Element = Lattice = Model = Element: N
Lattice: hcp
Model: MEAM_LAMMPS_MirazDhariwalMeng_2020_CuNTi__MO_122936827583_000
Computed model cutoff of 5.000000004544876 Angstroms
Computed isolated atomic energy of 0.0 eV for species N

==============================================================================
==============================================================================
 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: 0.000000
         Iterations: 41
         Function evaluations: 115
Results for this minimization:
  a = 5.75000000000001, total energy = 0.0

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: 0.000000
         Iterations: 42
         Function evaluations: 118
Results for this minimization:
  a = 6.468749999999999, total energy = 0.0

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: 0.000000
         Iterations: 41
         Function evaluations: 116
Results for this minimization:
  a = 5.1875, total energy = 0.0

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: 0.000000
         Iterations: 41
         Function evaluations: 116
Results for this minimization:
  a = 5.70625000000002, total energy = 0.0

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: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 5.025000000000008, total energy = 0.0

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: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 5.443750000000005, total energy = 0.0

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: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 5.862499999999999, total energy = 0.0

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: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.100000000000007, 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: -0.000567
         Iterations: 40
         Function evaluations: 88
Results for this minimization:
  a = 4.995286633685466, total energy = -0.0005672316731933893

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: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.106249999999995, 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: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.375, 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: -0.000567
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 4.995286633839715, total energy = -0.0005672316731933919

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: 38
         Function evaluations: 109
Results for this minimization:
  a = 5.250000000000005, 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: 38
         Function evaluations: 109
Results for this minimization:
  a = 5.46875, 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: -0.000567
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 4.995286633679646, total energy = -0.0005672316731933937

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: 37
         Function evaluations: 106
Results for this minimization:
  a = 5.231250000000006, 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: 37
         Function evaluations: 106
Results for this minimization:
  a = 5.425000000000001, 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: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.0625, 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: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.231250000000001, 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: -0.000567
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 4.995286634005608, total energy = -0.0005672316731933916

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: 35
         Function evaluations: 101
Results for this minimization:
  a = 5.156249999999997, 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: 35
         Function evaluations: 101
Results for this minimization:
  a = 5.312500000000002, 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: 35
         Function evaluations: 102
Results for this minimization:
  a = 5.03125, 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: 35
         Function evaluations: 102
Results for this minimization:
  a = 5.175000000000001, 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: 34
         Function evaluations: 99
Results for this minimization:
  a = 5.0875, 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: 34
         Function evaluations: 99
Results for this minimization:
  a = 5.225, 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: -0.000567
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 4.995286633679644, total energy = -0.0005672316731933929

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: -0.000567
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 4.995286633842625, total energy = -0.0005672316731933919

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: -0.000567
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 4.9952866337058355, total energy = -0.0005672316731933927

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


Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 6.525815131445442 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 239
         Function evaluations: 462
Results for this minimization:
  a = 4.999999929750335, c = 8.148054494084754, total energy = -0.0005703961739017686

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 6.933678577160782 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 287
         Function evaluations: 546
Results for this minimization:
  a = 4.999999929701014, c = 8.14805449413009, total energy = -0.0005703961739017682

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 7.341542022876122 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 287
         Function evaluations: 544
Results for this minimization:
  a = 4.999999931755225, c = 8.14805449298985, total energy = -0.0005703961739017667

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 7.749405468591462 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 88
         Function evaluations: 202
Results for this minimization:
  a = 4.993098343870337, c = 8.522761299549055, total energy = -0.0005703965555772766

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 8.157268914306801 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 94
         Function evaluations: 218
Results for this minimization:
  a = 4.993098343757971, c = 8.170831179078224, total energy = -0.0005703965555772783

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 8.565132360022142 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 82
         Function evaluations: 201
Results for this minimization:
  a = 4.993098343559113, c = 8.665943443810008, total energy = -0.0005703965555772772

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 8.972995805737483 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 74
         Function evaluations: 195
Results for this minimization:
  a = 4.993098343599092, c = 9.163961515322693, total energy = -0.0005703965555772771

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 9.380859251452822 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 92
         Function evaluations: 219
Results for this minimization:
  a = 4.993098343315598, c = 9.861575999317573, total energy = -0.0005703965555772755

Attempting to perform relaxation using initial lattice constant guess of a = [4.99528663] Angstroms and c = 9.788722697168161 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.000570
         Iterations: 79
         Function evaluations: 187
Results for this minimization:
  a = 4.993098343787516, c = 10.089220059269538, total energy = -0.0005703965555772764