: 114637 Objective = 116589.371162 Iteration: 114946 Objective = 116589.354317 Iteration: 115395 Objective = 116589.328529 Iteration: 115661 Objective = 116589.313476 Iteration: 116025 Objective = 116589.292597 Iteration: 116532 Objective = 116589.264065 Iteration: 116975 Objective = 116589.238370 Iteration: 117395 Objective = 116589.213226 Iteration: 117753 Objective = 116589.193202 Iteration: 118236 Objective = 116589.164925 Iteration: 118718 Objective = 116589.134922 Iteration: 119169 Objective = 116589.108819 Iteration: 119512 Objective = 116589.090925 Iteration: 119934 Objective = 116589.067131 Iteration: 120280 Objective = 116589.049556 Iteration: 120561 Objective = 116589.035799 Iteration: 120834 Objective = 116589.006162 Iteration: 121133 Objective = 116588.974996 Iteration: 121544 Objective = 116588.943055 Iteration: 121918 Objective = 116588.918539 Elapsed time = 633.45 sec. (122000 iterations). Iteration: 122272 Objective = 116588.897000 Iteration: 122775 Objective = 116588.863452 Iteration: 123230 Objective = 116588.835259 Iteration: 123532 Objective = 116588.816731 Iteration: 123943 Objective = 116588.790887 Iteration: 124236 Objective = 116588.774840 Iteration: 124573 Objective = 116588.754025 Iteration: 124900 Objective = 116588.735215 Iteration: 125338 Objective = 116588.709413 Iteration: 125651 Objective = 116588.691371 Iteration: 126147 Objective = 116588.664029 Iteration: 126554 Objective = 116588.641976 Iteration: 126875 Objective = 116588.622659 Iteration: 127311 Objective = 116588.601330 Iteration: 127684 Objective = 116588.580255 Iteration: 128095 Objective = 116588.551590 Iteration: 128471 Objective = 116588.526606 Iteration: 128805 Objective = 116588.504777 Iteration: 129194 Objective = 116588.484405 Iteration: 129638 Objective = 116588.460737 Iteration: 129947 Objective = 116588.445211 Iteration: 130233 Objective = 116588.428641 Iteration: 130647 Objective = 116588.406080 Iteration: 131172 Objective = 116588.369798 Iteration: 131681 Objective = 116588.336653 Iteration: 132096 Objective = 116588.311856 Iteration: 132565 Objective = 116588.288625 Iteration: 132864 Objective = 116588.271446 Iteration: 133248 Objective = 116588.247763 Iteration: 133647 Objective = 116588.226606 Iteration: 134110 Objective = 116588.202152 Iteration: 134535 Objective = 116588.175877 Iteration: 134952 Objective = 116588.151100 Iteration: 135344 Objective = 116588.112547 Iteration: 135769 Objective = 116588.079592 Iteration: 136214 Objective = 116588.045107 Iteration: 136643 Objective = 116588.016111 Iteration: 137083 Objective = 116587.992614 Iteration: 137408 Objective = 116587.976048 Iteration: 137817 Objective = 116587.952559 Elapsed time = 643.59 sec. (138000 iterations). Iteration: 138189 Objective = 116587.931024 Iteration: 138543 Objective = 116587.911848 Iteration: 138991 Objective = 116587.887705 Iteration: 139334 Objective = 116587.870700 Iteration: 139801 Objective = 116587.845527 Iteration: 140179 Objective = 116587.825747 Iteration: 140454 Objective = 116587.811195 Iteration: 140853 Objective = 116587.791685 Iteration: 141175 Objective = 116587.777689 Iteration: 141488 Objective = 116587.762675 Iteration: 141920 Objective = 116587.741835 Iteration: 142349 Objective = 116587.718505 Iteration: 142808 Objective = 116587.691762 Iteration: 143255 Objective = 116587.669652 Iteration: 143590 Objective = 116587.653977 Iteration: 143981 Objective = 116587.633224 Iteration: 144218 Objective = 116587.618883 Iteration: 144626 Objective = 116587.600104 Iteration: 144871 Objective = 116587.586597 Iteration: 145280 Objective = 116587.562945 Iteration: 145674 Objective = 116587.541356 Iteration: 146063 Objective = 116587.520124 Iteration: 146659 Objective = 116587.489223 Iteration: 147027 Objective = 116587.469261 Iteration: 147433 Objective = 116587.451647 Iteration: 147995 Objective = 116587.422408 Iteration: 148334 Objective = 116587.404420 Iteration: 148696 Objective = 116587.389618 Iteration: 149026 Objective = 116587.373639 Iteration: 149473 Objective = 116587.351748 Iteration: 149764 Objective = 116587.338292 Iteration: 150096 Objective = 116587.321621 Iteration: 150325 Objective = 116587.309923 Iteration: 150865 Objective = 116587.280893 Iteration: 151199 Objective = 116587.265436 Iteration: 151424 Objective = 116587.254671 Iteration: 151808 Objective = 116587.235091 Iteration: 152203 Objective = 116587.218535 Iteration: 152515 Objective = 116587.201285 Iteration: 152841 Objective = 116587.187639 Iteration: 153374 Objective = 116587.164099 Iteration: 153880 Objective = 116587.139177 Elapsed time = 653.59 sec. (154000 iterations). Iteration: 154421 Objective = 116587.113930 Iteration: 154874 Objective = 116587.092530 Iteration: 155323 Objective = 116587.068075 Iteration: 155824 Objective = 116587.045755 Iteration: 156107 Objective = 116587.031571 Iteration: 156539 Objective = 116587.010226 Iteration: 156929 Objective = 116586.992225 Iteration: 157172 Objective = 116586.978393 Iteration: 157502 Objective = 116586.962667 Iteration: 157925 Objective = 116586.945699 Iteration: 158447 Objective = 116586.908924 Iteration: 158717 Objective = 116586.891814 Iteration: 159232 Objective = 116586.862890 Iteration: 159527 Objective = 116586.850203 Iteration: 160020 Objective = 116586.825887 Iteration: 160517 Objective = 116586.795669 Iteration: 160887 Objective = 116586.776630 Iteration: 161220 Objective = 116586.758313 Iteration: 161670 Objective = 116586.728946 Iteration: 162008 Objective = 116586.711306 Iteration: 162444 Objective = 116586.687471 Iteration: 162804 Objective = 116586.672008 Iteration: 163165 Objective = 116586.651124 Iteration: 163534 Objective = 116586.632164 Iteration: 163920 Objective = 116586.614574 Iteration: 164433 Objective = 116586.590268 Iteration: 164855 Objective = 116586.571370 Iteration: 165314 Objective = 116586.549319 Iteration: 165711 Objective = 116586.530463 Iteration: 166048 Objective = 116586.517368 Iteration: 166595 Objective = 116586.489670 Iteration: 167077 Objective = 116586.464467 Iteration: 167514 Objective = 116586.441989 Iteration: 168067 Objective = 116586.409441 Iteration: 168368 Objective = 116586.393000 Iteration: 168875 Objective = 116586.362282 Iteration: 169253 Objective = 116586.341481 Iteration: 169671 Objective = 116586.311726 Iteration: 169932 Objective = 116586.291752 Iteration: 170289 Objective = 116586.265102 Iteration: 170781 Objective = 116586.230009 Elapsed time = 664.16 sec. (171000 iterations). Iteration: 171290 Objective = 116586.202213 Iteration: 171663 Objective = 116586.182909 Iteration: 172055 Objective = 116586.159139 Iteration: 172532 Objective = 116586.135447 Iteration: 173159 Objective = 116586.103205 Iteration: 173727 Objective = 116586.073830 Iteration: 174158 Objective = 116586.049341 Iteration: 174483 Objective = 116586.031703 Iteration: 174961 Objective = 116586.006852 Iteration: 175443 Objective = 116585.983856 Iteration: 175927 Objective = 116585.958373 Iteration: 176357 Objective = 116585.932181 Iteration: 176689 Objective = 116585.911208 Iteration: 177075 Objective = 116585.890489 