Element = Lattice = Model = Element: Rb
Lattice: hcp
Model: Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Rb__MO_147245690895_002
Relaxation with c/a ratio fixed
Simplex search starting from: 5.0 * 0
Simplex search starting from: [2.0]
Creating new atoms: (1, 1, 1)
Optimization terminated successfully.
         Current function value: -0.871510
         Iterations: 40
         Function evaluations: 87
Tmp Lattice Constants: [5.03015066]
Tmp Energy: -0.8715096925972594
--------
Simplex search starting from: 5.0 * 0
Simplex search starting from: [2.25]
Optimization terminated successfully.
         Current function value: -0.871510
         Iterations: 39
         Function evaluations: 84
Tmp Lattice Constants: [5.03015083]
Tmp Energy: -0.871509692597249
--------
Simplex search starting from: 5.0 * 0
Simplex search starting from: [2.5]
Optimization terminated successfully.
         Current function value: -0.871510
         Iterations: 39
         Function evaluations: 86
Tmp Lattice Constants: [5.03015065]
Tmp Energy: -0.871509692597255
--------
Simplex search starting from: 5.0 * 0
Simplex search starting from: [2.75]
Optimization terminated successfully.
         Current function value: -0.871510
         Iterations: 39
         Function evaluations: 85
Tmp Lattice Constants: [5.0301508]
Tmp Energy: -0.8715096925972489
--------
Simplex search starting from: 5.0 * 0
Simplex search starting from: [3.0]
Optimization terminated successfully.
         Current function value: -0.871510
         Iterations: 39
         Function evaluations: 84
Tmp Lattice Constants: [5.03015076]
Tmp Energy: -0.8715096925972553
--------
ERR: Lower energy is obtained by separating atoms beyond cutoff.
ERR: System Collapsed. Structure Maybe Unstable.