%------------------------------------------------------------------------------
% File : FindProof---0.1
% Problem : SET056-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_findproof /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% Computer : n005.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 : Fri Sep 25 02:41:45 PM UTC 2026
% Result : Unsatisfiable 4.69s 1.14s
% Output : Proof 4.69s
% Verified :
% SZS Type : Refutation
% Derivation depth : 20
% Number of leaves : 8
% Syntax : Number of formulae : 47 ( 39 unt; 0 def)
% Number of atoms : 55 ( 34 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 39 ( 31 ~; 8 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 2 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 15 ( 15 usr; 8 con; 0-4 aty)
% Number of variables : 20 ( 0 sgn 8 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
cnf(t95,axiom,
sF1 = ifeq(x,y,false,true),
introduced(definition) ).
cnf(t94,axiom,
sF0 = eq(x,y),
introduced(definition) ).
cnf(f91,negated_conjecture,
x != y,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_equality1_1) ).
fof(f91_nnf,plain,
x != y,
inference(nnf_transformation,[status(thm)],[f91]) ).
fof(f91_sk,plain,
x != y,
inference(skolemisation,[status(esa)],[f91_nnf]) ).
cnf(c91,plain,
x != y,
inference(cnf_transformation,[status(esa)],[f91_sk]) ).
cnf(t5,plain,
eq(x,y) = false,
inference(equality_encoding,[status(esa)],[c91]) ).
cnf(t107,plain,
eq(x,y) = false,
inference(orient,[status(thm)],[t5]) ).
cnf(t517,plain,
sF0 = false,
inference(step,[status(thm)],[t94,t107]) ).
cnf(t114,plain,
false = sF0,
inference(orient,[status(thm)],[t517]) ).
cnf(t530,plain,
sF1 = ifeq(x,y,sF0,true),
inference(step,[status(thm)],[t95,t114]) ).
cnf(t13,plain,
ifeq(x,y,false,true) = true,
inference(equality_encoding,[status(esa)],[c91]) ).
cnf(t525,plain,
ifeq(x,y,sF0,true) = true,
inference(step,[status(thm)],[t13,t114]) ).
cnf(t128,plain,
ifeq(x,y,sF0,true) = true,
inference(orient,[status(thm)],[t525]) ).
cnf(t531,plain,
sF1 = true,
inference(step,[status(thm)],[t530,t128]) ).
cnf(t134,plain,
true = sF1,
inference(orient,[status(thm)],[t531]) ).
cnf(t521,plain,
eq(x,y) = sF0,
inference(step,[status(thm)],[t107,t114]) ).
cnf(t118,plain,
eq(x,y) = sF0,
inference(orient,[status(thm)],[t521]) ).
cnf(t382,plain,
eq(y,y) = sF0,
inference(rw,[status(thm)],[t118]) ).
cnf(t4,plain,
eq(X1,X1) = true,
introduced(definition) ).
cnf(t106,plain,
eq(X1,X1) = true,
inference(orient,[status(thm)],[t4]) ).
cnf(t537,plain,
eq(X1,X1) = sF1,
inference(step,[status(thm)],[t106,t134]) ).
cnf(t140,plain,
eq(X1,X1) = sF1,
inference(orient,[status(thm)],[t537]) ).
cnf(t678,plain,
sF1 = sF0,
inference(step,[status(thm)],[t382,t140]) ).
cnf(t395,plain,
sF1 = sF0,
inference(orient,[status(thm)],[t678]) ).
cnf(t697,plain,
true = sF0,
inference(step,[status(thm)],[t134,t395]) ).
cnf(t414,plain,
true = sF0,
inference(orient,[status(thm)],[t697]) ).
cnf(f23,axiom,
( ~ member(Z,X)
| ~ member(Z,complement(X)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',complement1) ).
fof(f23_nnf,plain,
! [Z,X] :
( ~ member(Z,X)
| ~ member(Z,complement(X)) ),
inference(nnf_transformation,[status(thm)],[f23]) ).
fof(f23_sk,plain,
! [Z,X] :
( ~ member(Z,X)
| ~ member(Z,complement(X)) ),
inference(skolemisation,[status(esa)],[f23_nnf]) ).
cnf(c23,plain,
( ~ member(X0,X1)
| ~ member(X0,complement(X1)) ),
inference(cnf_transformation,[status(esa)],[f23_sk]) ).
cnf(f29,axiom,
( ~ member(Z,domain_of(X))
| restrict(X,singleton(Z),universal_class) != null_class ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',domain1) ).
fof(f29_nnf,plain,
! [X,Z] :
( ~ member(Z,domain_of(X))
| restrict(X,singleton(Z),universal_class) != null_class ),
inference(nnf_transformation,[status(thm)],[f29]) ).
fof(f29_sk,plain,
! [X,Z] :
( ~ member(Z,domain_of(X))
| restrict(X,singleton(Z),universal_class) != null_class ),
inference(skolemisation,[status(esa)],[f29_nnf]) ).
cnf(c29,plain,
( ~ member(X1,domain_of(X0))
| restrict(X0,singleton(X1),universal_class) != null_class ),
inference(cnf_transformation,[status(esa)],[f29_sk]) ).
cnf(f92,negated_conjecture,
~ member(not_subclass_element(x,y),x),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_equality1_2) ).
fof(f92_nnf,plain,
~ member(not_subclass_element(x,y),x),
inference(nnf_transformation,[status(thm)],[f92]) ).
fof(f92_sk,plain,
~ member(not_subclass_element(x,y),x),
inference(skolemisation,[status(esa)],[f92_nnf]) ).
cnf(c92,plain,
~ member(not_subclass_element(x,y),x),
inference(cnf_transformation,[status(esa)],[f92_sk]) ).
cnf(f93,negated_conjecture,
~ member(not_subclass_element(y,x),y),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_equality1_3) ).
fof(f93_nnf,plain,
~ member(not_subclass_element(y,x),y),
inference(nnf_transformation,[status(thm)],[f93]) ).
fof(f93_sk,plain,
~ member(not_subclass_element(y,x),y),
inference(skolemisation,[status(esa)],[f93_nnf]) ).
cnf(c93,plain,
~ member(not_subclass_element(y,x),y),
inference(cnf_transformation,[status(esa)],[f93_sk]) ).
cnf(goal_0,negated_conjecture,
true != false,
inference(equality_encoding,[status(esa)],[c23,c29,c91,c92,c93]) ).
cnf(g0_0,plain,
sF0 != false,
inference(rw,[status(thm)],[goal_0,t414]) ).
cnf(g0_1,plain,
sF0 != sF0,
inference(rw,[status(thm)],[g0_0,t114]) ).
cnf(contradiction_0,plain,
$false,
inference(trivial_inequality_removal,[status(thm)],[g0_1]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SET056-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : run_findproof /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.08/0.36 % Computer : n005.cluster.edu
% 0.08/0.36 % Model : x86_64 x86_64
% 0.08/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.36 % Memory : 8046.5625MB
% 0.08/0.36 % OS : Linux 6.8.0-71-generic
% 0.08/0.36 % CPULimit : 300
% 0.08/0.36 % WCLimit : 300
% 0.08/0.36 % DateTime : Thu Sep 24 09:27:47 UTC 2026
% 0.08/0.36 % CPUTime :
% 0.08/0.36 Running run_findproof /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 4.69/1.14 % SZS status Unsatisfiable for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 4.69/1.14 % SZS output start Proof for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------