Iteration: 177456 Objective = 116585.869735 Iteration: 178156 Objective = 116585.835866 Iteration: 178481 Objective = 116585.818000 Iteration: 178906 Objective = 116585.794048 Iteration: 179391 Objective = 116585.767275 Iteration: 179758 Objective = 116585.748730 Iteration: 180090 Objective = 116585.730952 Iteration: 180455 Objective = 116585.711959 Iteration: 180742 Objective = 116585.695772 Iteration: 181158 Objective = 116585.673647 Iteration: 181697 Objective = 116585.647635 Iteration: 181983 Objective = 116585.635116 Iteration: 182453 Objective = 116585.610681 Iteration: 182898 Objective = 116585.587255 Iteration: 183204 Objective = 116585.573254 Iteration: 183653 Objective = 116585.553723 Iteration: 184252 Objective = 116585.526639 Iteration: 184696 Objective = 116585.503747 Iteration: 185043 Objective = 116585.483314 Iteration: 185528 Objective = 116585.460815 Iteration: 185993 Objective = 116585.437460 Iteration: 186382 Objective = 116585.420707 Iteration: 186783 Objective = 116585.402913 Iteration: 187094 Objective = 116585.387356 Iteration: 187615 Objective = 116585.362115 Elapsed time = 674.33 sec. (188000 iterations). Iteration: 188155 Objective = 116585.335954 Iteration: 188407 Objective = 116585.322576 Iteration: 188946 Objective = 116585.295206 Iteration: 189415 Objective = 116585.274115 Iteration: 189770 Objective = 116585.256699 Iteration: 190295 Objective = 116585.232807 Iteration: 190654 Objective = 116585.216008 Iteration: 190980 Objective = 116585.201285 Iteration: 191452 Objective = 116585.179246 Iteration: 191824 Objective = 116585.158686 Iteration: 192248 Objective = 116585.137913 Iteration: 192646 Objective = 116585.117396 Iteration: 193211 Objective = 116585.090501 Iteration: 193723 Objective = 116585.062937 Iteration: 194066 Objective = 116585.044525 Iteration: 194548 Objective = 116585.018083 Iteration: 195103 Objective = 116584.987294 Iteration: 195575 Objective = 116584.965328 Iteration: 196008 Objective = 116584.947048 Iteration: 196458 Objective = 116584.924874 Iteration: 196934 Objective = 116584.904150 Iteration: 197388 Objective = 116584.881394 Iteration: 197823 Objective = 116584.861691 Iteration: 198289 Objective = 116584.839719 Iteration: 198692 Objective = 116584.820868 Iteration: 199041 Objective = 116584.804940 Iteration: 199410 Objective = 116584.785179 Iteration: 199962 Objective = 116584.749866 Iteration: 200339 Objective = 116584.713645 Iteration: 200721 Objective = 116584.681873 Iteration: 201235 Objective = 116584.637868 Iteration: 201554 Objective = 116584.616916 Iteration: 201949 Objective = 116584.593543 Iteration: 202255 Objective = 116584.576366 Iteration: 202617 Objective = 116584.554383 Iteration: 202990 Objective = 116584.534757 Iteration: 203518 Objective = 116584.505830 Iteration: 203954 Objective = 116584.483109 Iteration: 204424 Objective = 116584.457247 Iteration: 204798 Objective = 116584.438132 Elapsed time = 684.61 sec. (205000 iterations). Iteration: 205238 Objective = 116584.417248 Iteration: 205703 Objective = 116584.393056 Iteration: 206148 Objective = 116584.369173 Iteration: 206364 Objective = 116584.357733 Iteration: 206720 Objective = 116584.339926 Iteration: 207010 Objective = 116584.327728 Iteration: 207397 Objective = 116584.305760 Iteration: 207846 Objective = 116584.284066 Iteration: 208271 Objective = 116584.263561 Iteration: 208610 Objective = 116584.245630 Iteration: 209015 Objective = 116584.226916 Iteration: 209457 Objective = 116584.204864 Iteration: 209751 Objective = 116584.192151 Iteration: 