Element = Lattice = Model = Element: Si
Lattice: hcp
Model: Sim_LAMMPS_EDIP_JiangMorganSzlufarska_2012_SiC__SM_435704953434_000
Computed model cutoff of 2.933722001612209 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: 0.000000
         Iterations: 39
         Function evaluations: 110
Results for this minimization:
  a = 3.350000000000005, total energy = 0.0

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: -15.679098
         Iterations: 40
         Function evaluations: 85
Results for this minimization:
  a = 2.7855366898700584, total energy = -15.679097508314998

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: -15.679098
         Iterations: 42
         Function evaluations: 89
Results for this minimization:
  a = 2.7855366898002103, total energy = -15.67909750831502

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: -15.679098
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.7855366909294457, total energy = -15.679097508315026

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: -15.679098
         Iterations: 41
         Function evaluations: 86
Results for this minimization:
  a = 2.7855366938514674, total energy = -15.679097508314978

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: -15.679098
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.7855366887524746, total energy = -15.679097508314976

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: -15.679098
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.785536692943424, total energy = -15.679097508315014

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: -15.679098
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 2.785536692943424, total energy = -15.67909750831501

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: -15.679098
         Iterations: 35
         Function evaluations: 72
Results for this minimization:
  a = 2.785536692291501, total energy = -15.679097508315015

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: -15.679098
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.785536691755988, total energy = -15.679097508315012

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: -15.679098
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.7855366898700593, total energy = -15.679097508315

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: -15.679098
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.785536691581364, total energy = -15.679097508315012

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: -15.679098
         Iterations: 34
         Function evaluations: 71
Results for this minimization:
  a = 2.7855366898002103, total energy = -15.679097508315017

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: -15.679098
         Iterations: 32
         Function evaluations: 67
Results for this minimization:
  a = 2.7855366929434244, total energy = -15.679097508315

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: -15.679098
         Iterations: 33
         Function evaluations: 69
Results for this minimization:
  a = 2.7855366909294386, total energy = -15.67909750831502

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: -15.679098
         Iterations: 33
         Function evaluations: 69
Results for this minimization:
  a = 2.785536691505695, total energy = -15.679097508315014

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: -15.679098
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.7855366904288523, total energy = -15.679097508315005

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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.125, total energy = 0.0

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 = [2.78553669] Angstroms and c = 3.6390098947081992 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.217475
         Iterations: 77
         Function evaluations: 163
Results for this minimization:
  a = 3.4568852709983893, c = 3.0254476890725774, total energy = -16.217475170253685

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 3.866448013127462 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.240494
         Iterations: 84
         Function evaluations: 179
Results for this minimization:
  a = 3.549251770633128, c = 2.8800913450531804, total energy = -16.240493688557212

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 4.093886131546725 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -16.240494
         Iterations: 87
         Function evaluations: 178
Results for this minimization:
  a = 3.5492517747812915, c = 2.8800913494645406, total energy = -16.240493688557223

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 4.321324249965987 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.679098
         Iterations: 69
         Function evaluations: 148
Results for this minimization:
  a = 2.785537974161344, c = 4.548758186478203, total energy = -15.679097508416175

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 4.548762368385249 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.679098
         Iterations: 72
         Function evaluations: 149
Results for this minimization:
  a = 2.785537979535274, c = 4.54875816767685, total energy = -15.679097508416177

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 4.7762004868045125 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.624447
         Iterations: 92
         Function evaluations: 203
Results for this minimization:
  a = 2.5343927692898207, c = 5.087133583833925, total energy = -15.624447155357005

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 5.003638605223776 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.740910
         Iterations: 79
         Function evaluations: 161
Results for this minimization:
  a = 2.5350677143765328, c = 4.955014783243557, total energy = -15.740909709161665

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 5.231076723643038 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.624447
         Iterations: 88
         Function evaluations: 212
Results for this minimization:
  a = 2.534392768384599, c = 5.728431472387788, total energy = -15.624447155357002

Attempting to perform relaxation using initial lattice constant guess of a = [2.78553669] Angstroms and c = 5.4585148420623 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -15.624447
         Iterations: 84
         Function evaluations: 215
Results for this minimization:
  a = 2.5343927662927435, c = 5.978493196962901, total energy = -15.624447155356998