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f51d94e054
Estimated hours taken: 6
Branches: main
Provide support for list syntax and quoted function symbols in the terms
that appear in breakpoint conditions.
runtime/mercury_trace_term.[ch]:
Provide the new capability when creating terms from strings.
Since with nonempty lists, the function symbol of the created term
("[|]") does not appear in the original string, do not try to reuse
the memory of the string for the memory of the function symbols;
instead, make a copy of each function symbol as needed. This also
makes the code simpler by avoiding the need to mangle the original
string to null-terminate these function symbols.
Add a mechanism for reporting the location and nature of syntax errors.
Don't assume that the initial string has no spaces.
trace/mercury_trace_spy.[ch]:
Don't record the strings from which the terms in breakpoint conditions
came from, since function symbols' memory no longer comes from there,
and thus we don't have to free them when the breakpoint is deleted.
trace/mercury_trace_cmd_breakpoint.c:
Use the new mechanism for reporting the details of syntax errors in
terms.
Include spaces in the string from which terms are constructed
at the points at which the user included spaces, since the absence
of such spaces in any reports of syntax errors would be surprising.
Delete the temporary memory for strings containing terms as soon
as they have been used to construct their terms.
trace/mercury_trace_internal.c:
Document a problem.
trace/Mmakefile:
Rebuild this directory automatically if a few more headers in the
runtime change.
doc/user_guide.texi:
Document the new capability.
tests/debugger/queens.{inp,exp,exp2}:
Test the new capability.
433 lines
17 KiB
Plaintext
433 lines
17 KiB
Plaintext
E1: C1 CALL pred queens.main/2-0 (cc_multi) queens.m:14
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mdb> echo on
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Command echo enabled.
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mdb> register --quiet
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mdb> retry 1
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not that many ancestors
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mdb> print *
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mdb: there are no live variables.
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mdb> b data
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0: + stop interface pred queens.data/1-0 (det)
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mdb> continue
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E2: C2 CALL pred queens.data/1-0 (det) queens.m:24 (queens.m:15)
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mdb> delete 0
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0: E stop interface pred queens.data/1-0 (det)
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mdb> print *
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mdb: there are no live variables.
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mdb>
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E3: C2 EXIT pred queens.data/1-0 (det) queens.m:24 (queens.m:15)
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mdb> print *
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HeadVar__1 [1, 2, 3, 4, 5]
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mdb>
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E4: C3 CALL pred queens.queen/2-0 (nondet) queens.m:29 (queens.m:15)
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mdb> print *
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Data (arg 1) [1, 2, 3, 4, 5]
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mdb>
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E5: C4 CALL pred queens.qperm/2-0 (nondet) queens.m:36 (queens.m:30)
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mdb> print *
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HeadVar__1 [1, 2, 3, 4, 5]
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mdb> print_optionals on
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mdb> print *
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HeadVar__1 [1, 2, 3, 4, 5]
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TypeInfo_for_T int
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mdb> print_optionals off
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mdb> print *
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HeadVar__1 [1, 2, 3, 4, 5]
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mdb>
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E6: C4 SWTC pred queens.qperm/2-0 (nondet) s2-2; queens.m:37
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mdb> print *
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HeadVar__1 [1, 2, 3, 4, 5]
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mdb>
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E7: C5 CALL pred queens.qdelete/3-0 (nondet) queens.m:45 (queens.m:38)
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mdb> print *
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HeadVar__2 [1, 2, 3, 4, 5]
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mdb>
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E8: C5 DISJ pred queens.qdelete/3-0 (nondet) c2;d1; queens.m:45
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mdb> print *
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HeadVar__2 [1, 2, 3, 4, 5]
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mdb> level 1
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Ancestor level set to 1:
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1 pred queens.qperm/2-0 (nondet) queens.m:38
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mdb> level -d 1
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Ancestor level set to 1:
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1 E5 C4 3 pred queens.qperm/2-0 (nondet) queens.m:38
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mdb> context nextline
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Contexts will be printed on the next line.
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mdb> level 1
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Ancestor level set to 1:
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1 pred queens.qperm/2-0 (nondet)
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queens.m:38
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mdb> level -d 1
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Ancestor level set to 1:
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1 E5 C4 3 pred queens.qperm/2-0 (nondet)
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queens.m:38
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mdb> context prevline
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Contexts will be printed on the previous line.
