Element = Lattice = Model = Element: Pt
Lattice: hcp
Model: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Computed model cutoff of 9.692979995310314 Angstroms
Computed isolated atomic energy of 0.0 eV for species Pt

==============================================================================
==============================================================================
 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: -104.591429
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.645384454727176, total energy = -104.59142856978197

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: -104.591429
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 2.6453844702802596, total energy = -104.59142856978222

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: -104.591429
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.645384479314089, total energy = -104.59142856978238

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: -104.591429
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.6453844796866224, total energy = -104.59142856978238

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: -104.591429
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.6453845024108906, total energy = -104.59142856978148

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: -104.591429
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.6453844576142744, total energy = -104.59142856978197

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: -104.591429
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.6453844361938543, total energy = -104.59142856978158

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: -104.591429
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.6453844783827662, total energy = -104.59142856978195

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: -104.591429
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.645384454727174, total energy = -104.59142856978202

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: -104.591429
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.6453844676027085, total energy = -104.59142856978245

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: -104.591429
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.64538447111845, total energy = -104.59142856978214

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: -104.591429
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.6453844829229634, total energy = -104.59142856978231

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: -104.591429
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.645384479314089, total energy = -104.59142856978241

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: -104.591429
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.6453844762872896, total energy = -104.59142856978205

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: -104.591429
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.645384479686617, total energy = -104.59142856978232

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: -104.591429
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.645384477032349, total energy = -104.59142856978211

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: -104.591429
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.645384502410887, total energy = -104.59142856978157

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: -104.591429
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.6453844783827662, total energy = -104.591428569782

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: -104.591429
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.6453844576142727, total energy = -104.59142856978202

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: -104.591429
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.6453844543546436, total energy = -104.59142856978174

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: -104.591429
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.64538448313251, total energy = -104.59142856978188

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: -104.591429
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.645384477032347, total energy = -104.59142856978221

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: -104.591429
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.6453844672068954, total energy = -104.59142856978225

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: -104.591429
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.6453844673000226, total energy = -104.5914285697824

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: -104.591429
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.6453844547271705, total energy = -104.5914285697819

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: -104.591429
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.6453844632953416, total energy = -104.59142856978205

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: -104.591429
         Iterations: 39
         Function evaluations: 81
Results for this minimization:
  a = 2.645384467602705, total energy = -104.5914285697824

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: -104.591429
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.64538449421525, total energy = -104.59142856978201

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: -104.591429
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.645384470280255, total energy = -104.59142856978211

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: -104.591429
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.6453844793140866, total energy = -104.59142856978245

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: -104.591429
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.645384482922965, total energy = -104.59142856978232

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: -104.591429
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.6453844874282333, total energy = -104.59142856978194

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: -104.591429
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.645384479314089, total energy = -104.5914285697824

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: -104.591429
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.645384467020626, total energy = -104.59142856978205

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: -104.591429
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.645384476287288, total energy = -104.59142856978205

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: -104.591429
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.6453844871604835, total energy = -104.5914285697818

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: -104.591429
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.6453844796866135, total energy = -104.59142856978232

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: -104.591429
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.6453844570787624, total energy = -104.59142856978166

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: -104.591429
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.645384476965405, total energy = -104.5914285697822

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: -104.591429
         Iterations: 40
         Function evaluations: 83
Results for this minimization:
  a = 2.6453844513976925, total energy = -104.59142856978188

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: -104.591429
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.645384502131483, total energy = -104.59142856978154

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: -104.591429
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.645384464226659, total energy = -104.59142856978222

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.6453844597563148, total energy = -104.59142856978187

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.6453845147043453, total energy = -104.59142856978144

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.6453844676027014, total energy = -104.59142856978232

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.6453844743547874, total energy = -104.59142856978228

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.64538445435464, total energy = -104.59142856978163

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.6453844754287275, total energy = -104.59142856978212

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.645384462270884, total energy = -104.59142856978173

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 39
         Function evaluations: 84
Results for this minimization:
  a = 2.6453844947842233, total energy = -104.5914285697818

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 41
         Function evaluations: 88
Results for this minimization:
  a = 2.6453844783827574, total energy = -104.59142856978205

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.6453844863339278, total energy = -104.59142856978197