210348 Objective = 116584.165020 Iteration: 210795 Objective = 116584.144438 Iteration: 211445 Objective = 116584.112584 Iteration: 211833 Objective = 116584.096654 Iteration: 212221 Objective = 116584.078658 Iteration: 212574 Objective = 116584.063121 Iteration: 212964 Objective = 116584.044977 Iteration: 213358 Objective = 116584.026686 Iteration: 213780 Objective = 116584.007948 Iteration: 214142 Objective = 116583.984840 Iteration: 214676 Objective = 116583.956570 Iteration: 215181 Objective = 116583.936039 Iteration: 215690 Objective = 116583.910094 Iteration: 216275 Objective = 116583.887017 Iteration: 216715 Objective = 116583.867589 Iteration: 217060 Objective = 116583.853858 Iteration: 217402 Objective = 116583.840915 Iteration: 217877 Objective = 116583.820372 Iteration: 218332 Objective = 116583.801199 Iteration: 218752 Objective = 116583.776342 Iteration: 219106 Objective = 116583.755907 Iteration: 219471 Objective = 116583.738319 Iteration: 219985 Objective = 116583.709212 Iteration: 220404 Objective = 116583.688737 Iteration: 220748 Objective = 116583.672393 Iteration: 221190 Objective = 116583.651043 Iteration: 221474 Objective = 116583.635741 Iteration: 221904 Objective = 116583.616884 Elapsed time = 694.84 sec. (222000 iterations). Iteration: 222396 Objective = 116583.592834 Iteration: 222755 Objective = 116583.577947 Iteration: 223265 Objective = 116583.554458 Iteration: 223860 Objective = 116583.525693 Iteration: 224340 Objective = 116583.503458 Iteration: 224877 Objective = 116583.475279 Iteration: 225153 Objective = 116583.461184 Iteration: 225554 Objective = 116583.441171 Iteration: 225936 Objective = 116583.423234 Iteration: 226511 Objective = 116583.395234 Iteration: 227001 Objective = 116583.370139 Iteration: 227432 Objective = 116583.335934 Iteration: 227744 Objective = 116583.297263 Iteration: 228179 Objective = 116583.256287 Iteration: 228532 Objective = 116583.225332 Iteration: 229053 Objective = 116583.192491 Iteration: 229449 Objective = 116583.167951 Iteration: 229837 Objective = 116583.145109 Iteration: 230294 Objective = 116583.121442 Iteration: 230760 Objective = 116583.097468 Iteration: 231394 Objective = 116583.066476 Iteration: 231945 Objective = 116583.040089 Iteration: 232399 Objective = 116583.015825 Iteration: 232887 Objective = 116582.991789 Iteration: 233395 Objective = 116582.967752 Iteration: 233842 Objective = 116582.943239 Iteration: 234145 Objective = 116582.927376 Iteration: 234475 Objective = 116582.909788 Iteration: 234813 Objective = 116582.892812 Iteration: 235196 Objective = 116582.873454 Iteration: 235559 Objective = 116582.856361 Iteration: 235946 Objective = 116582.840820 Iteration: 236558 Objective = 116582.813005 Iteration: 236989 Objective = 116582.792541 Iteration: 237457 Objective = 116582.768948 Iteration: 237987 Objective = 116582.745617 Iteration: 238528 Objective = 116582.718145 Iteration: 239043 Objective = 116582.697672 Iteration: 239378 Objective = 116582.683743 Iteration: 239649 Objective = 116582.670718 Elapsed time = 705.41 sec. (240000 iterations). Iteration: 240046 Objective = 116582.653097 Iteration: 240548 Objective = 116582.632017 Iteration: 240843 Objective = 116582.620536 Iteration: 241156 Objective = 116582.609981 Iteration: 241641 Objective = 116582.588568 Iteration: 241953 Objective = 116582.573636 Iteration: 242429 Objective = 116582.550142 Iteration: 242766 Objective = 116582.535489 Iteration: 243064 Objective = 116582.519354 Iteration: 243572 Objective = 116582.496952 Iteration: 243962 Objective = 