Element = Lattice = Model = Element: C
Lattice: hcp
Model: Tersoff_LAMMPS_Tersoff_1994_SiC__MO_794973922560_000
Computed model cutoff of 2.09999999832366 Angstroms
Computed isolated atomic energy of 0.0 eV for species C

==============================================================================
==============================================================================
 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: -14.082291
         Iterations: 36
         Function evaluations: 75
Results for this minimization:
  a = 1.9213264733552953, total energy = -14.082290653503073

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: -14.082291
         Iterations: 37
         Function evaluations: 77
Results for this minimization:
  a = 1.9213264750200327, total energy = -14.082290653503069

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: -14.082291
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 1.9213264742866158, total energy = -14.08229065350307

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: -14.082291
         Iterations: 35
         Function evaluations: 72
Results for this minimization:
  a = 1.9213264769525293, total energy = -14.08229065350306

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: -14.082291
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 1.9213264751248074, total energy = -14.082290653503055

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: -14.082291
         Iterations: 33
         Function evaluations: 69
Results for this minimization:
  a = 1.9213264743797482, total energy = -14.082290653503051

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: -14.082291
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 1.9213264773134147, total energy = -14.08229065350305

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: -14.082291
         Iterations: 31
         Function evaluations: 65
Results for this minimization:
  a = 1.9213264767313376, total energy = -14.08229065350305

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: -14.082291
         Iterations: 32
         Function evaluations: 66
Results for this minimization:
  a = 1.9213264763355253, total energy = -14.082290653503057

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: -14.082291
         Iterations: 33
         Function evaluations: 69
Results for this minimization:
  a = 1.9213264755206179, total energy = -14.082290653503058

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: 32
         Function evaluations: 95
Results for this minimization:
  a = 2.25, 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: 32
         Function evaluations: 95
Results for this minimization:
  a = 2.375, 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: 32
         Function evaluations: 95
Results for this minimization:
  a = 2.5, 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: 0.000000
         Iterations: 32
         Function evaluations: 95
Results for this minimization:
  a = 2.625, total energy = 0.0

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: 32
         Function evaluations: 95
Results for this minimization:
  a = 2.75, 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: 32
         Function evaluations: 95
Results for this minimization:
  a = 2.875, 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: 32
         Function evaluations: 95
Results for this minimization:
  a = 3.0, 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: 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 = [1.92132647] Angstroms and c = 2.510010394144839 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 80
         Function evaluations: 165
Results for this minimization:
  a = 2.4504408425267927, c = 2.096452878415266, total energy = -21.80480520805074

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 2.6668860437788915 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 75
         Function evaluations: 160
Results for this minimization:
  a = 2.450440845275403, c = 2.096452872552166, total energy = -21.80480520805079

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 2.823761693412944 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 73
         Function evaluations: 152
Results for this minimization:
  a = 2.450440849527808, c = 2.0964528784592806, total energy = -21.80480520805078

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 2.980637343046997 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 99
         Function evaluations: 204
Results for this minimization:
  a = 2.4504408248308778, c = 2.096452867999398, total energy = -21.80480520805077

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 3.1375129926810494 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.082325
         Iterations: 70
         Function evaluations: 148
Results for this minimization:
  a = 1.9202205413921956, c = 3.1411288088702776, total energy = -14.08232545019858

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 3.294388642315102 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 86
         Function evaluations: 180
Results for this minimization:
  a = 2.4504408393218187, c = 2.0964528804740814, total energy = -21.804805208050748

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 3.4512642919491547 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 91
         Function evaluations: 186
Results for this minimization:
  a = 2.450440850070331, c = 2.0964528771130704, total energy = -21.80480520805077

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 3.6081399415832074 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.082325
         Iterations: 82
         Function evaluations: 168
Results for this minimization:
  a = 1.9202205578647535, c = 3.1411287497069518, total energy = -14.082325450198576

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 3.76501559121726 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.082325
         Iterations: 145
         Function evaluations: 280
Results for this minimization:
  a = 1.9202205485953354, c = 3.1411287877155396, total energy = -14.082325450198582

Attempting to perform relaxation using initial lattice constant guess of a = [1.92132647] Angstroms and c = 3.9218912408513127 = ([2.04124145] * a) Angstroms

Optimization terminated successfully.
         Current function value: -21.804805
         Iterations: 112
         Function evaluations: 226
Results for this minimization:
  a = 2.4504408329947722, c = 2.0964528661321458, total energy = -21.804805208050706