Element = Lattice = Model = Element: N
Lattice: hcp
Model: MEAM_LAMMPS_KimLee_2008_TiN__MO_070542625990_000
Computed model cutoff of 4.599999997057051 Angstroms
Computed isolated atomic energy of 0.0 eV for species N

==============================================================================
==============================================================================
 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: 41
         Function evaluations: 115
Results for this minimization:
  a = 5.75000000000001, 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: 0.000000
         Iterations: 41
         Function evaluations: 116
Results for this minimization:
  a = 4.668749999999999, total energy = 0.0

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: 0.000000
         Iterations: 41
         Function evaluations: 116
Results for this minimization:
  a = 5.1875, total energy = 0.0

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: -0.001542
         Iterations: 42
         Function evaluations: 92
Results for this minimization:
  a = 4.595287134428522, total energy = -0.0015415909661857302

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: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 5.025000000000008, total energy = 0.0

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: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 5.443750000000005, total energy = 0.0

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: 0.000000
         Iterations: 40
         Function evaluations: 113
Results for this minimization:
  a = 5.862499999999999, total energy = 0.0

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: -0.001542
         Iterations: 40
         Function evaluations: 86
Results for this minimization:
  a = 4.595287134696264, total energy = -0.0015415909661857282

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: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.100000000000007, total energy = 0.0

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: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.418750000000003, total energy = 0.0

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: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 4.8374999999999995, total energy = 0.0

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: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.106249999999995, total energy = 0.0

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: 0.000000
         Iterations: 39
         Function evaluations: 111
Results for this minimization:
  a = 5.375, total energy = 0.0

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: -0.001542
         Iterations: 38
         Function evaluations: 82
Results for this minimization:
  a = 4.595287134512913, total energy = -0.0015415909661857345

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: 0.000000
         Iterations: 38
         Function evaluations: 109
Results for this minimization:
  a = 4.812500000000009, total energy = 0.0

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: 0.000000
         Iterations: 38
         Function evaluations: 109
Results for this minimization:
  a = 5.03125, total energy = 0.0

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: 0.000000
         Iterations: 37
         Function evaluations: 106
Results for this minimization:
  a = 4.650000000000004, total energy = 0.0

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: 37
         Function evaluations: 106
Results for this minimization:
  a = 4.84375, 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: 37
         Function evaluations: 106
Results for this minimization:
  a = 5.037500000000003, 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: 37
         Function evaluations: 106
Results for this minimization:
  a = 5.231250000000006, 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: 36
         Function evaluations: 104
Results for this minimization:
  a = 4.7250000000000005, total energy = 0.0

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: 0.000000
         Iterations: 36
         Function evaluations: 104
Results for this minimization:
  a = 4.8937500000000025, total energy = 0.0

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: -0.001542
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 4.595287134696264, total energy = -0.0015415909661857313

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: 0.000000
         Iterations: 35
         Function evaluations: 101
Results for this minimization:
  a = 4.843750000000001, total energy = 0.0

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: -0.001542
         Iterations: 35
         Function evaluations: 76
Results for this minimization:
  a = 4.595287134684624, total energy = -0.0015415909661857313

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: 0.000000
         Iterations: 34
         Function evaluations: 99
Results for this minimization:
  a = 4.743749999999999, total energy = 0.0

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: 0.000000
         Iterations: 33
         Function evaluations: 96
Results for this minimization:
  a = 4.675000000000001, total energy = 0.0

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: -0.001542
         Iterations: 33
         Function evaluations: 70
Results for this minimization:
  a = 4.595287134645332, total energy = -0.0015415909661857363

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: 0.000000
         Iterations: 33
         Function evaluations: 97
Results for this minimization:
  a = 4.7250000000000005, total energy = 0.0

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: -0.001542
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 4.595287134543466, total energy = -0.0015415909661857328

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


Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 6.00325797411053 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 190
         Function evaluations: 373
Results for this minimization:
  a = 4.599999834351179, c = 7.4948574331816715, total energy = -0.0015504201157899048

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 6.3784615974924375 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 238
         Function evaluations: 462
Results for this minimization:
  a = 4.59999983459505, c = 7.494857432348104, total energy = -0.0015504201157899035

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 6.753665220874345 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 249
         Function evaluations: 465
Results for this minimization:
  a = 4.5999998352249385, c = 7.494857431704054, total energy = -0.001550420115789901

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 7.128868844256253 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 91
         Function evaluations: 198
Results for this minimization:
  a = 4.593098597440084, c = 7.841569117106678, total energy = -0.0015504226353629147

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 7.504072467638161 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 95
         Function evaluations: 214
Results for this minimization:
  a = 4.593098597369693, c = 7.517729344503102, total energy = -0.0015504226353629156

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 7.879276091020069 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 86
         Function evaluations: 208
Results for this minimization:
  a = 4.5930985975620136, c = 7.97892012715897, total energy = -0.0015504226353629214

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 8.254479714401977 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 89
         Function evaluations: 218
Results for this minimization:
  a = 4.593098597524224, c = 8.243749241616154, total energy = -0.0015504226353629177

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 8.629683337783884 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 87
         Function evaluations: 208
Results for this minimization:
  a = 4.593098597474203, c = 8.941616543646155, total energy = -0.0015504226353629151

Attempting to perform relaxation using initial lattice constant guess of a = [4.59528713] Angstroms and c = 9.004886961165791 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -0.001550
         Iterations: 86
         Function evaluations: 219
Results for this minimization:
  a = 4.593098597678026, c = 9.358784677627579, total energy = -0.0015504226353629158