Element = Lattice = Model = Element: Cu
Lattice: hcp
Model: MEAM_LAMMPS_JelinekGrohHorstemeyer_2012_AlSiMgCuFe__MO_262519520678_000
Computed model cutoff of 5.000000004544876 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: -14.108361
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.5613028269261156, total energy = -14.1083614617924

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: -14.108361
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 2.5613028276711707, total energy = -14.108361461792395

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: -14.108361
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.561302825808525, total energy = -14.108361461792397

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: -14.108361
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.5613028207211803, total energy = -14.1083614617924

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: -14.108361
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.5613028332591083, total energy = -14.108361461792398

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: -14.108361
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.5613028332591075, total energy = -14.108361461792404

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: -14.108361
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.56130283260718, total energy = -14.108361461792402

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: -14.108361
         Iterations: 35
         Function evaluations: 75
Results for this minimization:
  a = 2.561302830465138, total energy = -14.1083614617924

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: -14.108361
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.561302825808527, total energy = -14.108361461792397

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: -14.108361
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.561302848556079, total energy = -14.108361461792391

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: -14.108361
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.561302817612887, total energy = -14.108361461792391

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: -14.108361
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.5613028313673563, total energy = -14.1083614617924

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: -14.108361
         Iterations: 32
         Function evaluations: 67
Results for this minimization:
  a = 2.561302825808525, total energy = -14.1083614617924

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: -14.108361
         Iterations: 32
         Function evaluations: 67
Results for this minimization:
  a = 2.5613028322812177, total energy = -14.108361461792398

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: -14.108361
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.561302821105346, total energy = -14.108361461792398

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: -14.108361
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.5613028272986407, total energy = -14.1083614617924

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: -14.108361
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.561302833259105, total energy = -14.108361461792404

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: -14.108361
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.561302832327783, total energy = -14.108361461792398

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: -14.108361
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 2.5613028332591057, total energy = -14.108361461792402

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: -14.108361
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5613028450636177, total energy = -14.108361461792393

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: -14.108361
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.561302833259105, total energy = -14.108361461792402

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: -14.108361
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.561302830278871, total energy = -14.108361461792395

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: -14.108361
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5613028332591057, total energy = -14.108361461792398

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: -14.108361
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.561302839592096, total energy = -14.108361461792398

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: -14.108361
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.5613028269261116, total energy = -14.108361461792398

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: -14.108361
         Iterations: 39
         Function evaluations: 83
Results for this minimization:
  a = 2.5613028364721693, total energy = -14.1083614617924

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: -14.108361
         Iterations: 37
         Function evaluations: 81
Results for this minimization:
  a = 2.5613028366817128, total energy = -14.1083614617924

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: -14.108361
         Iterations: 37
         Function evaluations: 80
Results for this minimization:
  a = 2.5613028332591057, total energy = -14.108361461792395

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: -14.108361
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.5613028306048324, total energy = -14.108361461792397

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: -14.108361
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.561302819941191, total energy = -14.108361461792391

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: -14.108361
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.561302826390604, total energy = -14.1083614617924

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: -14.108361
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.561302832351063, total energy = -14.108361461792402

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: -14.108361
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.5613028332591057, total energy = -14.108361461792404

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: -14.108361
         Iterations: 38
         Function evaluations: 83
Results for this minimization:
  a = 2.5613028214313043, total energy = -14.108361461792393

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


Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 3.3460720097224943 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 74
         Function evaluations: 158
Results for this minimization:
  a = 2.5537442767284375, c = 4.2074198891824715, total energy = -14.109621116071613

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 3.55520151033015 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 75
         Function evaluations: 152
Results for this minimization:
  a = 2.5537443042881995, c = 4.207419847208616, total energy = -14.109621116071612

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 3.7643310109378056 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 72
         Function evaluations: 148
Results for this minimization:
  a = 2.5537442970982207, c = 4.207419848744788, total energy = -14.109621116071612

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 3.9734605115454613 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 65
         Function evaluations: 139
Results for this minimization:
  a = 2.5537442901758345, c = 4.2074198954144455, total energy = -14.109621116071617

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 4.182590012153117 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 68
         Function evaluations: 145
Results for this minimization:
  a = 2.5537442977216513, c = 4.207419876603601, total energy = -14.109621116071612

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 4.391719512760773 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 65
         Function evaluations: 149
Results for this minimization:
  a = 2.55374429667602, c = 4.207419875004451, total energy = -14.109621116071615

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 4.600849013368428 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 65
         Function evaluations: 141
Results for this minimization:
  a = 2.5537443020369732, c = 4.207419846937809, total energy = -14.109621116071608

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 4.809978513976084 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 68
         Function evaluations: 144
Results for this minimization:
  a = 2.5537442843576805, c = 4.207419875460751, total energy = -14.109621116071615

Attempting to perform relaxation using initial lattice constant guess of a = [2.56130283] Angstroms and c = 5.01910801458374 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.109621
         Iterations: 75
         Function evaluations: 156
Results for this minimization:
  a = 2.5537442906089964, c = 4.207419879212942, total energy = -14.109621116071613

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

 Final lattice Constants:
   a = 2.5537442901758345 Angstroms, c = 4.2074198954144455 Angstroms, c/a = 1.647549

 Total energy: -14.109621116071617 eV

 Cohesive energy: -3.5274052790179042 eV/atom

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