Frama-C API - seqengine
method set_sequence : Wp__.Conditions.sequence -> unitInitialize state with this sequence
method set_goal : Wp__.Lang.F.pred -> unitAdds goal to state domain
method set_sequent : Wp__.Conditions.sequent -> unitIf true, states are rendered when printing sequences.
method set_state : bool -> unitIf set to false, states rendering is deactivated.