%------------------------------------------------------------------------------
% File : E-SAT---3.5.1
% Problem : SET080-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_E /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% Computer : n008.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Thu Sep 24 02:16:26 PM UTC 2026
% Result : Unsatisfiable 0.17s 0.61s
% Output : CNFRefutation 0.17s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 4
% Syntax : Number of clauses : 12 ( 9 unt; 0 nHn; 7 RR)
% Number of literals : 15 ( 2 equ; 7 neg)
% Maximal clause size : 2 ( 1 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 8 ( 3 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(prove_null_class_in_its_singleton_1,negated_conjecture,
~ member(null_class,singleton(null_class)),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_null_class_in_its_singleton_1) ).
cnf(singleton_set,axiom,
unordered_pair(X1,X1) = singleton(X1),
file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',singleton_set) ).
cnf(unordered_pair3,axiom,
( ~ member(X1,universal_class)
| member(X1,unordered_pair(X2,X1)) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',unordered_pair3) ).
cnf(null_class_is_a_set,axiom,
member(null_class,universal_class),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_is_a_set) ).
cnf(c_0_4,negated_conjecture,
~ member(null_class,singleton(null_class)),
inference(fof_simplification,[status(thm)],[prove_null_class_in_its_singleton_1]) ).
cnf(c_0_5,negated_conjecture,
~ member(null_class,singleton(null_class)),
c_0_4 ).
cnf(c_0_6,axiom,
unordered_pair(X1,X1) = singleton(X1),
singleton_set ).
cnf(c_0_7,plain,
( ~ member(X1,universal_class)
| member(X1,unordered_pair(X2,X1)) ),
inference(fof_simplification,[status(thm)],[unordered_pair3]) ).
cnf(c_0_8,negated_conjecture,
~ member(null_class,unordered_pair(null_class,null_class)),
inference(rw,[status(thm)],[c_0_5,c_0_6]) ).
cnf(c_0_9,plain,
( ~ member(X1,universal_class)
| member(X1,unordered_pair(X2,X1)) ),
c_0_7 ).
cnf(c_0_10,axiom,
member(null_class,universal_class),
null_class_is_a_set ).
cnf(c_0_11,negated_conjecture,
$false,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_8,c_0_9]),c_0_10])]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET080-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.05 % Command : run_E /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.12/0.53 % Computer : n008.cluster.edu
% 0.12/0.53 % Model : x86_64 x86_64
% 0.12/0.53 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.53 % Memory : 8046.5625MB
% 0.12/0.53 % OS : Linux 6.8.0-71-generic
% 0.12/0.53 % CPULimit : 300
% 0.12/0.53 % WCLimit : 300
% 0.12/0.53 % DateTime : Mon Sep 21 04:51:26 UTC 2026
% 0.12/0.54 % CPUTime :
% 0.12/0.54 Running run_E /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.12/0.58 Running first-order theorem proving
% 0.12/0.58 Running: /export/starexec/sandbox/solver/bin/eprover --delete-bad-limit=2000000000 --definitional-cnf=24 -s --print-statistics -R --print-version --proof-object --auto-schedule=8 --cpu-limit=300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.17/0.61 % Version: 3.5.1
% 0.17/0.61 % Preprocessing class: FSLSSMSMSSSNFFN.
% 0.17/0.61 % Scheduled 4 strats onto 8 cores with 300 seconds (2400 total)
% 0.17/0.61 % Starting C07_19_nc_SOS_SAT001_MinMin_p005000_rr with 1500s (5) cores
% 0.17/0.61 % Starting new_bool_3 with 300s (1) cores
% 0.17/0.61 % Starting new_bool_1 with 300s (1) cores
% 0.17/0.61 % Starting sh5l with 300s (1) cores
% 0.17/0.61 % new_bool_3 with pid 181121 completed with status 0
% 0.17/0.61 % Result found by new_bool_3
% 0.17/0.61 % Preprocessing class: FSLSSMSMSSSNFFN.
% 0.17/0.61 % Scheduled 4 strats onto 8 cores with 300 seconds (2400 total)
% 0.17/0.61 % Starting C07_19_nc_SOS_SAT001_MinMin_p005000_rr with 1500s (5) cores
% 0.17/0.61 % Starting new_bool_3 with 300s (1) cores
% 0.17/0.61 % (lift_lambdas = 0, lambda_to_forall = 0,unroll_only_formulas = 0, sine = GSinE(CountFormulas,hypos,1.5,,3,20000,1.0))
% 0.17/0.61 % SinE strategy is GSinE(CountFormulas,hypos,1.5,,3,20000,1.0)
% 0.17/0.61 % Search class: FGHSM-FFMF21-MFFFFFNN
% 0.17/0.61 % Scheduled 5 strats onto 1 cores with 300 seconds (300 total)
% 0.17/0.61 % Starting SubtermCWHack with 31s (1) cores
% 0.17/0.61 % SubtermCWHack with pid 181124 completed with status 0
% 0.17/0.61 % Result found by SubtermCWHack
% 0.17/0.61 % Preprocessing class: FSLSSMSMSSSNFFN.
