Element = Lattice = Model = Element: Si
Lattice: hcp
Model: Tersoff_LAMMPS_Tersoff_1994_SiC__MO_794973922560_000
Computed model cutoff of 3.000000004544875 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: -15.470794
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.7559370741248164, total energy = -15.470794098004083

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: -15.470794
         Iterations: 40
         Function evaluations: 82
Results for this minimization:
  a = 2.7559370769420632, total energy = -15.470794098004083

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: -15.470794
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.7559370803646743, total energy = -15.470794098004081

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: -15.470794
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.755937078408902, total energy = -15.470794098004085

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: -15.470794
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 2.7559370756149324, total energy = -15.470794098004081

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: -15.470794
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.7559370826929825, total energy = -15.470794098004077

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: -15.470794
         Iterations: 36
         Function evaluations: 74
Results for this minimization:
  a = 2.7559370795264844, total energy = -15.470794098004076

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: -15.470794
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.7559370803646743, total energy = -15.470794098004077

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: -15.470794
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.755937069654466, total energy = -15.470794098004074

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: -15.470794
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.755937074497343, total energy = -15.470794098004077

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: -15.470794
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.755937076732517, total energy = -15.470794098004083

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: -15.470794
         Iterations: 34
         Function evaluations: 70
Results for this minimization:
  a = 2.755937078420538, total energy = -15.470794098004083

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: -15.470794
         Iterations: 35
         Function evaluations: 72
Results for this minimization:
  a = 2.755937078036368, total energy = -15.470794098004077

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: -15.470794
         Iterations: 32
         Function evaluations: 67
Results for this minimization:
  a = 2.7559370795264835, total energy = -15.47079409800408

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: -15.470794
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.755937080457807, total energy = -15.470794098004086

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: -15.470794
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.7559370759874575, total energy = -15.470794098004077

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: -15.470794
         Iterations: 36
         Function evaluations: 74
Results for this minimization:
  a = 2.755937075614929, total energy = -15.470794098004074

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: -15.470794
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.7559370803646743, total energy = -15.47079409800408

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 = [2.75593708] Angstroms and c = 3.6003411255131823 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -17.243921
         Iterations: 78
         Function evaluations: 164
Results for this minimization:
  a = 3.5692959579957133, c = 2.998595975068626, total energy = -17.243921370658995

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 3.825362445857756 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -17.243921
         Iterations: 80
         Function evaluations: 173
Results for this minimization:
  a = 3.569295927701151, c = 2.99859599145688, total energy = -17.243921370659177

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.05038376620233 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 69
         Function evaluations: 152
Results for this minimization:
  a = 2.7559336663148697, c = 4.50043748585129, total energy = -15.470794098675313

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.275405086546904 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 64
         Function evaluations: 144
Results for this minimization:
  a = 2.7559336629715547, c = 4.500437432805633, total energy = -15.470794098675297

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.500426406891478 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 67
         Function evaluations: 146
Results for this minimization:
  a = 2.7559337197499536, c = 4.5004373489869005, total energy = -15.4707940986754

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.725447727236052 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 68
         Function evaluations: 148
Results for this minimization:
  a = 2.7559336882513277, c = 4.500437412109481, total energy = -15.470794098675457

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.950469047580626 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 81
         Function evaluations: 165
Results for this minimization:
  a = 2.7559337277111853, c = 4.500437359617995, total energy = -15.470794098675453

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 5.1754903679252 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 75
         Function evaluations: 158
Results for this minimization:
  a = 2.7559337388830025, c = 4.500437368381453, total energy = -15.47079409867548

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 5.4005116882697735 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 107
         Function evaluations: 216
Results for this minimization:
  a = 2.755933713067957, c = 4.500437404919227, total energy = -15.470794098675398