Element = Lattice = Model = Element: Si
Lattice: hcp
Model: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Computed model cutoff of 7.91117999494076 Angstroms
Computed isolated atomic energy of 0.0 eV for species Si

==============================================================================
==============================================================================
 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: -105.730856
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.159109830856325, total energy = -105.7308560540526

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: -105.730856
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.159109870716929, total energy = -105.73085605405315

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: -105.730856
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.159109875559807, total energy = -105.73085605405342

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: -105.730856
         Iterations: 36
         Function evaluations: 79
Results for this minimization:
  a = 2.159109891392295, total energy = -105.73085605405282

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: -105.730856
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.1591098874807373, total energy = -105.73085605405265

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: -105.730856
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.159109870856629, total energy = -105.73085605405346

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: -105.730856
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.1591098569333558, total energy = -105.73085605405292

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: -105.730856
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.1591098913922906, total energy = -105.7308560540529

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: -105.730856
         Iterations: 32
         Function evaluations: 70
Results for this minimization:
  a = 2.1591098308563232, total energy = -105.73085605405244

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: -105.730856
         Iterations: 32
         Function evaluations: 67
Results for this minimization:
  a = 2.159109871729742, total energy = -105.73085605405295

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: -105.730856
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 2.159109870716929, total energy = -105.73085605405315

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: -105.730856
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.1591098700650035, total energy = -105.73085605405309

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: -105.730856
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.159109875559807, total energy = -105.73085605405332

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: -105.730856
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.159109866386279, total energy = -105.73085605405316

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: -105.730856
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.1591098913922906, total energy = -105.73085605405285

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: -105.730856
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.1591098809352824, total energy = -105.73085605405322

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: -105.730856
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.15910988866817, total energy = -105.73085605405275

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: -105.730856
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.159109879139578, total energy = -105.73085605405319

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: -105.730856
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.1591098708566263, total energy = -105.73085605405339

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: -105.730856
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.1591098734410465, total energy = -105.73085605405336

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: -105.730856
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.1591098569333544, total energy = -105.73085605405286

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: -105.730856
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.159109865454954, total energy = -105.73085605405332

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: -105.730856
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.1591098913922906, total energy = -105.73085605405286

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: -105.730856
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.159109867387447, total energy = -105.73085605405323

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: -105.730856
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.1591098308563215, total energy = -105.7308560540524

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: -105.730856
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.1591098898556105, total energy = -105.73085605405315

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: -105.730856
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.1591098717297386, total energy = -105.73085605405319

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: -105.730856
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.1591098577482626, total energy = -105.73085605405319

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: -105.730856
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.159109870716924, total energy = -105.73085605405306

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: -105.730856
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.159109867736695, total energy = -105.73085605405322

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: -105.730856
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.1591098700650053, total energy = -105.7308560540532

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: -105.730856
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.159109870856624, total energy = -105.73085605405339

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: -105.730856
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.159109875559807, total energy = -105.73085605405335

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: -105.730856
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.159109875210555, total energy = -105.73085605405316

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: -105.730856
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.1591098663862773, total energy = -105.73085605405308

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: -105.730856
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.1591098936856747, total energy = -105.73085605405271

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: -105.730856
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.159109891392287, total energy = -105.73085605405274

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: -105.730856
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.1591098941862583, total energy = -105.73085605405264

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: -105.730856
         Iterations: 39
         Function evaluations: 80
Results for this minimization:
  a = 2.159109880935277, total energy = -105.73085605405318

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: -105.730856
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.1591098553501045, total energy = -105.73085605405292

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: -105.730856
         Iterations: 42
         Function evaluations: 90
Results for this minimization:
  a = 2.1591098830103785, total energy = -105.73085605405282

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: -105.730856
         Iterations: 41
         Function evaluations: 86
Results for this minimization:
  a = 2.1591098848439234, total energy = -105.73085605405325

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: -105.730856
         Iterations: 40
         Function evaluations: 82
Results for this minimization:
  a = 2.159109879139578, total energy = -105.73085605405325

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: -105.730856
         Iterations: 42
         Function evaluations: 88
Results for this minimization:
  a = 2.1591098821940227, total energy = -105.73085605405365

Attempting to perform relaxation using initial lattice constant guess of a = 6.5 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 = 6.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6500000000000128 Angstroms and c = -1.0614455552060647 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 6.625 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 = 6.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6625000000000156 Angstroms and c = -1.0818579697292625 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 6.75 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 = 6.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6750000000000078 Angstroms and c = -1.1022703842524428 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 6.875 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 = 6.875 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6875 Angstroms and c = -1.1226827987756234 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.0 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 = 7.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7000000000000028 Angstroms and c = -1.143095213298821 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.125 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 = 7.125 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7125000000000128 Angstroms and c = -1.1635076278220304 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.25 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 = 7.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7250000000000156 Angstroms and c = -1.1839200423452283 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.375 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 = 7.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7375000000000078 Angstroms and c = -1.2043324568684086 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.5 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 = 7.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.75 Angstroms and c = -1.224744871391589 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.625 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 = 7.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7624999999999922 Angstroms and c = -1.2451572859147695 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.75 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 = 7.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7750000000000234 Angstroms and c = -1.2655697004380135 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 7.875 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 = 7.875 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7875000000000156 Angstroms and c = -1.285982114961194 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = 8.0 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 = 8.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8000000000000078 Angstroms and c = -1.3063945294843744 Angstroms; the model cutoff was estimated to be 7.91117999494076 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 = [2.15910988] Angstroms and c = 2.820649338653896 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 70
         Function evaluations: 148
Results for this minimization:
  a = 2.159095525229443, c = 3.525858540452866, total energy = -105.73085623619198

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 2.9969399223197644 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 72
         Function evaluations: 155
Results for this minimization:
  a = 2.1590955084092416, c = 3.525858516847381, total energy = -105.7308562361919

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 3.1732305059856327 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 68
         Function evaluations: 145
Results for this minimization:
  a = 2.1590955148494433, c = 3.525858566406743, total energy = -105.73085623619221

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 3.349521089651501 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 67
         Function evaluations: 144
Results for this minimization:
  a = 2.1590955176985434, c = 3.5258585748459836, total energy = -105.73085623619218

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 3.5258116733173694 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 73
         Function evaluations: 154
Results for this minimization:
  a = 2.1590955336835576, c = 3.5258585417428328, total energy = -105.73085623619207

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 3.702102256983238 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 74
         Function evaluations: 155
Results for this minimization:
  a = 2.159095517852038, c = 3.525858577675116, total energy = -105.73085623619224

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 3.878392840649106 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 69
         Function evaluations: 144
Results for this minimization:
  a = 2.1590955137369527, c = 3.5258585530904867, total energy = -105.73085623619242

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 4.054683424314975 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 73
         Function evaluations: 155
Results for this minimization:
  a = 2.1590955236049796, c = 3.5258585589870206, total energy = -105.73085623619241

Attempting to perform relaxation using initial lattice constant guess of a = [2.15910988] Angstroms and c = 4.230974007980842 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -105.730856
         Iterations: 75
         Function evaluations: 155
Results for this minimization:
  a = 2.159095501827518, c = 3.5258585748798685, total energy = -105.73085623619227

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

 Final lattice Constants:
   a = 2.1590955137369527 Angstroms, c = 3.5258585530904867 Angstroms, c/a = 1.633026

 Total energy: -105.73085623619242 eV

 Cohesive energy: -26.432714059048106 eV/atom

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