Element = Lattice = Model = Element: Cu
Lattice: hcp
Model: Sim_LAMMPS_MEAM_AsadiZaeemNouranian_2015_Cu__SM_239791545509_000
Computed model cutoff of 3.999999990463257 Angstroms
Computed isolated atomic energy of 0.0 eV for species Cu

==============================================================================
==============================================================================
 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: -14.146238
         Iterations: 38
         Function evaluations: 78
Results for this minimization:
  a = 2.561104411724959, total energy = -14.146237662598368

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: -14.146238
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.561104414612055, total energy = -14.146237662598368

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: -14.146238
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.561104414751753, total energy = -14.146237662598368

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: -14.146238
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.561104419548069, total energy = -14.14623766259837

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: -14.146238
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.5611044165678347, total energy = -14.146237662598367

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: -14.146238
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.561104410962437, total energy = -14.146237662598368

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: -14.146238
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5611044180113827, total energy = -14.146237662598368

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: -14.146238
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.5611044224351645, total energy = -14.146237662598367

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: -14.146238
         Iterations: 34
         Function evaluations: 70
Results for this minimization:
  a = 2.561104418151083, total energy = -14.146237662598368

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: -14.146238
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.561104423599318, total energy = -14.146237662598368

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: -14.146238
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.561104421317578, total energy = -14.14623766259837

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: -14.146238
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 2.5611044263932854, total energy = -14.146237662598367

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: -14.146238
         Iterations: 32
         Function evaluations: 66
Results for this minimization:
  a = 2.5611044112592936, total energy = -14.146237662598367

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: -14.146238
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.561104417196474, total energy = -14.146237662598372

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: -14.146238
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 2.5611044124409084, total energy = -14.14623766259837

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: -14.146238
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.5611044179880977, total energy = -14.146237662598368

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: -14.146238
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.561104419082403, total energy = -14.14623766259837

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: -14.146238
         Iterations: 35
         Function evaluations: 72
Results for this minimization:
  a = 2.561104417400202, total energy = -14.14623766259837

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: -14.146238
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.5611044120974844, total energy = -14.14623766259837

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: -14.146238
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.561104409582912, total energy = -14.146237662598367

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: -14.146238
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 2.561104416381567, total energy = -14.146237662598368

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: -14.146238
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.5611044052988263, total energy = -14.146237662598365

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: -14.146238
         Iterations: 36
         Function evaluations: 75
Results for this minimization:
  a = 2.5611044140532613, total energy = -14.146237662598367

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: -14.146238
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.56110441354103, total energy = -14.146237662598368

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: -14.146238
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.5611044052988285, total energy = -14.146237662598367

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.345812800063708 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 69
         Function evaluations: 150
Results for this minimization:
  a = 2.5582654920419707, c = 4.19147185682483, total energy = -14.146419906242988

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.55492610006769 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 70
         Function evaluations: 149
Results for this minimization:
  a = 2.5582655045186042, c = 4.191471881915428, total energy = -14.146419906242992

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.764039400071672 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 72
         Function evaluations: 153
Results for this minimization:
  a = 2.5582655048679985, c = 4.191471857287682, total energy = -14.146419906242992

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.973152700075654 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 68
         Function evaluations: 144
Results for this minimization:
  a = 2.5582654949545316, c = 4.1914718742681485, total energy = -14.146419906242992

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.182266000079636 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 67
         Function evaluations: 142
Results for this minimization:
  a = 2.558265494865487, c = 4.191471896893814, total energy = -14.14641990624299

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.391379300083618 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 69
         Function evaluations: 143
Results for this minimization:
  a = 2.5582655005313915, c = 4.191471906915918, total energy = -14.146419906242992

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.6004926000876 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 69
         Function evaluations: 146
Results for this minimization:
  a = 2.558265491737636, c = 4.19147190172561, total energy = -14.146419906242993

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.809605900091582 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 70
         Function evaluations: 150
Results for this minimization:
  a = 2.5582654923906656, c = 4.1914718722922775, total energy = -14.14641990624299

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 5.018719200095564 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 77
         Function evaluations: 159
Results for this minimization:
  a = 2.5582654844853483, c = 4.19147188006346, total energy = -14.14641990624299

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

 Final lattice Constants:
   a = 2.558265491737636 Angstroms, c = 4.19147190172561 Angstroms, c/a = 1.638404

 Total energy: -14.146419906242993 eV

 Cohesive energy: -3.5366049765607483 eV/atom

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