Element = Lattice = Model = Element: Cu
Lattice: hcp
Model: MEAM_LAMMPS_LeeShimBaskes_2003_Cu__MO_087820130586_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: -14.129949
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.555898463912312, total energy = -14.129948551787693

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: -14.129949
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.5558984748495273, total energy = -14.129948551787692

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: -14.129949
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.555898455902934, total energy = -14.129948551787688

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: -14.129949
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.5558984679170007, total energy = -14.129948551787693

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: -14.129949
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.555898463726046, total energy = -14.129948551787692

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: -14.129949
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.5558984775096194, total energy = -14.129948551787692

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: -14.129949
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.555898476578296, total energy = -14.129948551787695

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: -14.129949
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.555898469960084, total energy = -14.129948551787695

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: -14.129949
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.5558984696865106, total energy = -14.129948551787693

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: -14.129949
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.555898470990361, total energy = -14.129948551787693

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: -14.129949
         Iterations: 34
         Function evaluations: 71
Results for this minimization:
  a = 2.5558984749019142, total energy = -14.129948551787695

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: -14.129949
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.555898469034582, total energy = -14.129948551787695

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: -14.129949
         Iterations: 32
         Function evaluations: 69
Results for this minimization:
  a = 2.5558984708040953, total energy = -14.129948551787693

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: -14.129949
         Iterations: 34
         Function evaluations: 70
Results for this minimization:
  a = 2.555898476578296, total energy = -14.129948551787695

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: -14.129949
         Iterations: 33
         Function evaluations: 71
Results for this minimization:
  a = 2.5558984607458113, total energy = -14.12994855178769

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: -14.129949
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.5558984769508237, total energy = -14.129948551787692

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: -14.129949
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.5558984816772847, total energy = -14.12994855178769

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: -14.129949
         Iterations: 36
         Function evaluations: 79
Results for this minimization:
  a = 2.555898464634083, total energy = -14.129948551787693

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: -14.129949
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.5558984678238623, total energy = -14.129948551787695

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: -14.129949
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.5558984691393563, total energy = -14.129948551787697

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: -14.129949
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.555898462235927, total energy = -14.129948551787692

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: -14.129949
         Iterations: 36
         Function evaluations: 79
Results for this minimization:
  a = 2.555898480117318, total energy = -14.12994855178769

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: -14.129949
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.5558984740637243, total energy = -14.129948551787697

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: -14.129949
         Iterations: 37
         Function evaluations: 78
Results for this minimization:
  a = 2.555898459814486, total energy = -14.12994855178769

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: -14.129949
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 2.555898469686508, total energy = -14.129948551787695

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 3.33901177800111 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 66
         Function evaluations: 144
Results for this minimization:
  a = 2.5516839567894216, c = 4.187599158120143, total energy = -14.13035769351513

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 3.547700014126179 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 67
         Function evaluations: 145
Results for this minimization:
  a = 2.5516839780218925, c = 4.187599129218735, total energy = -14.130357693515133

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 3.7563882502512485 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 72
         Function evaluations: 154
Results for this minimization:
  a = 2.551683986347659, c = 4.187599089773169, total energy = -14.130357693515132

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 3.9650764863763177 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 68
         Function evaluations: 142
Results for this minimization:
  a = 2.551683953707478, c = 4.187599126152975, total energy = -14.130357693515132

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 4.173764722501387 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 68
         Function evaluations: 146
Results for this minimization:
  a = 2.5516839746419464, c = 4.187599122706165, total energy = -14.130357693515133

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 4.382452958626456 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 72
         Function evaluations: 149
Results for this minimization:
  a = 2.551683972819793, c = 4.187599114615349, total energy = -14.130357693515135

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 4.5911411947515255 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 66
         Function evaluations: 144
Results for this minimization:
  a = 2.5516839665585445, c = 4.187599131309166, total energy = -14.130357693515139

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 4.799829430876595 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 72
         Function evaluations: 150
Results for this minimization:
  a = 2.5516839645454246, c = 4.187599140041087, total energy = -14.130357693515133

Attempting to perform relaxation using initial lattice constant guess of a = [2.55589847] Angstroms and c = 5.008517667001664 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.130358
         Iterations: 74
         Function evaluations: 156
Results for this minimization:
  a = 2.551683959733845, c = 4.187599151378741, total energy = -14.130357693515132

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

 Final lattice Constants:
   a = 2.5516839665585445 Angstroms, c = 4.187599131309166 Angstroms, c/a = 1.641112

 Total energy: -14.130357693515139 eV

 Cohesive energy: -3.5325894233787847 eV/atom

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