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mdb> level 1
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Ancestor level set to 1:
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1 queens.m:38
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pred queens.qperm/2-0 (nondet)
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mdb> level -d 1
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Ancestor level set to 1:
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1 E5 C4 3 queens.m:38
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pred queens.qperm/2-0 (nondet)
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mdb> print *
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HeadVar__1 [1, 2, 3, 4, 5]
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L [1, 2, 3, 4, 5]
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mdb> up 1
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Ancestor level set to 2:
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2 queens.m:30
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pred queens.queen/2-0 (nondet)
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mdb> vars
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1 Data (arg 1)
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mdb> print *
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Data (arg 1) [1, 2, 3, 4, 5]
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mdb>
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E9: C5 EXIT queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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mdb> print HeadVar__1
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HeadVar__1 1
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mdb> print HeadVar__2
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HeadVar__2 [1, 2, 3, 4, 5]
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mdb> print HeadVar__3
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HeadVar__3 [2, 3, 4, 5]
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mdb> hold HeadVar__2^1 x
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mdb> hold HeadVar__2^2 y
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mdb> hold HeadVar__2 y
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mdb: there is already a held variable $y
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mdb> hold HeadVar__2 z
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mdb> held_vars
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$x
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$y
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$z
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mdb> print $x
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x 1
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mdb> print $y
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y [2, 3, 4, 5]
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mdb> print $z
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z [1, 2, 3, 4, 5]
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mdb> diff $x $y
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The two values are of different types.
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mdb> diff $y $z
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There are 5 diffs, showing diffs 1-5:
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1: 1: 2/0 vs 1/0
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2: 2/1: 3/0 vs 2/0
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3: 2/2/1: 4/0 vs 3/0
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4: 2/2/2/1: 5/0 vs 4/0
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5: 2/2/2/2: []/0 vs [|]/2
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mdb> diff -m 2 $y $z
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There are 5 diffs, showing diffs 1-2:
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1: 1: 2/0 vs 1/0
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2: 2/1: 3/0 vs 2/0
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mdb> diff -s 2 -m 2 $y $z
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There are 5 diffs, showing diffs 3-4:
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3: 2/2/1: 4/0 vs 3/0
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4: 2/2/2/1: 5/0 vs 4/0
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mdb> diff -s 4 -m 2 $y $z
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There are 5 diffs, showing diff 5:
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5: 2/2/2/2: []/0 vs [|]/2
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mdb> diff $y $z^2
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There are no diffs.
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mdb>
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E10: C6 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> print *
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HeadVar__1 [2, 3, 4, 5]
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mdb>
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E11: C6 SWTC queens.m:37
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pred queens.qperm/2-0 (nondet) s2-2;
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mdb> print *
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HeadVar__1 [2, 3, 4, 5]
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mdb>
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E12: C7 CALL queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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mdb> print *
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HeadVar__2 [2, 3, 4, 5]
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mdb>
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E13: C7 DISJ queens.m:45
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pred queens.qdelete/3-0 (nondet) c2;d1;
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mdb> print *
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HeadVar__2 [2, 3, 4, 5]
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mdb>
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E14: C7 EXIT queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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mdb> print *
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HeadVar__1 2
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HeadVar__2 [2, 3, 4, 5]
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HeadVar__3 [3, 4, 5]
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mdb>
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E15: C8 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> goto -a 21
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E16: C8 SWTC queens.m:37
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pred queens.qperm/2-0 (nondet) s2-2;
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E17: C9 CALL queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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E18: C9 DISJ queens.m:45
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pred queens.qdelete/3-0 (nondet) c2;d1;
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E19: C9 EXIT queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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E20: C10 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> stack
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0 4* pred queens.qperm/2-0 (nondet) (queens.m:36 and others)
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4 pred queens.queen/2-0 (nondet) (queens.m:30)
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5 pred queens.main/2-0 (cc_multi) (queens.m:15)
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mdb> stack -d
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0 E20 C10 6 pred queens.qperm/2-0 (nondet) (queens.m:36) (empty)
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1 E15 C8 5 pred queens.qperm/2-0 (nondet) (queens.m:40) s2-2;c3;
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2 E10 C6 4 pred queens.qperm/2-0 (nondet) (queens.m:40) s2-2;c3;
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3 E5 C4 3 pred queens.qperm/2-0 (nondet) (queens.m:40) s2-2;c3;
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4 E4 C3 2 pred queens.queen/2-0 (nondet) (queens.m:30) c2;
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5 E1 C1 1 pred queens.main/2-0 (cc_multi) (queens.m:15) ?;c2;q!;
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mdb> stack 3
