test_solve 
x1 
Vec Object: 1 MPI processes
  type: seq
  length=3
x2 
Vec Object: 1 MPI processes
  type: seq
  length=2
test_solve_matgetvecs 
x1 
Vec Object: 1 MPI processes
  type: seq
  length=3
x2 
Vec Object: 1 MPI processes
  type: seq
  length=2
