Element = Lattice = Model = Element: O
Lattice: hcp
Model: MEAM_LAMMPS_WeiZhouLi_2019_BeO__MO_344044439515_000
Computed model cutoff of 5.499999991804372 Angstroms
Computed isolated atomic energy of 0.0 eV for species O

==============================================================================
==============================================================================
 Starting optimization to find optimum lattice constant 'a' with c/a fixed to
 sqrt(8/3)
==============================================================================
==============================================================================


Attempting to perform relaxation using initial lattice constant guess of a = 1.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 33
         Function evaluations: 68
Results for this minimization:
  a = 1.2868525370955473, total energy = 26.208756380437414

Attempting to perform relaxation using initial lattice constant guess of a = 1.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 1.2868525452911856, total energy = 26.20875638043751

Attempting to perform relaxation using initial lattice constant guess of a = 1.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 31
         Function evaluations: 66
Results for this minimization:
  a = 1.2868525311350822, total energy = 26.20875638043753

Attempting to perform relaxation using initial lattice constant guess of a = 1.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 32
         Function evaluations: 70
Results for this minimization:
  a = 1.2868525337427852, total energy = 26.208756380437496

Attempting to perform relaxation using initial lattice constant guess of a = 1.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 34
         Function evaluations: 70
Results for this minimization:
  a = 1.2868525296449658, total energy = 26.208756380437503

Attempting to perform relaxation using initial lattice constant guess of a = 1.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 1.286852539516985, total energy = 26.20875638043749

Attempting to perform relaxation using initial lattice constant guess of a = 1.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 26.208756
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 1.286852532252669, total energy = 26.208756380437478

Attempting to perform relaxation using initial lattice constant guess of a = 1.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 6.28125, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 6.70000000000001, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 7.118750000000004, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 40
         Function evaluations: 114
Results for this minimization:
  a = 5.737499999999999, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 40
         Function evaluations: 114
Results for this minimization:
  a = 6.056249999999993, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 40
         Function evaluations: 114
Results for this minimization:
  a = 6.375, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.643750000000005, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.912500000000014, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 2.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 6.1812499999999995, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 6.450000000000008, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 6.71875, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 38
         Function evaluations: 109
Results for this minimization:
  a = 5.6875000000000036, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 38
         Function evaluations: 109
Results for this minimization:
  a = 5.906250000000009, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 38
         Function evaluations: 109
Results for this minimization:
  a = 6.125, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 37
         Function evaluations: 106
Results for this minimization:
  a = 5.618750000000004, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 37
         Function evaluations: 106
Results for this minimization:
  a = 5.8125, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 3.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 37
         Function evaluations: 106
Results for this minimization:
  a = 6.006250000000001, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 37
         Function evaluations: 106
Results for this minimization:
  a = 6.200000000000006, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.568749999999996, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.7375000000000025, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 37
         Function evaluations: 107
Results for this minimization:
  a = 5.90625, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.625000000000001, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.781250000000003, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.937499999999997, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 4.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 35
         Function evaluations: 102
Results for this minimization:
  a = 5.606250000000001, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 5.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -0.000001
         Iterations: 35
         Function evaluations: 80
Results for this minimization:
  a = 5.499884397548158, total energy = -6.248759359269016e-07

Attempting to perform relaxation using initial lattice constant guess of a = 5.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 34
         Function evaluations: 99
Results for this minimization:
  a = 5.637500000000001, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 5.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 33
         Function evaluations: 97
Results for this minimization:
  a = 5.5125, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 5.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 33
         Function evaluations: 97
Results for this minimization:
  a = 5.64375, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = 5.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -0.000001
         Iterations: 34
         Function evaluations: 79
Results for this minimization:
  a = 5.499884397571441, total energy = -6.248759359270149e-07

==============================================================================
==============================================================================
 Starting optimization with both a and c/a relaxed
==============================================================================
==============================================================================


Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 7.185018889783725 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 39
         Function evaluations: 144
Results for this minimization:
  a = 5.981124282358947, c = 8.71183540386277, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 7.634082570395208 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000118
         Iterations: 190
         Function evaluations: 380
Results for this minimization:
  a = 5.499999690769165, c = 8.976851380136788, total energy = -0.00011793155718660387

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 8.08314625100669 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: 0.000000
         Iterations: 36
         Function evaluations: 136
Results for this minimization:
  a = 5.912375727389302, c = 8.689382219832193, total energy = 0.0

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 8.532209931618173 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000120
         Iterations: 84
         Function evaluations: 205
Results for this minimization:
  a = 5.498096672746819, c = 9.387737501933866, total energy = -0.00012049510953517951

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 8.981273612229655 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000120
         Iterations: 88
         Function evaluations: 213
Results for this minimization:
  a = 5.498096672759434, c = 9.411518195210727, total energy = -0.00012049510953517973

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 9.430337292841138 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000120
         Iterations: 89
         Function evaluations: 213
Results for this minimization:
  a = 5.4980966728474865, c = 9.782006437949212, total energy = -0.00012049510953517934

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 9.87940097345262 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000120
         Iterations: 91
         Function evaluations: 219
Results for this minimization:
  a = 5.498096672761987, c = 10.151071579373273, total energy = -0.0001204951095351796

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 10.328464654064103 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000120
         Iterations: 85
         Function evaluations: 214
Results for this minimization:
  a = 5.498096672770391, c = 10.597432644418916, total energy = -0.0001204951095351794

Attempting to perform relaxation using initial lattice constant guess of a = [5.4998844] Angstroms and c = 10.777528334675585 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000120
         Iterations: 93
         Function evaluations: 220
Results for this minimization:
  a = 5.49809667284242, c = 10.895711978313782, total energy = -0.00012049510953517935