Element = Lattice = Model = Element: Al
Lattice: hcp
Model: MEAM_LAMMPS_DickelBaskesAslam_2018_MgAlZn__MO_093637366498_000
Computed model cutoff of 5.999999990463257 Angstroms
Computed isolated atomic energy of 0.0 eV for species Al

==============================================================================
==============================================================================
 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: -13.307108
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.8704327523708377, total energy = -13.307107565043227

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: -13.307108
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.8704327743500473, total energy = -13.307107565043212

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: -13.307108
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.870432758703828, total energy = -13.307107565043221

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: -13.307108
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.8704327464103754, total energy = -13.307107565043223

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: -13.307108
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8704327452927867, total energy = -13.30710756504323

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: -13.307108
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.8704327556886726, total energy = -13.307107565043227

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: -13.307108
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.8704327546060084, total energy = -13.30710756504322

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: -13.307108
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.87043275590986, total energy = -13.307107565043227

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: -13.307108
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 2.870432751998307, total energy = -13.307107565043225

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: -13.307108
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.8704327492043396, total energy = -13.307107565043228

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: -13.307108
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.8704327626153834, total energy = -13.307107565043223

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: -13.307108
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.8704327429761163, total energy = -13.307107565043221

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: -13.307108
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.870432758703828, total energy = -13.307107565043225

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: -13.307108
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.870432775406516, total energy = -13.307107565043218

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: -13.307108
         Iterations: 32
         Function evaluations: 68
Results for this minimization:
  a = 2.8704327576793736, total energy = -13.307107565043225

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: -13.307108
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.8704327483894305, total energy = -13.307107565043225

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: -13.307108
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.8704327528364955, total energy = -13.307107565043225

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: -13.307108
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.870432752533816, total energy = -13.307107565043223

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: -13.307108
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.87043275553733, total energy = -13.307107565043221

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: -13.307108
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.870432740901014, total energy = -13.30710756504322

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: -13.307108
         Iterations: 36
         Function evaluations: 75
Results for this minimization:
  a = 2.8704327604733395, total energy = -13.307107565043228

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: -13.307108
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.870432765613076, total energy = -13.30710756504322

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: -13.307108
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.870432747527957, total energy = -13.30710756504322

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: -13.307108
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.8704327531158897, total energy = -13.307107565043223

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: -13.307108
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.8704327523708337, total energy = -13.307107565043227

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: -13.307108
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.8704327464103705, total energy = -13.307107565043221

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: -13.307108
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.8704327468294637, total energy = -13.307107565043225

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: -13.307108
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.870432768133469, total energy = -13.307107565043216

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: -13.307108
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8704327500425233, total energy = -13.307107565043225

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: -13.307108
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.8704327548388378, total energy = -13.30710756504323

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: -13.307108
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.8704327431973073, total energy = -13.307107565043225

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: -13.307108
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.870432753115889, total energy = -13.307107565043225

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: -13.307108
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8704327532323077, total energy = -13.307107565043223

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: -13.307108
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.8704327464103656, total energy = -13.30710756504322

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: -13.307108
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.8704327559098584, total energy = -13.307107565043227

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: -13.307108
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.8704327598214157, total energy = -13.307107565043223

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: -13.307108
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.8704327464103665, total energy = -13.307107565043221

Attempting to perform relaxation using initial lattice constant guess of a = 5.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -13.307108
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.87043275590986, total energy = -13.307107565043223

Attempting to perform relaxation using initial lattice constant guess of a = 5.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -13.307108
         Iterations: 40
         Function evaluations: 83
Results for this minimization:
  a = 2.870432741427786, total energy = -13.307107565043221

Attempting to perform relaxation using initial lattice constant guess of a = 5.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -13.307108
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.870432765592703, total energy = -13.307107565043225

Attempting to perform relaxation using initial lattice constant guess of a = 6.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -13.307108
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.870432745292776, total energy = -13.307107565043221

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 3.749917635703275 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 71
         Function evaluations: 151
Results for this minimization:
  a = 2.8365449724926046, c = 4.799672457243819, total energy = -13.321049991802212

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 3.9842874879347296 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 72
         Function evaluations: 155
Results for this minimization:
  a = 2.8365449780593717, c = 4.799672502958543, total energy = -13.321049991802207

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 4.218657340166184 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 66
         Function evaluations: 146
Results for this minimization:
  a = 2.8365449824973568, c = 4.799672469981312, total energy = -13.321049991802209

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 4.45302719239764 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 69
         Function evaluations: 148
Results for this minimization:
  a = 2.836544980162027, c = 4.799672462216112, total energy = -13.32104999180221

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 4.687397044629094 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 65
         Function evaluations: 144
Results for this minimization:
  a = 2.836544992003909, c = 4.799672441209088, total energy = -13.321049991802212

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 4.921766896860548 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 71
         Function evaluations: 153
Results for this minimization:
  a = 2.8365449749380796, c = 4.799672481065377, total energy = -13.321049991802209

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 5.156136749092004 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 79
         Function evaluations: 165
Results for this minimization:
  a = 2.8365449736786728, c = 4.799672494939085, total energy = -13.321049991802209

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 5.390506601323459 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 79
         Function evaluations: 166
Results for this minimization:
  a = 2.8365449767338347, c = 4.7996725444350785, total energy = -13.321049991802203

Attempting to perform relaxation using initial lattice constant guess of a = [2.87043275] Angstroms and c = 5.624876453554913 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.321050
         Iterations: 80
         Function evaluations: 168
Results for this minimization:
  a = 2.836544980726522, c = 4.799672428765963, total energy = -13.321049991802209

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

 Final lattice Constants:
   a = 2.8365449724926046 Angstroms, c = 4.799672457243819 Angstroms, c/a = 1.692084

 Total energy: -13.321049991802212 eV

 Cohesive energy: -3.330262497950553 eV/atom

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