*HEADING
 - Adding/removing elements and verification for initial conditions
 - Test for CPE4 element
*IMPORT, STEP=1, UPDATE=YES, STATE=NO
 E1, 
*NODE, NSET=N3
 111,0,5,0
 112,2,5,0
 113,2,7,0
 114,0,7,0
*ELEMENT, TYPE=CPE4, ELSET=E3
 111,111,112,113,114
*SOLID SECTION, ELSET=E3, MATERIAL=MAT2
*MATERIAL, NAME=MAT2
*HYPERELASTIC
3.2E6,0.8E6,0.001
*DENSITY
1000., 
*BOUNDARY
  1,1,2
111,1,2
  2,2,2
112,2,2
  4,1,1
114,1,1
*NSET, NSET=SIDE_2
 112,113
*INITIAL CONDITIONS, TYPE=STRESS, UNBALANCED STRESS=STEP
 E1, 6.79921E+05,-31319.,-6.47695E+05,0.00000E+00
*RESTART, WRITE, FREQ=999
*STEP, NLGEOM, INC=100
*STATIC
 0.1, 1.0
*CONTROLS, PARAMETER=FIELD, FIELD=GLOBAL
 1.0E-4,,,1.0
*BOUNDARY
 SIDE_2,1,1,0.2
*EL FILE, DIRECTIONS=YES
 S,LE
*NODE FILE
 U,COORD
*OUTPUT,FIELD,VARIABLE=PRESELECT,FREQUENCY=999
*OUTPUT,FIELD
*ELEMENT OUTPUT
 S,LE
*NODE OUTPUT
 U,COORD
*END STEP