[0] <mat> main(): Mat info on PETSC_COMM_WORLD with no arguments
[0] <mat> main(): Mat info on PETSC_COMM_WORLD with 1 argument equal to 1234: 1234
[0] <vec> main(): Vec info on PETSC_COMM_WORLD with no arguments
[0] <vec> main(): Vec info on PETSC_COMM_WORLD with 1 argument equal to 1234: 1234
[0] <mat> main(): Mat info on PETSC_COMM_SELF with no arguments
[0] <mat> main(): Mat info on PETSC_COMM_SELF with 1 argument equal to 1234: 1234
[0] <vec> main(): Vec info on PETSC_COMM_SELF with no arguments
[0] <vec> main(): Vec info on PETSC_COMM_SELF with 1 argument equal to 1234: 1234
[0] <mat> main(): Mat info is enabled
[0] <vec> main(): Vec info is enabled
[0] <(null)> main(): Mat info is enabled again through PetscInfoActivateClass
[0] <(null)> main(): Vec info is enabled again through PetscInfoActivateClass
[0] <(null)> main(): Sys info is enabled again through PetscInfoActivateClass
[0] <Mat> main(): Mat info is enabled again through PetscInfoSetClasses
[0] <Vec> main(): Vec info is enabled again through PetscInfoSetClasses
[0] <sys> main(): Sys info is enabled again through PetscInfoSetClasses
[0] <Mat> main(): Mat info is enabled again through inverted PetscInfoSetClasses
