%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : LCL024-1 : TPTP v9.2.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% Computer : n021.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Tue May 5 04:39:12 PM UTC 2026
% Result : Unsatisfiable 4.41s 3.38s
% Output : CNFRefutation 4.41s
% Verified :
% SZS Type : Refutation
% Derivation depth : 25
% Number of leaves : 3
% Syntax : Number of clauses : 40 ( 15 unt; 0 nHn; 20 RR)
% Number of literals : 72 ( 0 equ; 34 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 6 ( 2 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-1 aty)
% Number of functors : 4 ( 4 usr; 3 con; 0-2 aty)
% Number of variables : 96 ( 1 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(condensed_detachment,axiom,
( is_a_theorem(X2)
| ~ is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(X1) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',condensed_detachment) ).
cnf(xgk,axiom,
is_a_theorem(equivalent(X1,equivalent(equivalent(X2,equivalent(X3,X1)),equivalent(X3,X2)))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',xgk) ).
cnf(prove_pyo,negated_conjecture,
~ is_a_theorem(equivalent(equivalent(equivalent(a,equivalent(b,c)),c),equivalent(b,a))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_pyo) ).
cnf(c_0_3,axiom,
( is_a_theorem(X2)
| ~ is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(X1) ),
condensed_detachment ).
cnf(c_0_4,axiom,
is_a_theorem(equivalent(X1,equivalent(equivalent(X2,equivalent(X3,X1)),equivalent(X3,X2)))),
xgk ).
cnf(c_0_5,plain,
( is_a_theorem(equivalent(equivalent(X1,equivalent(X2,X3)),equivalent(X2,X1)))
| ~ is_a_theorem(X3) ),
inference(spm,[status(thm)],[c_0_3,c_0_4]) ).
cnf(c_0_6,plain,
( is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(equivalent(X2,equivalent(X1,X3)))
| ~ is_a_theorem(X3) ),
inference(spm,[status(thm)],[c_0_3,c_0_5]) ).
cnf(c_0_7,plain,
( is_a_theorem(equivalent(equivalent(X1,equivalent(X2,X3)),X3))
| ~ is_a_theorem(equivalent(X2,X1)) ),
inference(spm,[status(thm)],[c_0_6,c_0_4]) ).
cnf(c_0_8,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(X2,equivalent(X3,X1)))
| ~ is_a_theorem(equivalent(X3,X2)) ),
inference(spm,[status(thm)],[c_0_3,c_0_7]) ).
cnf(c_0_9,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(X2,equivalent(X1,equivalent(X2,X3))))
| ~ is_a_theorem(X3) ),
inference(spm,[status(thm)],[c_0_8,c_0_5]) ).
cnf(c_0_10,plain,
( is_a_theorem(equivalent(X1,equivalent(X2,X2)))
| ~ is_a_theorem(X1) ),
inference(spm,[status(thm)],[c_0_9,c_0_4]) ).
cnf(c_0_11,plain,
( is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(equivalent(equivalent(X2,equivalent(X1,X3)),X3)) ),
inference(spm,[status(thm)],[c_0_8,c_0_4]) ).
cnf(c_0_12,plain,
( is_a_theorem(equivalent(X1,X1))
| ~ is_a_theorem(X2) ),
inference(spm,[status(thm)],[c_0_3,c_0_10]) ).
cnf(c_0_13,plain,
( is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(equivalent(X2,equivalent(X1,equivalent(X3,X3)))) ),
inference(spm,[status(thm)],[c_0_11,c_0_10]) ).
cnf(c_0_14,plain,
is_a_theorem(equivalent(X1,X1)),
inference(spm,[status(thm)],[c_0_12,c_0_4]) ).
cnf(c_0_15,plain,
is_a_theorem(equivalent(equivalent(X1,equivalent(X1,X2)),X2)),
inference(spm,[status(thm)],[c_0_13,c_0_4]) ).
cnf(c_0_16,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(X2) ),
inference(spm,[status(thm)],[c_0_8,c_0_10]) ).
cnf(c_0_17,plain,
is_a_theorem(equivalent(X1,equivalent(X1,equivalent(X2,X2)))),
inference(spm,[status(thm)],[c_0_13,c_0_14]) ).
cnf(c_0_18,plain,
is_a_theorem(equivalent(X1,equivalent(X2,equivalent(X2,equivalent(X1,equivalent(X3,X3)))))),
inference(spm,[status(thm)],[c_0_13,c_0_15]) ).
cnf(c_0_19,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(X1,equivalent(X2,X2))) ),
inference(spm,[status(thm)],[c_0_16,c_0_17]) ).
cnf(c_0_20,plain,
( is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(equivalent(X1,equivalent(X2,equivalent(X3,X3)))) ),
inference(spm,[status(thm)],[c_0_6,c_0_18]) ).
cnf(c_0_21,plain,
( is_a_theorem(equivalent(X1,equivalent(X2,equivalent(X3,X3))))
| ~ is_a_theorem(equivalent(X2,X1)) ),
inference(spm,[status(thm)],[c_0_19,c_0_7]) ).