% 0.17/0.61 % Scheduled 4 strats onto 8 cores with 300 seconds (2400 total)
% 0.17/0.61 % Starting C07_19_nc_SOS_SAT001_MinMin_p005000_rr with 1500s (5) cores
% 0.17/0.61 % Starting new_bool_3 with 300s (1) cores
% 0.17/0.61 % (lift_lambdas = 0, lambda_to_forall = 0,unroll_only_formulas = 0, sine = GSinE(CountFormulas,hypos,1.5,,3,20000,1.0))
% 0.17/0.61 % SinE strategy is GSinE(CountFormulas,hypos,1.5,,3,20000,1.0)
% 0.17/0.61 % Search class: FGHSM-FFMF21-MFFFFFNN
% 0.17/0.61 % Scheduled 5 strats onto 1 cores with 300 seconds (300 total)
% 0.17/0.61 % Starting SubtermCWHack with 31s (1) cores
% 0.17/0.61 % Preprocessing time : 0.001 s
% 0.17/0.61
% 0.17/0.61 % Proof found!
% 0.17/0.61 % SZS status Unsatisfiable
% 0.17/0.61 % SZS output start CNFRefutation
% See solution above
% 0.17/0.61 % Parsed axioms : 124
% 0.17/0.61 % Removed by relevancy pruning/SinE : 83
% 0.17/0.61 % Initial clauses : 41
% 0.17/0.61 % Removed in clause preprocessing : 0
% 0.17/0.61 % Initial clauses in saturation : 41
% 0.17/0.61 % Processed clauses : 38
% 0.17/0.61 % ...of these trivial : 3
% 0.17/0.61 % ...subsumed : 6
% 0.17/0.61 % ...remaining for further processing : 29
% 0.17/0.61 % Other redundant clauses eliminated : 2
% 0.17/0.61 % Clauses deleted for lack of memory : 0
% 0.17/0.61 % Backward-subsumed : 0
% 0.17/0.61 % Backward-rewritten : 1
% 0.17/0.61 % Generated clauses : 117
% 0.17/0.61 % ...of the previous two non-redundant : 62
% 0.17/0.61 % ...aggressively subsumed : 0
% 0.17/0.61 % Contextual simplify-reflections : 0
% 0.17/0.61 % Paramodulations : 115
% 0.17/0.61 % Factorizations : 0
% 0.17/0.61 % NegExts : 0
% 0.17/0.61 % Equation resolutions : 2
% 0.17/0.61 % Disequality decompositions : 0
% 0.17/0.61 % Total rewrite steps : 53
% 0.17/0.61 % ...of those cached : 35
% 0.17/0.61 % Propositional unsat checks : 0
% 0.17/0.61 % Propositional check models : 0
% 0.17/0.61 % Propositional check unsatisfiable : 0
% 0.17/0.61 % Propositional clauses : 0
% 0.17/0.61 % Propositional clauses after purity: 0
% 0.17/0.61 % Propositional unsat core size : 0
% 0.17/0.61 % Propositional preprocessing time : 0.000
% 0.17/0.61 % Propositional encoding time : 0.000
% 0.17/0.61 % Propositional solver time : 0.000
% 0.17/0.61 % Success case prop preproc time : 0.000
% 0.17/0.61 % Success case prop encoding time : 0.000
% 0.17/0.61 % Success case prop solver time : 0.000
% 0.17/0.61 % Current number of processed clauses : 26
% 0.17/0.61 % Positive orientable unit clauses : 14
% 0.17/0.61 % Positive unorientable unit clauses: 2
% 0.17/0.61 % Negative unit clauses : 2
% 0.17/0.61 % Non-unit-clauses : 8
% 0.17/0.61 % Current number of unprocessed clauses: 65
% 0.17/0.61 % ...number of literals in the above : 142
% 0.17/0.61 % Current number of archived formulas : 0
% 0.17/0.61 % Current number of archived clauses : 1
% 0.17/0.61 % Clause-clause subsumption calls (NU) : 8
% 0.17/0.61 % Rec. Clause-clause subsumption calls : 8
% 0.17/0.61 % Non-unit clause-clause subsumptions : 2
% 0.17/0.61 % Unit Clause-clause subsumption calls : 0
% 0.17/0.61 % Rewrite failures with RHS unbound : 0
% 0.17/0.61 % BW rewrite match attempts : 15
% 0.17/0.61 % BW rewrite match successes : 10
% 0.17/0.61 % Condensation attempts : 0
% 0.17/0.61 % Condensation successes : 0
% 0.17/0.61 % Termbank termtop insertions : 2242
% 0.17/0.61 % Search garbage collected termcells : 450
% 0.17/0.61
% 0.17/0.61 % -------------------------------------------------
% 0.17/0.61 % User time : 0.004 s
% 0.17/0.61 % System time : 0.002 s
% 0.17/0.61 % Total time : 0.006 s
% 0.17/0.61 % Maximum resident set size: 3732 pages
% 0.17/0.61
% 0.17/0.61 % -------------------------------------------------
% 0.17/0.61 % User time : 0.009 s
% 0.17/0.61 % System time : 0.005 s
% 0.17/0.61 % Total time : 0.014 s
% 0.17/0.61 % Maximum resident set size: 4608 pages
% 0.17/0.61 % E exiting
%------------------------------------------------------------------------------