Element = Lattice = Model = Element: C
Lattice: hcp
Model: MEAM_LAMMPS_LeeLee_2005_C__MO_996970420049_000
Computed model cutoff of 2.750000008791712 Angstroms
Computed isolated atomic energy of 0.0 eV for species C

==============================================================================
==============================================================================
 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: -10.116333
         Iterations: 40
         Function evaluations: 82
Results for this minimization:
  a = 2.3875895440578487, total energy = -10.116332815209928

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: -10.116333
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.387589537142776, total energy = -10.116332815209924

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: -10.116333
         Iterations: 38
         Function evaluations: 78
Results for this minimization:
  a = 2.3875895366072655, total energy = -10.116332815209933

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: -10.116333
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.3875895367935343, total energy = -10.11633281520992

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: -10.116333
         Iterations: 36
         Function evaluations: 79
Results for this minimization:
  a = 2.387589544057848, total energy = -10.11633281520992

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: -10.116333
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.3875895356759433, total energy = -10.116332815209923

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: -10.116333
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.387589541822672, total energy = -10.116332815209919

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: -10.116333
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.3875895437086, total energy = -10.11633281520992

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: -10.116333
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.3875895321369183, total energy = -10.116332815209924

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: -10.116333
         Iterations: 32
         Function evaluations: 69
Results for this minimization:
  a = 2.387589539214969, total energy = -10.11633281520993

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: -10.116333
         Iterations: 32
         Function evaluations: 70
Results for this minimization:
  a = 2.3875895339995625, total energy = -10.116332815209923

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: -10.116333
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.3875895409844814, total energy = -10.116332815209923

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: -10.116333
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.3875895366072655, total energy = -10.116332815209926

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: -10.116333
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.387589530576952, total energy = -10.116332815209915

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: -10.116333
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.3875895388424393, total energy = -10.116332815209919

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: -10.116333
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.3875895333592774, total energy = -10.116332815209924

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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.0, total energy = 0.0

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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.125, total energy = 0.0

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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.25, total energy = 0.0

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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.375, total energy = 0.0

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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.5, total energy = 0.0

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 3.119133909277834 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.639649
         Iterations: 76
         Function evaluations: 160
Results for this minimization:
  a = 2.753680003781998, c = 2.4516927806834206, total energy = -16.63964887409433

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 3.3140797786076988 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.639649
         Iterations: 67
         Function evaluations: 146
Results for this minimization:
  a = 2.7536800089504245, c = 2.4516927873585734, total energy = -16.639648874094327

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 3.5090256479375634 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.639649
         Iterations: 79
         Function evaluations: 161
Results for this minimization:
  a = 2.7536800109549895, c = 2.4516927845364123, total energy = -16.639648874094327

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 3.703971517267428 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.639649
         Iterations: 82
         Function evaluations: 168
Results for this minimization:
  a = 2.7536800174005096, c = 2.451692775607169, total energy = -16.639648874094323

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 3.898917386597293 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.179473
         Iterations: 86
         Function evaluations: 179
Results for this minimization:
  a = 2.238928571617126, c = 4.774928249700696, total energy = -11.17947262319354

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 4.0938632559271575 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.179473
         Iterations: 79
         Function evaluations: 161
Results for this minimization:
  a = 2.238928568970585, c = 4.774928249776371, total energy = -11.179472623193542

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 4.288809125257022 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.179473
         Iterations: 67
         Function evaluations: 142
Results for this minimization:
  a = 2.2389285708322726, c = 4.7749282544259, total energy = -11.179472623193538

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 4.483754994586887 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.312230
         Iterations: 77
         Function evaluations: 178
Results for this minimization:
  a = 2.4428244709303133, c = 4.791035071158149, total energy = -11.312229982671468

Attempting to perform relaxation using initial lattice constant guess of a = [2.38758954] Angstroms and c = 4.6787008639167516 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -11.312230
         Iterations: 78
         Function evaluations: 173
Results for this minimization:
  a = 2.4428244830269756, c = 4.843676970191836, total energy = -11.312229982671463