Element = Lattice = Model = Element: V
Lattice: hcp
Model: MEAM_LAMMPS_LeeBaskesKim_2001_V__MO_868364924829_001
Computed model cutoff of 3.5999999965727416 Angstroms
Computed isolated atomic energy of 0.0 eV for species V

==============================================================================
==============================================================================
 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: -20.905930
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.7060015980154306, total energy = -20.905930112760164

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: -20.905930
         Iterations: 39
         Function evaluations: 81
Results for this minimization:
  a = 2.706001596897841, total energy = -20.905930112760164

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: -20.905930
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.7060016038594767, total energy = -20.905930112760164

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: -20.905930
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.7060015827417434, total energy = -20.90593011276015

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: -20.905930
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.7060016036033656, total energy = -20.90593011276016

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: -20.905930
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.7060015971888807, total energy = -20.90593011276016

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: -20.905930
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.706001603603363, total energy = -20.90593011276016

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: -20.905930
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.706001606537029, total energy = -20.905930112760156

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: -20.905930
         Iterations: 36
         Function evaluations: 74
Results for this minimization:
  a = 2.7060015978291645, total energy = -20.905930112760164

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: -20.905930
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.706001604348422, total energy = -20.905930112760167

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: -20.905930
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.706001599831507, total energy = -20.905930112760164

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: -20.905930
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.7060016009025274, total energy = -20.90593011276016

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: -20.905930
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.706001598329749, total energy = -20.905930112760156

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: -20.905930
         Iterations: 32
         Function evaluations: 67
Results for this minimization:
  a = 2.706001607514917, total energy = -20.905930112760156

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: -20.905930
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 2.7060015990049573, total energy = -20.90593011276016

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: -20.905930
         Iterations: 33
         Function evaluations: 69
Results for this minimization:
  a = 2.706001606211067, total energy = -20.90593011276016

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: -20.905930
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.706001611845567, total energy = -20.90593011276016

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: -20.905930
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.7060016081668437, total energy = -20.905930112760156

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: -20.905930
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.706001619738527, total energy = -20.90593011276016

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: -20.905930
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.7060016044415525, total energy = -20.90593011276016

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: -20.905930
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.706001604907213, total energy = -20.90593011276016

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: -20.905930
         Iterations: 36
         Function evaluations: 75
Results for this minimization:
  a = 2.706001609610392, total energy = -20.90593011276016

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 3.535105692696685 = ([1.30639453] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 3.7560497984902277 = ([1.38804419] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 3.9769939042837703 = ([1.46969385] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 4.197938010077313 = ([1.5513435] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 4.418882115870856 = ([1.63299316] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 4.639826221664398 = ([1.71464282] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 4.86077032745794 = ([1.79629248] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 5.081714433251483 = ([1.87794214] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = [2.7060016] Angstroms and c = 5.3026585390450265 = ([1.95959179] * a) Angstroms

     Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms
     Exception message:
setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
     Continuing...


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

 Final lattice Constants:
   a = [2.7060016] Angstroms, c = [4.41888212] Angstroms, c/a = 1.632993

 Total energy: -20.905930112760167 eV

 Cohesive energy: -5.226482528190042 eV/atom

==============================================================================
==============================================================================