Element = Lattice = Model = Element: P
Lattice: hcp
Model: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Computed model cutoff of 7.62608999520541 Angstroms
Computed isolated atomic energy of 0.0 eV for species P

==============================================================================
==============================================================================
 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: -167.557447
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.081295448541644, total energy = -167.55744746645738

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: -167.557447
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.0812954506604, total energy = -167.55744746645792

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: -167.557447
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.0812954533612356, total energy = -167.5574474664582

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: -167.557447
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.0812954543391275, total energy = -167.55744746645814

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: -167.557447
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.0812954497523624, total energy = -167.55744746645806

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: -167.557447
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.0812954537803314, total energy = -167.55744746645826

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: -167.557447
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.0812954507768158, total energy = -167.55744746645792

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: -167.557447
         Iterations: 32
         Function evaluations: 68
Results for this minimization:
  a = 2.081295484676957, total energy = -167.5574474664568

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: -167.557447
         Iterations: 31
         Function evaluations: 67
Results for this minimization:
  a = 2.0812954482622446, total energy = -167.5574474664578

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: -167.557447
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.0812954622204405, total energy = -167.5574474664581

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: -167.557447
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.0812954506604, total energy = -167.55744746645811

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: -167.557447
         Iterations: 35
         Function evaluations: 77
Results for this minimization:
  a = 2.081295471638441, total energy = -167.55744746645772

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: -167.557447
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.081295456388034, total energy = -167.5574474664576

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: -167.557447
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.0812954661581893, total energy = -167.5574474664581

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: -167.557447
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.081295454339124, total energy = -167.55744746645811

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: -167.557447
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.0812954452354444, total energy = -167.5574474664578

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: -167.557447
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.0812954522669296, total energy = -167.55744746645743

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: -167.557447
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.0812954381108284, total energy = -167.55744746645775

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: -167.557447
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.0812954537803288, total energy = -167.5574474664582

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: -167.557447
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.0812954802066077, total energy = -167.5574474664578

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: -167.557447
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.081295450776815, total energy = -167.55744746645786

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: -167.557447
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.081295443931592, total energy = -167.5574474664575

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: -167.557447
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.081295484676957, total energy = -167.55744746645675

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: -167.557447
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.0812954675406163, total energy = -167.55744746645797

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: -167.557447
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.0812954482622428, total energy = -167.55744746645777

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: -167.557447
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.081295466376472, total energy = -167.55744746645792

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: -167.557447
         Iterations: 37
         Function evaluations: 76
Results for this minimization:
  a = 2.081295449752357, total energy = -167.5574474664581

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: -167.557447
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.081295471638441, total energy = -167.55744746645775

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: -167.557447
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.081295486912126, total energy = -167.5574474664575

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: -167.557447
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.081295457365921, total energy = -167.5574474664579

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: -167.557447
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.081295471638443, total energy = -167.55744746645783

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: -167.557447
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.081295454877541, total energy = -167.55744746645811

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: -167.557447
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.0812954549328424, total energy = -167.55744746645792

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: -167.557447
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.08129547935095, total energy = -167.55744746645746

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: -167.557447
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.0812954661581875, total energy = -167.55744746645803

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: -167.557447
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.08129546196433, total energy = -167.55744746645775

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: -167.557447
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.0812954543391204, total energy = -167.5574474664582

Attempting to perform relaxation using initial lattice constant guess of a = 5.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -167.557447
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.0812954653811175, total energy = -167.55744746645783

Attempting to perform relaxation using initial lattice constant guess of a = 5.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -167.557447
         Iterations: 41
         Function evaluations: 89
Results for this minimization:
  a = 2.081295445235439, total energy = -167.55744746645786

Attempting to perform relaxation using initial lattice constant guess of a = 5.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -167.557447
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.0812954675406194, total energy = -167.55744746645786

Attempting to perform relaxation using initial lattice constant guess of a = 6.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -167.557447
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.0812954902648837, total energy = -167.55744746645703

Attempting to perform relaxation using initial lattice constant guess of a = 6.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -167.557447
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.081295456970105, total energy = -167.5574474664579

Attempting to perform relaxation using initial lattice constant guess of a = 6.25 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.625 Angstroms and c = -1.0206207261596576 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 6.375 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6375000000000028 Angstroms and c = -1.0410331406828552 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 6.5 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6500000000000128 Angstroms and c = -1.0614455552060647 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 6.625 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6625000000000156 Angstroms and c = -1.0818579697292625 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 6.75 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6750000000000078 Angstroms and c = -1.1022703842524428 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 6.875 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.875 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.6875 Angstroms and c = -1.1226827987756234 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.0 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7000000000000028 Angstroms and c = -1.143095213298821 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.125 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.125 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7125000000000128 Angstroms and c = -1.1635076278220304 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.25 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7250000000000156 Angstroms and c = -1.1839200423452283 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.375 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7375000000000078 Angstroms and c = -1.2043324568684086 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.5 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.75 Angstroms and c = -1.224744871391589 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.625 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7624999999999922 Angstroms and c = -1.2451572859147695 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


Attempting to perform relaxation using initial lattice constant guess of a = 7.75 Angstroms (c/a fixed at sqrt(8/3))

Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.7750000000000234 Angstroms and c = -1.2655697004380135 Angstroms; the model cutoff was estimated to be 7.62608999520541 Angstroms.  This may mean that the model does not possess close-range repulsive forces to prevent system collapse.  In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff...
Continuing...


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


Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 2.7189929950592973 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 68
         Function evaluations: 148
Results for this minimization:
  a = 2.0812816045989684, c = 3.3987864465035154, total energy = -167.55744775510365

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 2.8889300572505032 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 71
         Function evaluations: 153
Results for this minimization:
  a = 2.0812816187314715, c = 3.3987864397949226, total energy = -167.55744775510362

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 3.058867119441709 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 71
         Function evaluations: 148
Results for this minimization:
  a = 2.0812816039342596, c = 3.398786431468513, total energy = -167.5574477551035

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 3.228804181632915 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 65
         Function evaluations: 146
Results for this minimization:
  a = 2.081281608198041, c = 3.398786512714233, total energy = -167.55744775510277

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 3.398741243824121 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 68
         Function evaluations: 144
Results for this minimization:
  a = 2.0812815976774863, c = 3.398786433200285, total energy = -167.55744775510317

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 3.568678306015327 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 70
         Function evaluations: 144
Results for this minimization:
  a = 2.0812816200484914, c = 3.3987864189288444, total energy = -167.5574477551035

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 3.738615368206533 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 70
         Function evaluations: 149
Results for this minimization:
  a = 2.081281617316848, c = 3.3987864881202396, total energy = -167.55744775510354

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 3.908552430397739 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 73
         Function evaluations: 157
Results for this minimization:
  a = 2.0812816197502864, c = 3.398786444181234, total energy = -167.5574477551035

Attempting to perform relaxation using initial lattice constant guess of a = [2.08129545] Angstroms and c = 4.078489492588945 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -167.557448
         Iterations: 69
         Function evaluations: 149
Results for this minimization:
  a = 2.0812816083922066, c = 3.3987864243560493, total energy = -167.55744775510357

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

 Final lattice Constants:
   a = 2.0812816045989684 Angstroms, c = 3.3987864465035154 Angstroms, c/a = 1.633026

 Total energy: -167.55744775510365 eV

 Cohesive energy: -41.88936193877591 eV/atom

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