E1:     C1 CALL pred switch_on_unbounded.main/2-0 (det) switch_on_unbounded.m:21
mdb> echo on
Command echo enabled.
mdb> register --quiet
mdb> break edge
 0: + stop  interface pred switch_on_unbounded.edge/2-0 (semidet)
mdb> continue
      E2:     C2 CALL pred switch_on_unbounded.edge/2-0 (semidet) switch_on_unbounded.m:38 (switch_on_unbounded.m:22)
mdb> print *
       HeadVar__1             	2
mdb> step
      E3:     C2 SWTC pred switch_on_unbounded.edge/2-0 (semidet) s2-na; switch_on_unbounded.m:39
mdb> print *
       HeadVar__1             	2
mdb> delete *
 0: E stop  interface pred switch_on_unbounded.edge/2-0 (semidet)
mdb> break edge_str
 0: + stop  interface pred switch_on_unbounded.edge_str/2-0 (semidet)
mdb> continue
1
      E4:     C3 CALL pred switch_on_unbounded.edge_str/2-0 (semidet) switch_on_unbounded.m:45 (switch_on_unbounded.m:28)
mdb> print *
       HeadVar__1             	"2"
mdb> step
      E5:     C3 SWTC pred switch_on_unbounded.edge_str/2-0 (semidet) s2-na; switch_on_unbounded.m:46
mdb> print *
       HeadVar__1             	"2"
mdb> delete *
 0: E stop  interface pred switch_on_unbounded.edge_str/2-0 (semidet)
mdb> continue
1