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0 4* pred queens.qperm/2-0 (nondet) (queens.m:36 and others)
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4 pred queens.queen/2-0 (nondet) (queens.m:30)
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5 pred queens.main/2-0 (cc_multi) (queens.m:15)
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mdb> stack -d 3
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0 E20 C10 6 pred queens.qperm/2-0 (nondet) (queens.m:36) (empty)
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1 E15 C8 5 pred queens.qperm/2-0 (nondet) (queens.m:40) s2-2;c3;
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2 E10 C6 4 pred queens.qperm/2-0 (nondet) (queens.m:40) s2-2;c3;
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<more stack frames snipped>
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mdb> print *
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HeadVar__1 [4, 5]
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mdb>
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E21: C10 SWTC queens.m:37
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pred queens.qperm/2-0 (nondet) s2-2;
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mdb> retry
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E20: C10 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> print *
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HeadVar__1 [4, 5]
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mdb> finish -a
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E21: C10 SWTC queens.m:37
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pred queens.qperm/2-0 (nondet) s2-2;
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E22: C11 CALL queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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E23: C11 DISJ queens.m:45
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pred queens.qdelete/3-0 (nondet) c2;d1;
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E24: C11 EXIT queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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E25: C12 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E26: C12 SWTC queens.m:37
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pred queens.qperm/2-0 (nondet) s2-2;
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E27: C13 CALL queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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E28: C13 DISJ queens.m:45
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pred queens.qdelete/3-0 (nondet) c2;d1;
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E29: C13 EXIT queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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E30: C14 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E31: C14 SWTC queens.m:36
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pred queens.qperm/2-0 (nondet) s1-2;
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E32: C14 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E33: C12 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E34: C10 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> register --quiet
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mdb> break print_list
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0: + stop interface pred queens.print_list/3-0 (det)
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mdb> break qdelete
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1: + stop interface pred queens.qdelete/3-0 (nondet)
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mdb> break_print HeadVar__2^2
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1: + stop interface pred queens.qdelete/3-0 (nondet)
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HeadVar__2^2 (flat)
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mdb> continue -a
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E35: C8 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E36: C6 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E37: C4 EXIT queens.m:36 (from queens.m:30)
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pred queens.qperm/2-0 (nondet)
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E38: C15 CALL queens.m:52 (from queens.m:31)
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pred queens.safe/1-0 (semidet)
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E39: C15 SWTC queens.m:53
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pred queens.safe/1-0 (semidet) s2-2;
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E40: C16 CALL queens.m:60 (from queens.m:54)
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pred queens.nodiag/3-0 (semidet)
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E41: C16 SWTC queens.m:61
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pred queens.nodiag/3-0 (semidet) s2-2;
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E42: C17 CALL int.m:NNNN (from queens.m:62)
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func int.-/2-0 (det)
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E43: C17 EXIT int.m:NNNN (from queens.m:62)
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func int.-/2-0 (det)
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E44: C18 CALL int.m:NNNN (from queens.m:63)
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func int.-/2-0 (det)
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E45: C18 EXIT int.m:NNNN (from queens.m:63)
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func int.-/2-0 (det)
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E46: C16 COND queens.m:64
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pred queens.nodiag/3-0 (semidet) s2-2;c4;?;
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E47: C16 THEN queens.m:65
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pred queens.nodiag/3-0 (semidet) s2-2;c4;t;
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E48: C16 FAIL queens.m:60 (from queens.m:54)
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pred queens.nodiag/3-0 (semidet)
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E49: C15 FAIL queens.m:52 (from queens.m:31)
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pred queens.safe/1-0 (semidet)
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E50: C4 REDO queens.m:36 (from queens.m:30)
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pred queens.qperm/2-0 (nondet)
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E51: C6 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E52: C8 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E53: C10 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E54: C12 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E55: C14 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E56: C14 FAIL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E57: C13 REDO queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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HeadVar__2^2 []
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mdb> break info
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0: + stop interface pred queens.print_list/3-0 (det)
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1: + stop interface pred queens.qdelete/3-0 (nondet)
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HeadVar__2^2 (flat)
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mdb> enable *
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0: + stop interface pred queens.print_list/3-0 (det)
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1: + stop interface pred queens.qdelete/3-0 (nondet)
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mdb> step -aS 5
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E58: C13 DISJ queens.m:46
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pred queens.qdelete/3-0 (nondet) c2;d2;
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E59: C19 CALL queens.m:45 (from queens.m:47)
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pred queens.qdelete/3-0 (nondet)
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mdb: the path 2 does not exist in variable HeadVar__2.
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E60: C19 FAIL queens.m:45 (from queens.m:47)
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pred queens.qdelete/3-0 (nondet)
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mdb: the path 2 does not exist in variable HeadVar__2.
