Element = Lattice = Model = Element: Ag
Lattice: hcp
Model: Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Ag__MO_861893969202_003
Computed model cutoff of 8.666970004886416 Angstroms
Computed isolated atomic energy of 0.0 eV for species Ag

==============================================================================
==============================================================================
 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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296329498327, total energy = -11.903318267729517

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: -11.903318
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.8826296135783194, total energy = -11.903318267729558

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: -11.903318
         Iterations: 38
         Function evaluations: 84
Results for this minimization:
  a = 2.8826296627521515, total energy = -11.90331826772953

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: -11.903318
         Iterations: 38
         Function evaluations: 84
Results for this minimization:
  a = 2.8826296187937324, total energy = -11.903318267729517

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: -11.903318
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.88262961804867, total energy = -11.903318267729547

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.88262960035354, total energy = -11.903318267729514

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: -11.903318
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.8826296135783203, total energy = -11.903318267729547

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: -11.903318
         Iterations: 36
         Function evaluations: 79
Results for this minimization:
  a = 2.882629618048668, total energy = -11.903318267729565

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: -11.903318
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.8826296329498318, total energy = -11.903318267729519

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: -11.903318
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.882629671180622, total energy = -11.903318267729517

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: -11.903318
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.8826296135783203, total energy = -11.903318267729542

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: -11.903318
         Iterations: 36
         Function evaluations: 80
Results for this minimization:
  a = 2.8826296620070924, total energy = -11.903318267729519

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: -11.903318
         Iterations: 34
         Function evaluations: 75
Results for this minimization:
  a = 2.8826296627521515, total energy = -11.903318267729526

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: -11.903318
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.88262961357832, total energy = -11.903318267729551

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: -11.903318
         Iterations: 32
         Function evaluations: 70
Results for this minimization:
  a = 2.8826296515122523, total energy = -11.903318267729514

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: -11.903318
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 2.8826296620070933, total energy = -11.90331826772952

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: -11.903318
         Iterations: 33
         Function evaluations: 74
Results for this minimization:
  a = 2.8826296180486675, total energy = -11.903318267729567

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: -11.903318
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.8826296515762806, total energy = -11.903318267729514

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: -11.903318
         Iterations: 34
         Function evaluations: 75
Results for this minimization:
  a = 2.882629636069759, total energy = -11.903318267729565

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: -11.903318
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.882629657164216, total energy = -11.903318267729507

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: -11.903318
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.8826296135783194, total energy = -11.903318267729551

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: -11.903318
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.882629598135826, total energy = -11.903318267729517

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: -11.903318
         Iterations: 35
         Function evaluations: 77
Results for this minimization:
  a = 2.882629618048668, total energy = -11.903318267729563

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: -11.903318
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.88262961861328, total energy = -11.903318267729547

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: -11.903318
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.882629632949828, total energy = -11.903318267729508

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: -11.903318
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.882629651576282, total energy = -11.903318267729503

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: -11.903318
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.8826296323910334, total energy = -11.903318267729546

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: -11.903318
         Iterations: 37
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296064071357, total energy = -11.903318267729523

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: -11.903318
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.882629667012948, total energy = -11.903318267729494

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: -11.903318
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.8826296595158043, total energy = -11.9033182677295

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: -11.903318
         Iterations: 39
         Function evaluations: 87
Results for this minimization:
  a = 2.882629662007095, total energy = -11.90331826772951

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296555926065, total energy = -11.903318267729505

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: -11.903318
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.8826296627521515, total energy = -11.90331826772952

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: -11.903318
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.882629630016159, total energy = -11.903318267729508

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: -11.903318
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.882629613578318, total energy = -11.90331826772954

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296069659296, total energy = -11.903318267729501

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296492712538, total energy = -11.90331826772953

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.882629655985511, total energy = -11.90331826772953

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: -11.903318
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.882629610598082, total energy = -11.903318267729519