116582.480899 Iteration: 244527 Objective = 116582.459107 Iteration: 245018 Objective = 116582.437232 Iteration: 245630 Objective = 116582.406564 Iteration: 246097 Objective = 116582.387379 Iteration: 246557 Objective = 116582.365921 Iteration: 247039 Objective = 116582.344701 Iteration: 247341 Objective = 116582.331998 Iteration: 247872 Objective = 116582.309186 Iteration: 248257 Objective = 116582.293724 Iteration: 248575 Objective = 116582.279102 Iteration: 249288 Objective = 116582.250318 Iteration: 249819 Objective = 116582.226135 Iteration: 250277 Objective = 116582.208766 Iteration: 250586 Objective = 116582.196005 Iteration: 251198 Objective = 116582.162130 Iteration: 251597 Objective = 116582.129563 Iteration: 252065 Objective = 116582.075858 Iteration: 252600 Objective = 116582.033298 Iteration: 253041 Objective = 116582.008616 Iteration: 253312 Objective = 116581.995075 Iteration: 253726 Objective = 116581.976920 Iteration: 253972 Objective = 116581.964580 Iteration: 254443 Objective = 116581.939076 Iteration: 254886 Objective = 116581.919012 Iteration: 255333 Objective = 116581.899790 Iteration: 255743 Objective = 116581.881828 Iteration: 256266 Objective = 116581.858388 Iteration: 256683 Objective = 116581.841259 Iteration: 257113 Objective = 116581.823524 Iteration: 257581 Objective = 116581.797705 Iteration: 257942 Objective = 116581.780811 Elapsed time = 715.91 sec. (258000 iterations). Iteration: 258529 Objective = 116581.756931 Iteration: 258826 Objective = 116581.745767 Iteration: 259319 Objective = 116581.724766 Iteration: 259786 Objective = 116581.704526 Iteration: 260235 Objective = 116581.687597 Iteration: 260714 Objective = 116581.670429 Iteration: 261292 Objective = 116581.645160 Iteration: 261829 Objective = 116581.622728 Iteration: 262343 Objective = 116581.601453 Iteration: 262887 Objective = 116581.581823 Iteration: 263416 Objective = 116581.549580 Iteration: 264040 Objective = 116581.518164 Iteration: 264507 Objective = 116581.496219 Iteration: 264913 Objective = 116581.475748 Iteration: 265582 Objective = 116581.445474 Iteration: 266108 Objective = 116581.422955 Iteration: 266548 Objective = 116581.405220 Iteration: 267046 Objective = 116581.382514 Iteration: 267501 Objective = 116581.364515 Iteration: 268030 Objective = 116581.336535 Iteration: 268489 Objective = 116581.316528 Iteration: 269065 Objective = 116581.293603 Iteration: 269530 Objective = 116581.274561 Iteration: 269762 Objective = 116581.265647 Iteration: 270353 Objective = 116581.240465 Iteration: 270846 Objective = 116581.219957 Iteration: 271206 Objective = 116581.205946 Iteration: 271632 Objective = 116581.186867 Iteration: 272033 Objective = 116581.157177 Iteration: 272486 Objective = 116581.122032 Iteration: 273097 Objective = 116581.077935 Iteration: 273525 Objective = 116581.057494 Iteration: 274063 Objective = 116581.025774 Iteration: 274645 Objective = 116580.997361 Iteration: 275212 Objective = 116580.970769 Iteration: 275549 Objective = 116580.947600 Elapsed time = 726.02 sec. (276000 iterations). Iteration: 276144 Objective = 116580.919221 Iteration: 276467 Objective = 116580.902957 Iteration: 276822 Objective = 116580.885816 Iteration: 277205 Objective = 116580.870219 Iteration: 277677 Objective = 116580.847531 Iteration: 278079 Objective = 116580.828042 Iteration: 278598 Objective = 116580.807305 Iteration: 279151 Objective = 116580.781581 Iteration: 279617 Objective = 116580.759754 Iteration: 280127 Objective = 116580.741402 Iteration: 280604 Objective = 116580.721114 