E1:     C1 CALL pred input_term_dep.main/2-0 (det) input_term_dep.m:13
mdb> echo on
Command echo enabled.
mdb> register --quiet
mdb> break p
 0: + stop  interface pred input_term_dep.p/3-0 (det)
mdb> break q
 1: + stop  interface pred input_term_dep.q/1-0 (semidet)
mdb> break r
 2: + stop  interface pred input_term_dep.r/2-0 (det)
mdb> break s
 3: + stop  interface pred input_term_dep.s/1-0 (semidet)
mdb> continue
      E2:     C2 CALL pred input_term_dep.p/3-0 (det) input_term_dep.m:35 (input_term_dep.m:24)
mdb> finish
      E3:     C2 EXIT pred input_term_dep.p/3-0 (det) input_term_dep.m:35 (input_term_dep.m:24)
mdb> dd -d 3 -n 7
p(5, 8, 13)
Valid? browse 3
browser> mark
pc(5, 13)
Valid? browse 1
browser> mark
pa(5)
Valid? yes
pb(8)
Valid? yes
Found inadmissible call:
Parent p(_, _, _)
Call pc(5, _)
Is this a bug? yes
      E3:     C2 EXIT pred input_term_dep.p/3-0 (det) input_term_dep.m:35 (input_term_dep.m:24)
mdb> continue
5
8
13
      E4:     C3 CALL pred input_term_dep.q/1-0 (semidet) input_term_dep.m:72 (input_term_dep.m:61)
mdb> finish
      E5:     C3 EXIT pred input_term_dep.q/1-0 (semidet) input_term_dep.m:72 (input_term_dep.m:61)
mdb> dd -d 3 -n 7
q([[2, 3], [], [1]])
Valid? browse 1
browser> mark 1/2
qa([[1], [2, 3]])
Valid? yes
qb([])
Valid? yes
qc([[2, ...], [], [1]], [[2, ...], [], [1]])
Valid? yes
Found incorrect contour:
qa([[1], [2, 3]])
qb([])
qc([[2, ...], [], [1]], [[2, ...], [], [1]])
q([[2, 3], [], [1]])
Is this a bug? yes
      E5:     C3 EXIT pred input_term_dep.q/1-0 (semidet) input_term_dep.m:72 (input_term_dep.m:61)
mdb> continue
[[2, 3], [], [1]]
      E6:     C4 CALL pred input_term_dep.r/2-0 (det) input_term_dep.m:104 (input_term_dep.m:97)
mdb> finish
      E7:     C4 EXIT pred input_term_dep.r/2-0 (det) input_term_dep.m:104 (input_term_dep.m:97)
mdb> dd -d 3 -n 7
r(1, 33)
Valid? browse 2
browser> mark
rc(3, 33)
Valid? browse 1
browser> mark
ra(1, 3)
Valid? yes
rb(3)
Valid? yes
Found inadmissible call:
Parent r(1, _)
Call rc(3, _)
Is this a bug? yes
      E7:     C4 EXIT pred input_term_dep.r/2-0 (det) input_term_dep.m:104 (input_term_dep.m:97)
mdb> continue
33
      E8:     C5 CALL pred input_term_dep.s/1-0 (semidet) input_term_dep.m:150 (input_term_dep.m:140)
mdb> finish
      E9:     C5 EXIT pred input_term_dep.s/1-0 (semidet) input_term_dep.m:150 (input_term_dep.m:140)
mdb> dd -d 3 -n 7
s(1)
Valid? no
sa(1, 7)
Valid? skip
sc(7)
Valid? browse 1
browser> mark
sa(1, 7)
Valid? yes
Found inadmissible call:
Parent s(1)
Call sc(7)
Is this a bug? yes
      E9:     C5 EXIT pred input_term_dep.s/1-0 (semidet) input_term_dep.m:150 (input_term_dep.m:140)
mdb> continue
yes