clpfd_lists

Module Information

Module Information

447 Lines

38 Predicates

Imported Modules:           preferences          error_manager          clpfd          clpfd_interface

12 Exports

9 specified Imports

Imports

Exports

Name:    module_info/2 Module:    module_information Name:    get_freeval_type/3 Module:    kernel_freetypes Name:    get_global_type_value/3 Module:    b_global_sets Name:     maplist/2 Module:     lists Name:    cannot_match/2 Module:    kernel_tools Name:    cannot_match_aggressive/2 Module:    kernel_tools Name:    get_enumeration_starting_wait_flag/3 Module:    kernel_waitflags Name:    equal_object/2 Module:    kernel_objects Name:     avl_domain/2 Module:     avl

Name:    lazy_fd_value_check/4 Name:    try_in_fd_value_list_check/4 Name:    avl_fd_value_check/4 Name:    in_fd_value_list_wf/4 Name:    in_fd_value_list_wf/3 Name:    get_fd_value_list/5 Name:    try_get_fd_value_list/4 Name:    get_fd_value/3 Name:    get_fdset_information/2 Name:    get_finite_fdset_information/2 Name:    combine_fdset_information/3 Name:    assert_fdset_information/2

Predicates

Predicates:

assert_fdset_information/2

avl_fd_value_check/4

bound_list/2

check_non_var_list/1

check_valid_fd_type/1

combine_fdset_information/3

complete_type/1

contains_fd_element/3

contains_field_fd_el/3

exact_member_nr/4

finite_fd_set/2

get_fd_value/3

get_fd_value_list/5

get_fd_value_list5/7

get_fdset_information/2

get_field_fd_values/3

get_finite_fdset_information/2

get_next_fd_rec_field/3

ground_integer_list/1

in_fd_value_list_wf/3

in_fd_value_list_wf/4

in_non_ground_fd_value_lists/4

label_el_nr/4

lazy_fd_value_check/4

lazy_in_list_propagation_block/4

lazy_in_list_propagation_block_2/6

lazy_in_list_propagation_block_3/6

post_clpfd_element/3

split_fd_pair_list/3

treat_fd_rec_fields/3

try_get_fd_value/3

try_get_fd_value_list/4

try_get_fd_value_list5/5

try_get_fd_value_type/3

try_get_field_fd_values/3

try_in_fd_value_list_check/4

valid_rec_type/1

valid_type/1

assert_fdset_information/2

assert_fdset_information/2

avl_fd_value_check/4

avl_fd_value_check/4

bound_list/2

bound_list/2

Block: bound_list(-,?)

check_non_var_list/1

check_non_var_list/1

check_valid_fd_type/1

check_valid_fd_type/1

combine_fdset_information/3

combine_fdset_information/3

complete_type/1

complete_type/1

Block: complete_type(-)

contains_fd_element/3

contains_fd_element/3

Block: contains_fd_element(-,?,?)

contains_field_fd_el/3

contains_field_fd_el/3

Block: contains_field_fd_el(-,?,?)

exact_member_nr/4

exact_member_nr/4

finite_fd_set/2

finite_fd_set/2

get_fd_value/3

get_fd_value/3

get_fd_value_list/5

get_fd_value_list/5

get_fd_value_list5/7

get_fd_value_list5/7

get_fdset_information/2

get_fdset_information/2

get_field_fd_values/3

get_field_fd_values/3

get_finite_fdset_information/2

get_finite_fdset_information/2

get_next_fd_rec_field/3

get_next_fd_rec_field/3

ground_integer_list/1

ground_integer_list/1

in_fd_value_list_wf/3

in_fd_value_list_wf/3

in_fd_value_list_wf/4

in_fd_value_list_wf/4

in_non_ground_fd_value_lists/4

in_non_ground_fd_value_lists/4

label_el_nr/4

label_el_nr/4

Block: label_el_nr(?,-,?,?) label_el_nr(-,?,?,-)

lazy_fd_value_check/4

lazy_fd_value_check/4

lazy_in_list_propagation_block/4

lazy_in_list_propagation_block/4

Block: lazy_in_list_propagation_block(-,?,?,?)

lazy_in_list_propagation_block_2/6

lazy_in_list_propagation_block_2/6

Block: lazy_in_list_propagation_block_2(-,?,?,?,?,?)

lazy_in_list_propagation_block_3/6

lazy_in_list_propagation_block_3/6

Block: lazy_in_list_propagation_block_3(-,?,?,?,?,?)