Iteration: 280974 Objective = 116580.706837 Iteration: 281604 Objective = 116580.681823 Iteration: 281956 Objective = 116580.669604 Iteration: 282403 Objective = 116580.652078 Iteration: 282821 Objective = 116580.635117 Iteration: 283378 Objective = 116580.608515 Iteration: 283978 Objective = 116580.580776 Iteration: 284420 Objective = 116580.559240 Iteration: 284852 Objective = 116580.539810 Iteration: 285399 Objective = 116580.519041 Iteration: 285956 Objective = 116580.494665 Iteration: 286452 Objective = 116580.474831 Iteration: 286692 Objective = 116580.465402 Iteration: 287041 Objective = 116580.450311 Iteration: 287572 Objective = 116580.424708 Iteration: 287868 Objective = 116580.411702 Iteration: 288505 Objective = 116580.388168 Iteration: 289140 Objective = 116580.361218 Iteration: 289798 Objective = 116580.334312 Iteration: 290222 Objective = 116580.319378 Iteration: 290768 Objective = 116580.279721 Iteration: 291294 Objective = 116580.242390 Iteration: 292103 Objective = 116580.205592 Iteration: 292581 Objective = 116580.182532 Iteration: 292833 Objective = 116580.171401 Iteration: 293222 Objective = 116580.153825 Iteration: 293778 Objective = 116580.129474 Elapsed time = 736.33 sec. (294000 iterations). Iteration: 294390 Objective = 116580.104534 Iteration: 295139 Objective = 116580.077695 Iteration: 295445 Objective = 116580.064760 Iteration: 295885 Objective = 116580.047234 Iteration: 296373 Objective = 116580.023502 Iteration: 296883 Objective = 116580.006060 Iteration: 297198 Objective = 116579.995917 Iteration: 297724 Objective = 116579.977994 Iteration: 298218 Objective = 116579.960515 Iteration: 298714 Objective = 116579.940190 Iteration: 299223 Objective = 116579.910328 Iteration: 299793 Objective = 116579.879990 Iteration: 300242 Objective = 116579.857785 Iteration: 300813 Objective = 116579.831072 Iteration: 301113 Objective = 116579.818422 Iteration: 301792 Objective = 116579.791563 Iteration: 302290 Objective = 116579.770779 Iteration: 302832 Objective = 116579.746211 Iteration: 303260 Objective = 116579.731585 Iteration: 303819 Objective = 116579.696365 Iteration: 304518 Objective = 116579.657649 Iteration: 305001 Objective = 116579.635293 Iteration: 305627 Objective = 116579.612551 Iteration: 306296 Objective = 116579.583928 Iteration: 306648 Objective = 116579.570885 Iteration: 307038 Objective = 116579.552703 Iteration: 307473 Objective = 116579.518032 Iteration: 308031 Objective = 116579.457977 Iteration: 308521 Objective = 116579.424857 Iteration: 309171 Objective = 116579.392440 Iteration: 309763 Objective = 116579.364982 Iteration: 310144 Objective = 116579.348874 Iteration: 310842 Objective = 116579.318396 Iteration: 311506 Objective = 116579.287691 Iteration: 312150 Objective = 116579.261760 Elapsed time = 746.78 sec. (313000 iterations). Iteration: 313116 Objective = 116579.213748 Iteration: 313496 Objective = 116579.195365 Iteration: 314106 Objective = 116579.171282 Iteration: 314515 Objective = 116579.155003 Iteration: 315240 Objective = 116579.118672 Iteration: 315608 Objective = 116579.105238 Iteration: 316178 Objective = 116579.079150 Iteration: 316906 Objective = 116579.050209 Iteration: 317380 Objective = 116579.028232 Iteration: 318081 Objective = 116579.002992 Iteration: 318572 Objective = 116578.981425 Iteration: 319330 Objective = 116578.950894 Iteration: 319891 Objective = 116578.931313 Iteration: 320345 Objective = 116578.916338 Iteration: 321073 Objective = 116578.882251 Iteration: 321412 Objective = 116578.870311 Iteration: 322055 