Element = Lattice = Model = Element: B Lattice: hcp Model: Sim_LAMMPS_ReaxFF_AnGoddard_2015_BC__SM_389039364091_000 Computed model cutoff of 9.939069824218752 Angstroms Computed isolated atomic energy of -0.1512663730741772 eV for species B ============================================================================== ============================================================================== 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)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 1.0 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 1.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 1.125 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 1.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 1.25 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... 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: -10.484687 Iterations: 33 Function evaluations: 71 Results for this minimization: a = 1.6322478025686005, total energy = -10.484687133461144 Attempting to perform relaxation using initial lattice constant guess of a = 1.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 1.5 Angstroms Exception message: ERROR on proc 0: Not enough space for bonds! total=513760 allocated=352095 (src/REAXFF/reaxff_rese Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 1.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 1.625 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=36 (src/REAXFF/reaxff_forces.cpp:9 Continuing... 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: -26.207416 Iterations: 33 Function evaluations: 69 Results for this minimization: a = 2.023761542979628, total energy = -26.207415728277933 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: -26.207416 Iterations: 33 Function evaluations: 70 Results for this minimization: a = 2.023761546006426, total energy = -26.207415728277724 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: -26.207416 Iterations: 32 Function evaluations: 68 Results for this minimization: a = 2.0237615430727596, total energy = -26.207415728277947 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: -26.207416 Iterations: 32 Function evaluations: 67 Results for this minimization: a = 2.023761543165892, total energy = -26.207415728278022 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: -26.207416 Iterations: 34 Function evaluations: 73 Results for this minimization: a = 2.0237615436315526, total energy = -26.2074157282777 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: -26.207416 Iterations: 34 Function evaluations: 73 Results for this minimization: a = 2.023761539981933, total energy = -26.20741572827803 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: -26.207416 Iterations: 35 Function evaluations: 73 Results for this minimization: a = 2.023761541582644, total energy = -26.207415728277955 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: -26.207416 Iterations: 36 Function evaluations: 76 Results for this minimization: a = 2.023761541736894, total energy = -26.207415728278004 Attempting to perform relaxation using initial lattice constant guess of a = 2.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 2.75 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=50 str(i+1)=36 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 2.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 2.875 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.0 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.125 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.25 Angstroms Exception message: Attempted to evaluate energy at a = 0.9749999999999961 Angstroms and c = 1.5921683328090595 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.375 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.5 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.625 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.75 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 3.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 3.875 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.0 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.125 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.25 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.375 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.5 Angstroms Exception message: ERROR on proc 0: Neighbor list overflow, boost neigh_modify one (src/npair_half_bin_newtoff_ghost.c Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.625 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=50 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.75 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=50 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 4.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 4.875 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.0 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.125 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.25 Angstroms Exception message: ERROR on proc 0: step 0: bondchk failed: i=0 end(i)=38 str(i+1)=25 (src/REAXFF/reaxff_forces.cpp:9 Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.375 Angstroms Exception message: Attempted to evaluate energy at a = -0.5374999999999961 Angstroms and c = -0.8777338244972991 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.5 Angstroms Exception message: Attempted to evaluate energy at a = -0.5500000000000078 Angstroms and c = -0.8981462390205114 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.625 Angstroms Exception message: Attempted to evaluate energy at a = -0.5625 Angstroms and c = -0.9185586535436918 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.75 Angstroms Exception message: Attempted to evaluate energy at a = -0.5750000000000117 Angstroms and c = -0.9389710680669041 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 5.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 5.875 Angstroms Exception message: Attempted to evaluate energy at a = -0.5875000000000039 Angstroms and c = -0.9593834825900844 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.0 Angstroms Exception message: Attempted to evaluate energy at a = -0.6000000000000156 Angstroms and c = -0.9797958971132967 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.125 Angstroms Exception message: Attempted to evaluate energy at a = -0.6125000000000078 Angstroms and c = -1.000208311636477 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.25 Angstroms Exception message: Attempted to evaluate energy at a = -0.625 Angstroms and c = -1.0206207261596576 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.375 Angstroms Exception message: Attempted to evaluate energy at a = -0.6375000000000028 Angstroms and c = -1.0410331406828552 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.5 Angstroms Exception message: Attempted to evaluate energy at a = -0.6500000000000128 Angstroms and c = -1.0614455552060647 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.625 Angstroms Exception message: Attempted to evaluate energy at a = -0.6625000000000156 Angstroms and c = -1.0818579697292625 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.75 Angstroms Exception message: Attempted to evaluate energy at a = -0.6750000000000078 Angstroms and c = -1.1022703842524428 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 6.