post_clpfd_element/3

post_clpfd_element/3

split_fd_pair_list/3

split_fd_pair_list/3

treat_fd_rec_fields/3

treat_fd_rec_fields/3

try_get_fd_value/3

try_get_fd_value/3

try_get_fd_value_list/4

try_get_fd_value_list/4

try_get_fd_value_list5/5

try_get_fd_value_list5/5

Description:
(ground(T) -> true ; print(get_fd_val_list(H,T)),nl), %%

try_get_fd_value_type/3

try_get_fd_value_type/3

try_get_field_fd_values/3

try_get_field_fd_values/3

try_in_fd_value_list_check/4

try_in_fd_value_list_check/4

Block: try_in_fd_value_list_check(-,?,?,?)

valid_rec_type/1

valid_rec_type/1

valid_type/1

valid_type/1

Determinacy Checker

Determinacy Checker:

! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_release,true)
! Existence error in argument 1 of absolute_file_name/3
! file extension('dll_path/dll_path') does not exist
! goal: absolute_file_name(extension('dll_path/dll_path'),_36543,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/pathes.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(no_terminal_colors,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_enter_debugger_upon_error,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_use_timer,true)
! Existence error in argument 1 of absolute_file_name/3
! file extension('counter/counter') does not exist
! goal: absolute_file_name(extension('counter/counter'),_36543,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/error_manager.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_debug_flag,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(plspec_patch_libraries,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_debug_flag,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_release,true)
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(error_manager) does not exist
! goal: absolute_file_name(probsrc(error_manager),_46747,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/xml_prob.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(debug) does not exist
! goal: absolute_file_name(probsrc(debug),_45083,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/xml_prob.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_profile,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_src_profile,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_safe_mode,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_core_only,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_myheap,false)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(disable_chr,true)
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(tools_strings) does not exist
! goal: absolute_file_name(probsrc(tools_strings),_15757,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/pathes_lib.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extrasrc(json_parser) does not exist
! goal: absolute_file_name(extrasrc(json_parser),_84499,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/translate.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(clpfd_interface) does not exist
! goal: absolute_file_name(probsrc(clpfd_interface),_84499,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/typing_tools.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file covsrc(coverage_tools_annotations) does not exist
! goal: absolute_file_name(covsrc(coverage_tools_annotations),_110211,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_waitflags.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_safe_mode,true)
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(tools_lists) does not exist
! goal: absolute_file_name(probsrc(tools_lists),_110211,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_tools.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_debug_watch_flag,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_safe_mode,true)
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(kernel_waitflags) does not exist
! goal: absolute_file_name(probsrc(kernel_waitflags),_112355,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/runtime_profiler.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(tools) does not exist
! goal: absolute_file_name(probsrc(tools),_126015,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_records.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file prob_rewrite_rules(b_ast_cleanup_rewrite_rules) does not exist
! goal: absolute_file_name(prob_rewrite_rules(b_ast_cleanup_rewrite_rules),_125727,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/b_ast_cleanup.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(tools_strings) does not exist
! goal: absolute_file_name(probsrc(tools_strings),_126015,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/input_syntax_tree.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(eventhandling) does not exist
! goal: absolute_file_name(probsrc(eventhandling),_164819,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/pragmas.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(module_information) does not exist
! goal: absolute_file_name(probsrc(module_information),_166625,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/bmachine_static_checks.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file chrsrc(chr_integer_inequality) does not exist
! goal: absolute_file_name(chrsrc(chr_integer_inequality),_227559,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/clpfd_interface.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(closures) does not exist
! goal: absolute_file_name(probsrc(closures),_227559,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/memoization.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(preferences) does not exist
! goal: absolute_file_name(probsrc(preferences),_233529,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_z.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_use_timer,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_debug_watch_flag,true)
! Existence error in argument 1 of absolute_file_name/3
! file extension('counter/counter') does not exist
! goal: absolute_file_name(extension('counter/counter'),_223569,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/state_space.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extrasrc(external_functions_reals) does not exist
! goal: absolute_file_name(extrasrc(external_functions_reals),_222805,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/external_functions.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extrasrc(external_functions_svg) does not exist
! goal: absolute_file_name(extrasrc(external_functions_svg),_222805,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/external_functions.pl')])
! Existence error in user:check_arithmetic_function/1
! procedure user:check_arithmetic_function/1 does not exist
! goal: user:check_arithmetic_function(log(2,4))
! Existence error in user:exists_source/1
! procedure user:exists_source/1 does not exist
! goal: user:exists_source(library(atts))
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(tools_strings) does not exist
