Element = Lattice = Model = Element: Cu
Lattice: hcp
Model: MEAM_LAMMPS_Wagner_2007_Cu__MO_313717476091_000
Computed model cutoff of 3.999999990463257 Angstroms
Computed isolated atomic energy of 0.0 eV for species Cu

==============================================================================
==============================================================================
 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: -14.108292
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.5613078232854636, total energy = -14.108291555635725

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: -14.108292
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.5613078206661166, total energy = -14.108291555635725

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: -14.108292
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.561307817697525, total energy = -14.108291555635725

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: -14.108292
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 2.561307819932704, total energy = -14.108291555635724

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: -14.108292
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.561307819932702, total energy = -14.108291555635724

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: -14.108292
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.5613078177906594, total energy = -14.108291555635727

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: -14.108292
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.5613078292924913, total energy = -14.108291555635724

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: -14.108292
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5613078232854605, total energy = -14.108291555635724

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: -14.108292
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.56130783557892, total energy = -14.108291555635725

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: -14.108292
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.561307800561189, total energy = -14.108291555635718

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: -14.108292
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.5613078098744158, total energy = -14.108291555635724

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: -14.108292
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.561307822389062, total energy = -14.108291555635724

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: -14.108292
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.5613078182796016, total energy = -14.108291555635725

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: -14.108292
         Iterations: 32
         Function evaluations: 68
Results for this minimization:
  a = 2.561307809001301, total energy = -14.108291555635724

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: -14.108292
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.5613078137859704, total energy = -14.108291555635724

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: -14.108292
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.561307815980398, total energy = -14.108291555635725

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: -14.108292
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.5613078042864794, total energy = -14.108291555635724

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: -14.108292
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5613078294554725, total energy = -14.108291555635722

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: -14.108292
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.5613078129477795, total energy = -14.108291555635725

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: -14.108292
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.561307823128299, total energy = -14.108291555635722

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: -14.108292
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.561307807452976, total energy = -14.108291555635722

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: -14.108292
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.561307816189944, total energy = -14.108291555635724

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: -14.108292
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.561307816300541, total energy = -14.108291555635725

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: -14.108292
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.5613078183960134, total energy = -14.108291555635725

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: -14.108292
         Iterations: 39
         Function evaluations: 81
Results for this minimization:
  a = 2.561307816207408, total energy = -14.108291555635725

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 3.3460785214872457 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 72
         Function evaluations: 154
Results for this minimization:
  a = 2.5537292264020808, c = 4.207494021924397, total energy = -14.109556115314987

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 3.5552084290801984 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 77
         Function evaluations: 161
Results for this minimization:
  a = 2.5537292304992874, c = 4.20749403218875, total energy = -14.109556115314989

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 3.764338336673151 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 69
         Function evaluations: 145
Results for this minimization:
  a = 2.553729212992652, c = 4.207494027218361, total energy = -14.109556115314986

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 3.973468244266104 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 69
         Function evaluations: 146
Results for this minimization:
  a = 2.5537292260502027, c = 4.207494030201813, total energy = -14.109556115314986

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 4.1825981518590565 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 66
         Function evaluations: 142
Results for this minimization:
  a = 2.5537292128578315, c = 4.2074940489402595, total energy = -14.109556115314987

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 4.391728059452009 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 66
         Function evaluations: 141
Results for this minimization:
  a = 2.553729224535678, c = 4.207494039665972, total energy = -14.109556115314987

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 4.600857967044962 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 70
         Function evaluations: 148
Results for this minimization:
  a = 2.5537292295911826, c = 4.207494016147038, total energy = -14.10955611531499

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 4.8099878746379146 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 73
         Function evaluations: 153
Results for this minimization:
  a = 2.5537292100018694, c = 4.207494058569997, total energy = -14.109556115314986

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130782] Angstroms and c = 5.019117782230867 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109556
         Iterations: 75
         Function evaluations: 152
Results for this minimization:
  a = 2.5537292233894284, c = 4.2074940436783095, total energy = -14.109556115314989

==============================================================================
==============================================================================
 Finished with optimization
==============================================================================
==============================================================================

 Final lattice Constants:
   a = 2.5537292295911826 Angstroms, c = 4.207494016147038 Angstroms, c/a = 1.647588

 Total energy: -14.10955611531499 eV

 Cohesive energy: -3.5273890288287477 eV/atom

==============================================================================
==============================================================================