Element = Lattice = Model = Element: Cd
Lattice: hcp
Model: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Computed model cutoff of 10.263199995271899 Angstroms
Computed isolated atomic energy of 0.0 eV for species Cd

==============================================================================
==============================================================================
 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))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 1.0 Angstroms
Exception message:
Attempted to evaluate energy at a = 1.0 Angstroms and c = 1.632993161855452 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


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: -1.257212
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.801002390030771, total energy = -1.25721245737522

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: -1.257212
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.801002413034439, total energy = -1.2572124573752186

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: -1.257212
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.801002406020422, total energy = -1.2572124573752175

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: -1.257212
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.8010023891925844, total energy = -1.2572124573752201

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: -1.257212
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.8010023863636904, total energy = -1.25721245737522

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: -1.257212
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.801002388074995, total energy = -1.257212457375217

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: -1.257212
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.801002375781536, total energy = -1.2572124573752186

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: -1.257212
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.8010023951530476, total energy = -1.257212457375221

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: -1.257212
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.8010023776441826, total energy = -1.2572124573752197

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: -1.257212
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.8010023891925813, total energy = -1.2572124573752188

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: -1.257212
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.8010023862123488, total energy = -1.2572124573752175

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: -1.257212
         Iterations: 34
         Function evaluations: 75
Results for this minimization:
  a = 2.801002413034439, total energy = -1.257212457375218

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: -1.257212
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.801002390153008, total energy = -1.2572124573752195

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: -1.257212
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.801002375222742, total energy = -1.2572124573752161

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: -1.257212
         Iterations: 34
         Function evaluations: 75
Results for this minimization:
  a = 2.8010023993847417, total energy = -1.2572124573752215

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: -1.257212
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 2.801002389192581, total energy = -1.257212457375219

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: -1.257212
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.801002375490498, total energy = -1.2572124573752201

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: -1.257212
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.80100238379091, total energy = -1.257212457375218

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: -1.257212
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.801002388878259, total energy = -1.2572124573752197

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: -1.257212
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.801002401113509, total energy = -1.2572124573752173

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: -1.257212
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.801002399419666, total energy = -1.2572124573752188

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: -1.257212
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.801002375781536, total energy = -1.257212457375218

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: -1.257212
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.8010023808223163, total energy = -1.2572124573752173

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: -1.257212
         Iterations: 36
         Function evaluations: 79
Results for this minimization:
  a = 2.8010023622773574, total energy = -1.2572124573752168

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: -1.257212
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.8010024090297536, total energy = -1.2572124573752161

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: -1.257212
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.801002374477682, total energy = -1.2572124573752193

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: -1.257212
         Iterations: 39
         Function evaluations: 86
Results for this minimization:
  a = 2.801002377542318, total energy = -1.25721245737522

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: -1.257212
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.801002390030767, total energy = -1.2572124573752201

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: -1.257212
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.8010023541748508, total energy = -1.257212457375215

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: -1.257212
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.8010023862123505, total energy = -1.2572124573752181

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: -1.257212
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.8010023777373103, total energy = -1.257212457375219

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: -1.257212
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.801002413034439, total energy = -1.257212457375218

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: -1.257212
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.8010023757582485, total energy = -1.2572124573752164

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: -1.257212
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.80100239003077, total energy = -1.2572124573752193

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: -1.257212
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.8010023995360838, total energy = -1.25721245737522

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: -1.257212
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.8010023752227386, total energy = -1.2572124573752173

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: -1.257212
         Iterations: 39
         Function evaluations: 86
Results for this minimization:
  a = 2.8010023760434706, total energy = -1.2572124573752188

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: -1.257212
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.8010024035349423, total energy = -1.2572124573752168

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: -1.257212
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.8010023988783344, total energy = -1.257212457375222

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: -1.257212
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8010023891925737, total energy = -1.2572124573752173

Attempting to perform relaxation using initial lattice constant guess of a = 6.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.8010023887982207, total energy = -1.2572124573752201

Attempting to perform relaxation using initial lattice constant guess of a = 6.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.801002413034439, total energy = -1.257212457375219

Attempting to perform relaxation using initial lattice constant guess of a = 6.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.801002400180731, total energy = -1.257212457375215

Attempting to perform relaxation using initial lattice constant guess of a = 6.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.801002383790904, total energy = -1.257212457375217

Attempting to perform relaxation using initial lattice constant guess of a = 6.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.8010023663518875, total energy = -1.25721245737522

Attempting to perform relaxation using initial lattice constant guess of a = 6.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.8010023891925764, total energy = -1.2572124573752175

Attempting to perform relaxation using initial lattice constant guess of a = 6.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.801002394175157, total energy = -1.2572124573752206

Attempting to perform relaxation using initial lattice constant guess of a = 7.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.801002401113508, total energy = -1.2572124573752175