cnf(c_0_22,plain,
( is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(equivalent(X2,X1)) ),
inference(spm,[status(thm)],[c_0_20,c_0_21]) ).
cnf(c_0_23,plain,
is_a_theorem(equivalent(equivalent(equivalent(X1,equivalent(X2,X3)),equivalent(X2,X1)),X3)),
inference(spm,[status(thm)],[c_0_22,c_0_4]) ).
cnf(c_0_24,plain,
is_a_theorem(equivalent(X1,equivalent(X2,equivalent(X1,X2)))),
inference(spm,[status(thm)],[c_0_11,c_0_23]) ).
cnf(c_0_25,plain,
is_a_theorem(equivalent(equivalent(X1,equivalent(X2,X1)),X2)),
inference(spm,[status(thm)],[c_0_22,c_0_24]) ).
cnf(c_0_26,plain,
is_a_theorem(equivalent(X1,equivalent(X2,equivalent(equivalent(X1,equivalent(X3,X3)),X2)))),
inference(spm,[status(thm)],[c_0_13,c_0_25]) ).
cnf(c_0_27,plain,
( is_a_theorem(equivalent(X1,equivalent(X2,equivalent(X3,X1))))
| ~ is_a_theorem(equivalent(X3,X2)) ),
inference(spm,[status(thm)],[c_0_22,c_0_7]) ).
cnf(c_0_28,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(equivalent(X2,equivalent(X3,X1)),equivalent(X3,X2))) ),
inference(spm,[status(thm)],[c_0_16,c_0_4]) ).
cnf(c_0_29,plain,
( is_a_theorem(equivalent(equivalent(X1,equivalent(X2,X2)),X3))
| ~ is_a_theorem(equivalent(X3,X1)) ),
inference(spm,[status(thm)],[c_0_8,c_0_26]) ).
cnf(c_0_30,plain,
( is_a_theorem(equivalent(X1,X2))
| ~ is_a_theorem(equivalent(X3,X2))
| ~ is_a_theorem(equivalent(X3,X1)) ),
inference(spm,[status(thm)],[c_0_6,c_0_27]) ).
cnf(c_0_31,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(equivalent(X1,X2),X2)) ),
inference(spm,[status(thm)],[c_0_28,c_0_29]) ).
cnf(c_0_32,plain,
( is_a_theorem(equivalent(X1,equivalent(X2,equivalent(X3,X2))))
| ~ is_a_theorem(equivalent(X3,X1)) ),
inference(spm,[status(thm)],[c_0_30,c_0_24]) ).
cnf(c_0_33,plain,
( is_a_theorem(X1)
| ~ is_a_theorem(equivalent(X2,equivalent(X1,equivalent(X3,equivalent(X2,X3))))) ),
inference(spm,[status(thm)],[c_0_31,c_0_32]) ).
cnf(c_0_34,plain,
is_a_theorem(equivalent(equivalent(X1,X2),equivalent(X2,X1))),
inference(spm,[status(thm)],[c_0_33,c_0_4]) ).
cnf(c_0_35,plain,
( is_a_theorem(equivalent(X1,equivalent(X2,X3)))
| ~ is_a_theorem(equivalent(equivalent(X3,X2),X1)) ),
inference(spm,[status(thm)],[c_0_30,c_0_34]) ).
cnf(c_0_36,plain,
is_a_theorem(equivalent(X1,equivalent(equivalent(X2,X3),equivalent(X3,equivalent(X2,X1))))),
inference(spm,[status(thm)],[c_0_35,c_0_23]) ).
cnf(c_0_37,negated_conjecture,
~ is_a_theorem(equivalent(equivalent(equivalent(a,equivalent(b,c)),c),equivalent(b,a))),
prove_pyo ).
cnf(c_0_38,plain,
( is_a_theorem(equivalent(equivalent(X1,X2),X3))
| ~ is_a_theorem(equivalent(X2,equivalent(X1,X3))) ),
inference(spm,[status(thm)],[c_0_6,c_0_36]) ).
cnf(c_0_39,negated_conjecture,
$false,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_37,c_0_38]),c_0_4])]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.11 % Problem : LCL024-1 : TPTP v9.2.1. Released v1.0.0.
% 0.00/0.11 % Command : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.15/0.32 % Computer : n021.cluster.edu
% 0.15/0.32 % Model : x86_64 x86_64
% 0.15/0.32 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.32 % Memory : 8042.1875MB
% 0.15/0.32 % OS : Linux 3.10.0-693.el7.x86_64
% 0.15/0.32 % CPULimit : 300
% 0.15/0.32 % WCLimit : 300
% 0.15/0.32 % DateTime : Mon May 4 21:53:25 EDT 2026
% 0.15/0.32 % CPUTime :
% 0.15/0.33 % start to proof: theBenchmark
% 4.41/3.38 % Version : CSE_E---1.7
% 4.41/3.38 % Problem : theBenchmark.p
% 4.41/3.38 % SZS status Unsatisfiable for theBenchmark.p
% 4.41/3.38 % SZS output start CNFRefutation
% See solution above
% 4.41/3.39 % Total time : 2.372s
%------------------------------------------------------------------------------