Element = Lattice = Model = Element: Si
Lattice: hcp
Model: Tersoff_LAMMPS_Tersoff_1989_SiC__MO_171585019474_003
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 = 2.7559370771050484, total energy = -15.470794098004081

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: 39
         Function evaluations: 80
Results for this minimization:
  a = 2.75593708071392, total energy = -15.470794098004081

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: 80
Results for this minimization:
  a = 2.7559370789676905, total energy = -15.47079409800408

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: 38
         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: 79
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: 79
Results for this minimization:
  a = 2.755937080271544, total energy = -15.470794098004083

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: 76
Results for this minimization:
  a = 2.755937080830336, total energy = -15.470794098004077

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: 73
Results for this minimization:
  a = 2.7559370793169364, total energy = -15.470794098004085

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: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.755937081575395, total energy = -15.470794098004076

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 = 2.7559370784554633, total energy = -15.470794098004076

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: 74
Results for this minimization:
  a = 2.7559370764181956, 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: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.7559370812959965, total energy = -15.470794098004081

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: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.7559370789676905, total energy = -15.470794098004092

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: 68
Results for this minimization:
  a = 2.7559370795264835, total energy = -15.470794098004083

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 = 2.755937075719703, total energy = -15.470794098004088

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: 69
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: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.755937080644072, total energy = -15.47079409800408

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: 70
Results for this minimization:
  a = 2.7559370791277615, total energy = -15.470794098004081

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 = 3.600341123566502 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -17.243921
         Iterations: 80
         Function evaluations: 170
Results for this minimization:
  a = 3.569295899069065, c = 2.9985959999061, total energy = -17.243921370659113

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 3.8253624437894085 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -17.243921
         Iterations: 79
         Function evaluations: 171
Results for this minimization:
  a = 3.569295925771255, c = 2.9985959898355645, total energy = -17.243921370659212

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.050383764012315 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 75
         Function evaluations: 160
Results for this minimization:
  a = 2.7559337191977793, c = 4.5004373537608355, total energy = -15.47079409867552

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.275405084235221 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 66
         Function evaluations: 140
Results for this minimization:
  a = 2.755933720177387, c = 4.500437377266751, total energy = -15.470794098675366

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.5004264044581275 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 66
         Function evaluations: 146
Results for this minimization:
  a = 2.7559337625255917, c = 4.500437260909038, total energy = -15.470794098675395

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.725447724681034 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 70
         Function evaluations: 150
Results for this minimization:
  a = 2.755933718311198, c = 4.500437401480952, total energy = -15.47079409867553

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 4.95046904490394 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 78
         Function evaluations: 162
Results for this minimization:
  a = 2.7559337262210697, c = 4.50043735718464, total energy = -15.470794098675452

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 5.175490365126846 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.470794
         Iterations: 80
         Function evaluations: 167
Results for this minimization:
  a = 2.7559337222299947, c = 4.500437377778601, total energy = -15.470794098675448

Attempting to perform relaxation using initial lattice constant guess of a = [2.75593708] Angstroms and c = 5.400511685349753 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -13.633387
         Iterations: 86
         Function evaluations: 202
Results for this minimization:
  a = 2.639117519906038, c = 5.921055933333852, total energy = -13.633386782106616