! goal: absolute_file_name(probsrc(tools_strings),_224421,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_strings.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(kernel_freetypes) does not exist
! goal: absolute_file_name(probsrc(kernel_freetypes),_218017,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/external_functions.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(kernel_reals) does not exist
! goal: absolute_file_name(probsrc(kernel_reals),_213743,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/b_interpreter_check.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(clpfd_interface) does not exist
! goal: absolute_file_name(probsrc(clpfd_interface),_208049,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_equality.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(no_wd_checking,true)
! Existence error in user:exists_source/1
! procedure user:exists_source/1 does not exist
! goal: user:exists_source(library(atts))
! Existence error in user:exists_source/1
! procedure user:exists_source/1 does not exist
! goal: user:exists_source(library(atts))
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(avl_tools) does not exist
! goal: absolute_file_name(probsrc(avl_tools),_191137,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/bsets_clp.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extension('counter/counter') does not exist
! goal: absolute_file_name(extension('counter/counter'),_191137,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_reals.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file kodkodsrc(kodkod) does not exist
! goal: absolute_file_name(kodkodsrc(kodkod),_184595,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/b_interpreter.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extension('counter/counter') does not exist
! goal: absolute_file_name(extension('counter/counter'),_184741,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/succeed_max.pl')])
! Existence error in user:exists_source/1
! procedure user:exists_source/1 does not exist
! goal: user:exists_source(library(logarr))
! Existence error in argument 1 of absolute_file_name/3
! file probcspsrc(haskell_csp) does not exist
! goal: absolute_file_name(probcspsrc(haskell_csp),_184595,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/xtl_interface.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extension('probhash/probhash') does not exist
! goal: absolute_file_name(extension('probhash/probhash'),_187875,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/b_machine_hierarchy.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extension('probhash/probhash') does not exist
! goal: absolute_file_name(extension('probhash/probhash'),_184741,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/value_persistance.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(avl_tools) does not exist
! goal: absolute_file_name(probsrc(avl_tools),_184883,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/state_packing.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(btypechecker) does not exist
! goal: absolute_file_name(probsrc(btypechecker),_172231,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/specfile.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(error_manager) does not exist
! goal: absolute_file_name(probsrc(error_manager),_164819,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/bmachine_static_checks.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_safe_mode,true)
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(eventhandling) does not exist
! goal: absolute_file_name(probsrc(eventhandling),_161397,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/parsercall.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(bsyntaxtree) does not exist
! goal: absolute_file_name(probsrc(bsyntaxtree),_161685,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/bmachine_eventb.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file kodkodsrc(kodkod) does not exist
! goal: absolute_file_name(kodkodsrc(kodkod),_130289,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/bmachine.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(b_state_model_check) does not exist
! goal: absolute_file_name(probsrc(b_state_model_check),_125873,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/b_read_write_info.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(bmachine_eventb) does not exist
! goal: absolute_file_name(probsrc(bmachine_eventb),_118475,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/btypechecker.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(kernel_waitflags) does not exist
! goal: absolute_file_name(probsrc(kernel_waitflags),_110211,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/delay.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(performance_messages) does not exist
! goal: absolute_file_name(probsrc(performance_messages),_110211,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/b_compiler.pl')])
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_safe_mode,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_safe_mode,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(no_wd_checking,true)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_data_validation_mode,xxxtrue)
! Existence error in user:environ/2
! procedure user:environ/2 does not exist
! goal: user:environ(prob_data_validation_mode,true)
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(bsyntaxtree) does not exist
! goal: absolute_file_name(probsrc(bsyntaxtree),_84357,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/custom_explicit_sets.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(custom_explicit_sets) does not exist
! goal: absolute_file_name(probsrc(custom_explicit_sets),_55091,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/bsyntaxtree.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extension('random_permutations/random_permutations') does not exist
! goal: absolute_file_name(extension('random_permutations/random_permutations'),_57239,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/fd_utils_clpfd.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(error_manager) does not exist
! goal: absolute_file_name(probsrc(error_manager),_55237,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/partition_detection.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file extension('counter/counter') does not exist
! goal: absolute_file_name(extension('counter/counter'),_19003,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_objects.pl')])
! Existence error in argument 1 of absolute_file_name/3
! file probsrc(eventhandling) does not exist
! goal: absolute_file_name(probsrc(eventhandling),_13309,[access(exist),file_type(source),relative_to('/builds/stups/prob/prolog_doc_gen/prolog-Doc/prob_prolog/src/kernel_freetypes.pl')])
* Non-determinate: clpfd_lists:get_field_fd_values/3 (clause 2)
* Indexing cannot distinguish this from clause 3.
* Non-determinate: clpfd_lists:label_el_nr/4 (clause 1)
* Calls nondet predicate clpfd_lists:labeling/2 .