Objective = 116578.847924 Iteration: 322647 Objective = 116578.827075 Iteration: 323111 Objective = 116578.783423 Iteration: 323666 Objective = 116578.731815 Iteration: 324525 Objective = 116578.679307 Iteration: 325153 Objective = 116578.649132 Iteration: 325514 Objective = 116578.632009 Iteration: 325995 Objective = 116578.612488 Iteration: 326387 Objective = 116578.597905 Iteration: 326963 Objective = 116578.577028 Iteration: 327306 Objective = 116578.563921 Iteration: 327806 Objective = 116578.546663 Iteration: 328256 Objective = 116578.527470 Iteration: 328569 Objective = 116578.514994 Iteration: 329004 Objective = 116578.500050 Iteration: 329534 Objective = 116578.480047 Iteration: 330035 Objective = 116578.461987 Iteration: 330484 Objective = 116578.444939 Elapsed time = 756.78 sec. (331000 iterations). Iteration: 331449 Objective = 116578.407799 Iteration: 332107 Objective = 116578.381233 Iteration: 332904 Objective = 116578.350810 Iteration: 333415 Objective = 116578.328744 Iteration: 333935 Objective = 116578.307229 Iteration: 334349 Objective = 116578.292384 Iteration: 334957 Objective = 116578.270416 Iteration: 335584 Objective = 116578.249947 Iteration: 336061 Objective = 116578.232955 Iteration: 336601 Objective = 116578.214064 Iteration: 337170 Objective = 116578.165392 Iteration: 337606 Objective = 116578.100151 Iteration: 337940 Objective = 116578.081300 Iteration: 338410 Objective = 116578.060852 Iteration: 338949 Objective = 116578.040176 Iteration: 339524 Objective = 116578.017214 Iteration: 340020 Objective = 116577.996659 Iteration: 340371 Objective = 116577.980130 Iteration: 340944 Objective = 116577.958609 Iteration: 341648 Objective = 116577.931787 Iteration: 342431 Objective = 116577.898916 Iteration: 342901 Objective = 116577.879601 Iteration: 343409 Objective = 116577.856559 Iteration: 343986 Objective = 116577.834385 Iteration: 344762 Objective = 116577.802805 Iteration: 345570 Objective = 116577.767657 Iteration: 346220 Objective = 116577.743208 Iteration: 346749 Objective = 116577.722908 Iteration: 347260 Objective = 116577.701498 Iteration: 347910 Objective = 116577.678900 Iteration: 348421 Objective = 116577.659027 Iteration: 348801 Objective = 116577.644443 Iteration: 349248 Objective = 116577.622033 Iteration: 349847 Objective = 116577.560482 Elapsed time = 767.22 sec. (350000 iterations). Iteration: 350479 Objective = 116577.524495 Iteration: 351086 Objective = 116577.490988 Iteration: 351464 Objective = 116577.467232 Iteration: 352210 Objective = 116577.437726 Iteration: 352804 Objective = 116577.413578 Iteration: 353182 Objective = 116577.398324 Iteration: 353900 Objective = 116577.371071 Iteration: 354425 Objective = 116577.353083 Iteration: 354976 Objective = 116577.334530 Iteration: 355501 Objective = 116577.314920 Iteration: 355870 Objective = 116577.302482 Iteration: 356478 Objective = 116577.279729 Iteration: 356864 Objective = 116577.268314 Iteration: 357262 Objective = 116577.257414 Iteration: 357666 Objective = 116577.245360 Iteration: 358076 Objective = 116577.233927 Iteration: 358867 Objective = 116577.210046 Iteration: 359570 Objective = 116577.187732 Iteration: 360314 Objective = 116577.161434 Iteration: 360843 Objective = 116577.140618 Iteration: 361453 Objective = 116577.109956 Iteration: 362107 Objective = 116577.072096 Iteration: 362640 Objective = 116577.049603 Iteration: 362986 Objective = 116577.034091 Iteration: 363583 Objective = 116577.012159 Iteration: 363952 Objective = 116577.000622 Iteration: 364351 Objective = 