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 6.875 Angstroms Exception message: Attempted to evaluate energy at a = -0.6875 Angstroms and c = -1.1226827987756234 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.0 Angstroms Exception message: Attempted to evaluate energy at a = -0.7000000000000028 Angstroms and c = -1.143095213298821 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.125 Angstroms Exception message: Attempted to evaluate energy at a = -0.7125000000000128 Angstroms and c = -1.1635076278220304 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.25 Angstroms Exception message: Attempted to evaluate energy at a = -0.7250000000000156 Angstroms and c = -1.1839200423452283 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.375 Angstroms Exception message: Attempted to evaluate energy at a = -0.7375000000000078 Angstroms and c = -1.2043324568684086 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.5 Angstroms Exception message: Attempted to evaluate energy at a = -0.75 Angstroms and c = -1.224744871391589 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.625 Angstroms Exception message: Attempted to evaluate energy at a = -0.7624999999999922 Angstroms and c = -1.2451572859147695 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.75 Angstroms Exception message: Attempted to evaluate energy at a = -0.7750000000000234 Angstroms and c = -1.2655697004380135 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 7.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 7.875 Angstroms Exception message: Attempted to evaluate energy at a = -0.7875000000000156 Angstroms and c = -1.285982114961194 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.0 Angstroms Exception message: Attempted to evaluate energy at a = -0.8000000000000078 Angstroms and c = -1.3063945294843744 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.125 Angstroms Exception message: Attempted to evaluate energy at a = -0.8125 Angstroms and c = -1.3268069440075547 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.25 Angstroms Exception message: Attempted to evaluate energy at a = -0.8249999999999922 Angstroms and c = -1.3472193585307353 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.375 Angstroms Exception message: Attempted to evaluate energy at a = -0.8375000000000234 Angstroms and c = -1.3676317730539793 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.5 Angstroms Exception message: Attempted to evaluate energy at a = -0.8500000000000156 Angstroms and c = -1.3880441875771599 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.625 Angstroms Exception message: Attempted to evaluate energy at a = -0.8625000000000078 Angstroms and c = -1.4084566021003402 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.75 Angstroms Exception message: Attempted to evaluate energy at a = -0.875 Angstroms and c = -1.4288690166235205 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 8.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 8.875 Angstroms Exception message: Attempted to evaluate energy at a = -0.8874999999999922 Angstroms and c = -1.449281431146701 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.0 Angstroms Exception message: Attempted to evaluate energy at a = -0.9000000000000234 Angstroms and c = -1.469693845669945 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.125 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.125 Angstroms Exception message: Attempted to evaluate energy at a = -0.9125000000000156 Angstroms and c = -1.4901062601931256 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.25 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.25 Angstroms Exception message: Attempted to evaluate energy at a = -0.9250000000000078 Angstroms and c = -1.510518674716306 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.375 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.375 Angstroms Exception message: Attempted to evaluate energy at a = -0.9375 Angstroms and c = -1.5309310892394863 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.5 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.5 Angstroms Exception message: Attempted to evaluate energy at a = -0.9499999999999922 Angstroms and c = -1.5513435037626666 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.625 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.625 Angstroms Exception message: Attempted to evaluate energy at a = -0.9625000000000234 Angstroms and c = -1.5717559182859109 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.75 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.75 Angstroms Exception message: Attempted to evaluate energy at a = -0.9750000000000156 Angstroms and c = -1.5921683328090912 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 9.875 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 9.875 Angstroms Exception message: Attempted to evaluate energy at a = -0.9875000000000078 Angstroms and c = -1.6125807473322717 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... Attempting to perform relaxation using initial lattice constant guess of a = 10.0 Angstroms (c/a fixed at sqrt(8/3)) Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: Attempted to evaluate energy at a = -1.0 Angstroms and c = -1.632993161855452 Angstroms; the model cutoff was estimated to be 9.939069824218752 Angstroms. This may mean that the model does not possess close-range repulsive forces to prevent system collapse. In order to prevent possible neighbor list overflow, both a and c must be greater than 0.1 times the model cutoff... Continuing... ============================================================================== ============================================================================== Starting optimization with both a and c/a relaxed ============================================================================== ============================================================================== Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 2.6438310048132445 = ([1.30639453] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 2.8090704426140722 = ([1.38804419] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 2.9743098804149 = ([1.46969385] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 3.1395493182157277 = ([1.5513435] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 3.3047887560165554 = ([1.63299316] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 3.470028193817383 = ([1.71464282] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 3.635267631618211 = ([1.79629248] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 3.8005070694190386 = ([1.87794214] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... Attempting to perform relaxation using initial lattice constant guess of a = [2.02376154] Angstroms and c = 3.9657465072198663 = ([1.95959179] * a) Angstroms Failed to perform relaxation w.r.t. 'a' with c/a fixed at sqrt(8/3) and an initial guess of a = 10.0 Angstroms Exception message: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part. Continuing... ============================================================================== ============================================================================== Finished with optimization ============================================================================== ============================================================================== Final lattice Constants: a = [2.02376154] Angstroms, c = [3.30478876] Angstroms, c/a = 1.632993 Total energy: -26.20741572827803 eV Cohesive energy: -6.551853932069507 eV/atom ============================================================================== ==============================================================================