Element = Lattice = Model = Element: Ge
Lattice: hcp
Model: SNAP_ZuoChenLi_2019_Ge__MO_183216355174_000
Computed model cutoff of 5.499999809414158 Angstroms
Computed isolated atomic energy of -4.692499351845541 eV for species Ge

==============================================================================
==============================================================================
 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: 0.320362
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 3.24622750859708, total energy = 0.3203619865320917

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: 0.320362
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 3.246227513998747, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 3.2462275102734566, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 3.246227515302608, total energy = 0.3203619865320917

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: 0.320362
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 3.2462275031022765, total energy = 0.32036198653209524

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: 0.320362
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 3.246227505663412, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 3.2462275184690945, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 3.246227513998747, total energy = 0.32036198653209524

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: 0.320362
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 3.2462274909019504, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 3.246227501705291, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 3.246227501006797, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 3.246227509435265, total energy = 0.32036198653208814

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: 0.320362
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 3.24622749525588, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 3.2462275028228778, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 3.246227496862413, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 3.24622750246199, total energy = 0.32036198653209524

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: 0.320362
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 3.2462275050580507, total energy = 0.3203619865320917

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: 0.320362
         Iterations: 32
         Function evaluations: 68
Results for this minimization:
  a = 3.246227503987029, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 3.246227504452691, total energy = 0.3203619865320988

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: 0.320362
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 3.246227513998747, total energy = 0.32036198653209524

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: 0.320362
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 3.246227502822875, total energy = 0.3203619865320917

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: 0.320362
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 3.2462275027763097, total energy = 0.32036198653209524

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: 0.320362
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 3.246227513998747, total energy = 0.32036198653209524

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: 0.320362
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 3.2462275259196742, total energy = 0.32036198653210235

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: 0.000000
         Iterations: 37
         Function evaluations: 106
Results for this minimization:
  a = 6.200000000000006, total energy = 0.0

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: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.568749999999996, total energy = 0.0

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: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.7375000000000025, total energy = 0.0

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: 0.000000
         Iterations: 37
         Function evaluations: 107
Results for this minimization:
  a = 5.90625, total energy = 0.0

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: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.625000000000001, total energy = 0.0

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: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.781250000000003, total energy = 0.0

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: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 5.937499999999997, total energy = 0.0

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: 0.000000
         Iterations: 35
         Function evaluations: 102
Results for this minimization:
  a = 5.606250000000001, total energy = 0.0

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: -0.000000
         Iterations: 36
         Function evaluations: 102
Results for this minimization:
  a = 5.499999936670065, total energy = -2.842170943040401e-14

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: 0.000000
         Iterations: 34
         Function evaluations: 99
Results for this minimization:
  a = 5.637500000000001, total energy = 0.0

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: 0.000000
         Iterations: 33
         Function evaluations: 97
Results for this minimization:
  a = 5.5125, total energy = 0.0

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: 0.000000
         Iterations: 33
         Function evaluations: 97
Results for this minimization:
  a = 5.64375, total energy = 0.0

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: -0.000000
         Iterations: 34
         Function evaluations: 98
Results for this minimization:
  a = 5.4999999672174456, total energy = -4.263256414560601e-14