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: -11.903318
         Iterations: 40
         Function evaluations: 83
Results for this minimization:
  a = 2.882629636210912, total energy = -11.903318267729512

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296627521444, total energy = -11.903318267729501

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: -11.903318
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.8826296311803117, total energy = -11.90331826772952

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296236366034, total energy = -11.903318267729524

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: -11.903318
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.8826296318962683, total energy = -11.903318267729531

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: -11.903318
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.8826296378858327, total energy = -11.903318267729519

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: -11.903318
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.8826296162907887, total energy = -11.903318267729533

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: -11.903318
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.8826295867562264, total energy = -11.90331826772948

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: -11.903318
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.882629650295712, total energy = -11.9033182677295

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296135783176, total energy = -11.903318267729539

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.8826296124607262, total energy = -11.90331826772955

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: -11.903318
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.882629633415482, total energy = -11.903318267729528

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: -11.903318
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8826296137645793, total energy = -11.903318267729531

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: -11.903318
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.882629618048668, total energy = -11.903318267729558

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: -11.903318
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.8826296098530335, total energy = -11.903318267729526

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: -11.903318
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.88262961771105, total energy = -11.903318267729519

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: -11.903318
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.8826296135783105, total energy = -11.90331826772951

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: -11.903318
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.8826296329498247, total energy = -11.903318267729517

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: -11.903318
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.8826296124607325, total energy = -11.903318267729553

Attempting to perform relaxation using initial lattice constant guess of a = 8.25 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 = 8.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8249999999999922 Angstroms and c = -1.3472193585307353 Angstroms; the model cutoff was estimated to be 8.666970004886416 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 = 8.375 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 = 8.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8375000000000234 Angstroms and c = -1.3676317730539793 Angstroms; the model cutoff was estimated to be 8.666970004886416 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 = 8.5 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 8.666970004886416 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 8.666970004886416 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 8.666970004886416 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 = [2.88262962] Angstroms and c = 3.7658515635483742 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 72
         Function evaluations: 153
Results for this minimization:
  a = 2.882814349099634, c = 4.706711770713445, total energy = -11.903319199955494

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 4.001217286270148 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 76
         Function evaluations: 159
Results for this minimization:
  a = 2.8828143602554945, c = 4.706711682742029, total energy = -11.903319199955497

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 4.236583008991921 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 71
         Function evaluations: 152
Results for this minimization:
  a = 2.88281434607935, c = 4.706711717842053, total energy = -11.903319199955504

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 4.471948731713694 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 72
         Function evaluations: 148
Results for this minimization:
  a = 2.882814361978499, c = 4.706711604109189, total energy = -11.903319199955492

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 4.707314454435467 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 65
         Function evaluations: 139
Results for this minimization:
  a = 2.882814375492184, c = 4.706711673840644, total energy = -11.903319199955504

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 4.942680177157241 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 73
         Function evaluations: 152
Results for this minimization:
  a = 2.8828143785518985, c = 4.706711602682224, total energy = -11.903319199955511

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 5.178045899879015 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 71
         Function evaluations: 149
Results for this minimization:
  a = 2.882814430203827, c = 4.706711684925644, total energy = -11.903319199955448

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 5.413411622600788 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 70
         Function evaluations: 144
Results for this minimization:
  a = 2.8828144029744034, c = 4.706711689222232, total energy = -11.903319199955478

Attempting to perform relaxation using initial lattice constant guess of a = [2.88262962] Angstroms and c = 5.648777345322561 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.903319
         Iterations: 74
         Function evaluations: 155
Results for this minimization:
  a = 2.8828143572579035, c = 4.706711760653738, total energy = -11.9033191999555

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

 Final lattice Constants:
   a = 2.8828143785518985 Angstroms, c = 4.706711602682224 Angstroms, c/a = 1.632679

 Total energy: -11.903319199955511 eV

 Cohesive energy: -2.975829799988878 eV/atom

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