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 41
         Function evaluations: 87
Results for this minimization:
  a = 2.6453844672068954, total energy = -104.59142856978227

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 40
         Function evaluations: 84
Results for this minimization:
  a = 2.645384492065936, total energy = -104.5914285697819

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

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 40
         Function evaluations: 87
Results for this minimization:
  a = 2.6453844882314876, total energy = -104.59142856978183

Attempting to perform relaxation using initial lattice constant guess of a = 7.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 40
         Function evaluations: 83
Results for this minimization:
  a = 2.645384459540937, total energy = -104.59142856978184

Attempting to perform relaxation using initial lattice constant guess of a = 8.0 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 = 8.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8000000000000078 Angstroms and c = -1.3063945294843744 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.125 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 = 8.125 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8125 Angstroms and c = -1.3268069440075547 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.25 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 = 8.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8249999999999922 Angstroms and c = -1.3472193585307353 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.375 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 = 8.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8375000000000234 Angstroms and c = -1.3676317730539793 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.5 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 = 8.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8500000000000156 Angstroms and c = -1.3880441875771599 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.625 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 = 8.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8625000000000078 Angstroms and c = -1.4084566021003402 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.75 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 = 8.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.875 Angstroms and c = -1.4288690166235205 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 8.875 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 = 8.875 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.8874999999999922 Angstroms and c = -1.449281431146701 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.0 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 = 9.0 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9000000000000234 Angstroms and c = -1.469693845669945 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.125 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 = 9.125 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9125000000000156 Angstroms and c = -1.4901062601931256 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.25 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 = 9.25 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9250000000000078 Angstroms and c = -1.510518674716306 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.375 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 = 9.375 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9375 Angstroms and c = -1.5309310892394863 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.5 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 = 9.5 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9499999999999922 Angstroms and c = -1.5513435037626666 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.625 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 = 9.625 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9625000000000234 Angstroms and c = -1.5717559182859109 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = 9.75 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 = 9.75 Angstroms
Exception message:
Attempted to evaluate energy at a = -0.9750000000000156 Angstroms and c = -1.5921683328090912 Angstroms; the model cutoff was estimated to be 9.692979995310314 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 = [2.64538447] Angstroms and c = 3.4559157968590792 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 71
         Function evaluations: 153
Results for this minimization:
  a = 2.645366905132255, c = 4.319952198035386, total energy = -104.5914287499579

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 3.671910534162772 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 73
         Function evaluations: 158
Results for this minimization:
  a = 2.645366879863424, c = 4.319952205139339, total energy = -104.59142874995804

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 3.8879052714664644 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 69
         Function evaluations: 148
Results for this minimization:
  a = 2.6453669150804835, c = 4.319952163499636, total energy = -104.59142874995774

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 4.103900008770157 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 65
         Function evaluations: 141
Results for this minimization:
  a = 2.645366879154135, c = 4.319952213786559, total energy = -104.59142874995817

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 4.3198947460738495 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 67
         Function evaluations: 141
Results for this minimization:
  a = 2.645366905633277, c = 4.3199522101343995, total energy = -104.59142874995828

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 4.535889483377542 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 71
         Function evaluations: 148
Results for this minimization:
  a = 2.6453669023194504, c = 4.319952201715429, total energy = -104.59142874995848

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 4.751884220681235 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 76
         Function evaluations: 158
Results for this minimization:
  a = 2.6453669023131785, c = 4.319952145262577, total energy = -104.59142874995808

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 4.967878957984928 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 76
         Function evaluations: 160
Results for this minimization:
  a = 2.6453668873932132, c = 4.3199522413603315, total energy = -104.59142874995814

Attempting to perform relaxation using initial lattice constant guess of a = [2.64538447] Angstroms and c = 5.18387369528862 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -104.591429
         Iterations: 73
         Function evaluations: 156
Results for this minimization:
  a = 2.645366908123196, c = 4.319952174887086, total energy = -104.59142874995828

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

 Final lattice Constants:
   a = 2.6453669023194504 Angstroms, c = 4.319952201715429 Angstroms, c/a = 1.633026

 Total energy: -104.59142874995848 eV

 Cohesive energy: -26.14785718748962 eV/atom

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