116576.983815 Iteration: 364813 Objective = 116576.968666 Iteration: 365478 Objective = 116576.946620 Iteration: 366182 Objective = 116576.923514 Iteration: 366632 Objective = 116576.910270 Iteration: 367109 Objective = 116576.897959 Iteration: 367783 Objective = 116576.874995 Iteration: 368260 Objective = 116576.857925 Iteration: 368766 Objective = 116576.837634 Elapsed time = 777.73 sec. (369000 iterations). Iteration: 369333 Objective = 116576.815867 Iteration: 370071 Objective = 116576.788130 Iteration: 370878 Objective = 116576.759426 Iteration: 371413 Objective = 116576.726667 Iteration: 372054 Objective = 116576.681162 Iteration: 372569 Objective = 116576.656608 Iteration: 372949 Objective = 116576.636508 Iteration: 373491 Objective = 116576.617699 Iteration: 374206 Objective = 116576.588207 Iteration: 374808 Objective = 116576.566696 Iteration: 375310 Objective = 116576.547756 Iteration: 376043 Objective = 116576.521560 Iteration: 376635 Objective = 116576.500529 Iteration: 377288 Objective = 116576.480874 Iteration: 377871 Objective = 116576.463020 Iteration: 378310 Objective = 116576.447519 Iteration: 378683 Objective = 116576.435398 Iteration: 379213 Objective = 116576.417662 Iteration: 379683 Objective = 116576.401403 Iteration: 380216 Objective = 116576.383936 Iteration: 380744 Objective = 116576.354703 Iteration: 381181 Objective = 116576.326147 Iteration: 381633 Objective = 116576.298305 Iteration: 382152 Objective = 116576.279840 Iteration: 382550 Objective = 116576.264276 Iteration: 383060 Objective = 116576.245939 Iteration: 383622 Objective = 116576.222773 Iteration: 384252 Objective = 116576.199167 Iteration: 384869 Objective = 116576.176159 Iteration: 385316 Objective = 116576.162795 Iteration: 385994 Objective = 116576.141554 Iteration: 386851 Objective = 116576.108937 Elapsed time = 787.73 sec. (387000 iterations). Iteration: 387400 Objective = 116576.094295 Iteration: 387824 Objective = 116576.081723 Iteration: 388284 Objective = 116576.065960 Iteration: 388904 Objective = 116576.046784 Iteration: 389313 Objective

asked 15 Sep '17, 09:23

Raj's gravatar image

Raj
132
accept rate: 0%


Perhaps you could try introducing a small random perturbation of the right-hand side before solving (then remove the perturbation once crossover is done). You did not specify which solver you are using. CPLEX contains two parameters for perturbation, one a switch that you would set to 1 turn perturbation on, the other a numerical parameter controlling the size of the perturbation (which you could leave at its default unless something suggested you needed to tweak it). I don't know with certainty that it works with barrier, but I think it does. If you are using a different solver, you could check for a similar feature and, absent one, just introduce the perturbation in your code that creates the problem instance.

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answered 16 Sep '17, 11:54

Paul%20Rubin's gravatar image

Paul Rubin ♦♦
14.6k412
accept rate: 19%

Hello Rubin, Thank you so much for your advice. I am using CPLEX solver. I switched on the perturbation and it worked like a charm for my problem.

(16 Sep '17, 15:25) Raj

Great. Since you're new to the site, may I point out the check mark button for accepting an answer?

(16 Sep '17, 15:44) Paul Rubin ♦♦
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Asked: 15 Sep '17, 09:23

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Last updated: 16 Sep '17, 15:44

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