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E61: C13 FAIL queens.m:45 (from queens.m:38)
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pred queens.qdelete/3-0 (nondet)
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HeadVar__2^2 []
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E62: C12 FAIL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> disable 1
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1: - stop interface pred queens.qdelete/3-0 (nondet)
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mdb> retry 4
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E5: C4 CALL queens.m:36 (from queens.m:30)
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pred queens.qperm/2-0 (nondet)
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mdb> break 40
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2: + stop linenumber queens.m:40
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mdb> continue -n
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E10: C6 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> continue -n
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E15: C8 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> continue -n
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E20: C10 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> continue -n
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E25: C12 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> continue -n
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E30: C14 CALL queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> continue -n
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E32: C14 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> return
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E33: C12 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E34: C10 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E35: C8 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E36: C6 EXIT queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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E38: C15 CALL queens.m:52 (from queens.m:31)
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pred queens.safe/1-0 (semidet)
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mdb> continue -n
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E51: C6 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
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mdb> continue -n
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E52: C8 REDO queens.m:36 (from queens.m:40)
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pred queens.qperm/2-0 (nondet)
|
|
mdb> forward
|
|
E53: C10 REDO queens.m:36 (from queens.m:40)
|
|
pred queens.qperm/2-0 (nondet)
|
|
E54: C12 REDO queens.m:36 (from queens.m:40)
|
|
pred queens.qperm/2-0 (nondet)
|
|
E55: C14 REDO queens.m:36 (from queens.m:40)
|
|
pred queens.qperm/2-0 (nondet)
|
|
E56: C14 FAIL queens.m:36 (from queens.m:40)
|
|
pred queens.qperm/2-0 (nondet)
|
|
E58: C13 DISJ queens.m:46
|
|
pred queens.qdelete/3-0 (nondet) c2;d2;
|
|
mdb> continue -n
|
|
E62: C12 FAIL queens.m:36 (from queens.m:40)
|
|
pred queens.qperm/2-0 (nondet)
|
|
mdb> continue -n
|
|
E63: C20 CALL queens.m:36 (from queens.m:40)
|
|
pred queens.qperm/2-0 (nondet)
|
|
mdb> delete *
|
|
0: E stop interface pred queens.print_list/3-0 (det)
|
|
1: D stop interface pred queens.qdelete/3-0 (nondet)
|
|
2: E stop linenumber queens.m:40
|
|
mdb> break main SWTC
|
|
There is no SWTC port in pred queens.main/2-0 (cc_multi).
|
|
mdb> break main EXIT
|
|
0: + stop specific pred queens.main/2-0 (cc_multi) EXIT
|
|
mdb> continue -n
|
|
[1, 3, 5, 2, 4]
|
|
E64: C1 EXIT queens.m:14
|
|
pred queens.main/2-0 (cc_multi)
|
|
mdb> retry
|
|
Retry across I/O operations is not always safe.
|
|
Are you sure you want to do it? yes
|
|
E1: C1 CALL queens.m:14
|
|
pred queens.main/2-0 (cc_multi)
|
|
mdb> delete 0
|
|
0: E stop specific pred queens.main/2-0 (cc_multi) EXIT
|
|
mdb> break safe
|
|
0: + stop interface pred queens.safe/1-0 (semidet)
|
|
mdb> condition HeadVar__1 = [
|
|
syntax error in term: [
|
|
^ unmatched character
|
|
mdb> condition HeadVar__1 = [a, c
|
|
syntax error in term: [a, c
|
|
^ unmatched character
|
|
mdb> condition HeadVar__1 = [f(a, b]
|
|
syntax error in term: [f(a, b]
|
|
^ here
|
|
mdb> condition HeadVar__1 = [1,2, 5, 4, 3 ]
|
|
0: + stop interface pred queens.safe/1-0 (semidet)
|
|
HeadVar__1 = [1, 2, 5, 4, 3]
|
|
mdb> continue
|
|
E65: C21 CALL queens.m:52 (from queens.m:31)
|
|
pred queens.safe/1-0 (semidet)
|
|
mdb> print
|
|
safe([1, 2, 5, 4, 3])
|
|
mdb> retry 2
|
|
E1: C1 CALL queens.m:14
|
|
pred queens.main/2-0 (cc_multi)
|
|
mdb> yes
|
|
Unknown command `yes'. Give the command `help' for help.
|
|
mdb> disable 0
|
|
0: - stop interface pred queens.safe/1-0 (semidet)
|
|
HeadVar__1 = [1, 2, 5, 4, 3]
|
|
mdb> break nodiag SWTC
|
|
Ambiguous port specification. The matches are:
|
|
0: SWTC s1-2;
|
|
1: SWTC s2-2;
|
|
|
|
Which do you want to put a breakpoint on (0-1 or *)? 1
|
|
1: + stop specific pred queens.nodiag/3-0 (semidet) SWTC s2-2;
|
|
mdb> continue
|
|
E41: C16 SWTC queens.m:61
|
|
pred queens.nodiag/3-0 (semidet) s2-2;
|
|
mdb> print *
|
|
B (arg 1) 1
|
|
D (arg 2) 1
|
|
HeadVar__3 [2, 3, 4, 5]
|
|
mdb> delete *
|
|
0: D stop interface pred queens.safe/1-0 (semidet)
|
|
HeadVar__1 = [1, 2, 5, 4, 3]
|
|
1: E stop specific pred queens.nodiag/3-0 (semidet) SWTC s2-2;
|
|
mdb> continue -n -S
|
|
[1, 3, 5, 2, 4]
|