Attempting to perform relaxation using initial lattice constant guess of a = 7.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.8010023817885603, total energy = -1.2572124573752195

Attempting to perform relaxation using initial lattice constant guess of a = 7.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8010023985756476, total energy = -1.2572124573752168

Attempting to perform relaxation using initial lattice constant guess of a = 7.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8010023782029707, total energy = -1.2572124573752188

Attempting to perform relaxation using initial lattice constant guess of a = 7.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.801002375781536, total energy = -1.2572124573752168

Attempting to perform relaxation using initial lattice constant guess of a = 7.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 41
         Function evaluations: 87
Results for this minimization:
  a = 2.8010024142218803, total energy = -1.2572124573752144

Attempting to perform relaxation using initial lattice constant guess of a = 7.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.8010023805516395, total energy = -1.2572124573752193

Attempting to perform relaxation using initial lattice constant guess of a = 7.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.8010023724287656, total energy = -1.2572124573752161

Attempting to perform relaxation using initial lattice constant guess of a = 8.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8010023951530414, total energy = -1.2572124573752204

Attempting to perform relaxation using initial lattice constant guess of a = 8.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.8010024040704593, total energy = -1.257212457375216

Attempting to perform relaxation using initial lattice constant guess of a = 8.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8010024090297576, total energy = -1.257212457375218

Attempting to perform relaxation using initial lattice constant guess of a = 8.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8010023934766517, total energy = -1.2572124573752168

Attempting to perform relaxation using initial lattice constant guess of a = 8.5 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8500000000000156 Angstroms and c = -1.3880441875771599 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 8.625 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8625000000000078 Angstroms and c = -1.4084566021003402 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 8.75 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.875 Angstroms and c = -1.4288690166235205 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 8.875 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.875 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8874999999999922 Angstroms and c = -1.449281431146701 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.0 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9000000000000234 Angstroms and c = -1.469693845669945 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.125 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.125 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9125000000000156 Angstroms and c = -1.4901062601931256 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.25 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9250000000000078 Angstroms and c = -1.510518674716306 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.375 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9375 Angstroms and c = -1.5309310892394863 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.5 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9499999999999922 Angstroms and c = -1.5513435037626666 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.625 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9625000000000234 Angstroms and c = -1.5717559182859109 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.75 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9750000000000156 Angstroms and c = -1.5921683328090912 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 9.875 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.875 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9875000000000078 Angstroms and c = -1.6125807473322717 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 10.0 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -1.0 Angstroms and c = -1.632993161855452 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 10.125 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.125 Angstroms
Exception message:
Attempted to evaluate energy at a = -1.0124999999999922 Angstroms and c = -1.6534055763786324 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 10.25 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -1.0250000000000234 Angstroms and c = -1.6738179909018767 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 10.375 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -1.0375000000000156 Angstroms and c = -1.694230405425057 Angstroms; the model cutoff was estimated to be 10.263199995271899 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


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


Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 3.6592142109672303 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 67
         Function evaluations: 148
Results for this minimization:
  a = 2.8009837486852183, c = 4.574078587640059, total energy = -1.257212459540976

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 3.887915099152682 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 71
         Function evaluations: 152
Results for this minimization:
  a = 2.8009837779460987, c = 4.574078595728446, total energy = -1.2572124595409755

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 4.116615987338134 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 77
         Function evaluations: 159
Results for this minimization:
  a = 2.8009837481771847, c = 4.57407856652889, total energy = -1.2572124595409775

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 4.345316875523586 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 71
         Function evaluations: 152
Results for this minimization:
  a = 2.8009837695289272, c = 4.5740785550861816, total energy = -1.2572124595409768

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 4.574017763709037 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 66
         Function evaluations: 143
Results for this minimization:
  a = 2.80098375849928, c = 4.5740786444932775, total energy = -1.2572124595409742

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 4.802718651894489 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 71
         Function evaluations: 149
Results for this minimization:
  a = 2.800983773754492, c = 4.574078609178359, total energy = -1.2572124595409786

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 5.031419540079941 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 75
         Function evaluations: 158
Results for this minimization:
  a = 2.8009837757513933, c = 4.5740785049758745, total energy = -1.2572124595409757

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 5.260120428265393 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 76
         Function evaluations: 163
Results for this minimization:
  a = 2.8009837620241083, c = 4.5740785318153705, total energy = -1.2572124595409773

Attempting to perform relaxation using initial lattice constant guess of a = [2.8010024] Angstroms and c = 5.488821316450844 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -1.257212
         Iterations: 71
         Function evaluations: 151
Results for this minimization:
  a = 2.8009837694478446, c = 4.574078550828345, total energy = -1.2572124595409775

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

 Final lattice Constants:
   a = 2.800983773754492 Angstroms, c = 4.574078609178359 Angstroms, c/a = 1.633026

 Total energy: -1.2572124595409786 eV

 Cohesive energy: -0.31430311488524465 eV/atom

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