%------------------------------------------------------------------------------
% File : FindProof---0.1
% Problem : ALG202+1 : TPTP v9.3.1. Released v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 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 : Fri Sep 25 12:51:54 PM UTC 2026
% Result : Theorem 16.42s 3.00s
% Output : Proof 16.42s
% Verified :
% SZS Type : Refutation
% Derivation depth : 15
% Number of leaves : 4
% Syntax : Number of formulae : 45 ( 31 unt; 0 def)
% Number of atoms : 108 ( 54 equ)
% Maximal formula atoms : 14 ( 2 avg)
% Number of connectives : 97 ( 34 ~; 23 |; 20 &)
% ( 0 <=>; 20 =>; 0 <=; 0 <~>)
% Maximal formula depth : 16 ( 3 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 2 con; 0-4 aty)
% Number of variables : 56 ( 2 sgn 36 !; 1 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f4,conjecture,
( ( ! [V] :
( sorti2(V)
=> sorti1(j(V)) )
& ! [U] :
( sorti1(U)
=> sorti2(h(U)) ) )
=> ~ ( ! [X2] :
( sorti1(X2)
=> j(h(X2)) = X2 )
& ! [X1] :
( sorti2(X1)
=> h(j(X1)) = X1 )
& ! [Y] :
( sorti2(Y)
=> ! [Z] :
( sorti2(Z)
=> j(op2(Y,Z)) = op1(j(Y),j(Z)) ) )
& ! [W] :
( sorti1(W)
=> ! [X] :
( sorti1(X)
=> h(op1(W,X)) = op2(h(W),h(X)) ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1) ).
fof(f4_neg,negated_conjecture,
~ ( ( ! [V] :
( sorti2(V)
=> sorti1(j(V)) )
& ! [U] :
( sorti1(U)
=> sorti2(h(U)) ) )
=> ~ ( ! [X2] :
( sorti1(X2)
=> j(h(X2)) = X2 )
& ! [X1] :
( sorti2(X1)
=> h(j(X1)) = X1 )
& ! [Y] :
( sorti2(Y)
=> ! [Z] :
( sorti2(Z)
=> j(op2(Y,Z)) = op1(j(Y),j(Z)) ) )
& ! [W] :
( sorti1(W)
=> ! [X] :
( sorti1(X)
=> h(op1(W,X)) = op2(h(W),h(X)) ) ) ) ),
inference(negated_conjecture,[status(cth)],[f4]) ).
fof(f4_nnf,plain,
( ! [X2] :
( j(h(X2)) = X2
| ~ sorti1(X2) )
& ! [X1] :
( h(j(X1)) = X1
| ~ sorti2(X1) )
& ! [Y] :
( ! [Z] :
( j(op2(Y,Z)) = op1(j(Y),j(Z))
| ~ sorti2(Z) )
| ~ sorti2(Y) )
& ! [W] :
( ! [X] :
( h(op1(W,X)) = op2(h(W),h(X))
| ~ sorti1(X) )
| ~ sorti1(W) )
& ! [V] :
( sorti1(j(V))
| ~ sorti2(V) )
& ! [U] :
( sorti2(h(U))
| ~ sorti1(U) ) ),
inference(nnf_transformation,[status(thm)],[f4_neg]) ).
fof(f4_sk,plain,
! [U,V,W,X,Y,Z,X1,X2] :
( ( j(h(X2)) = X2
| ~ sorti1(X2) )
& ( h(j(X1)) = X1
| ~ sorti2(X1) )
& ( j(op2(Y,Z)) = op1(j(Y),j(Z))
| ~ sorti2(Z)
| ~ sorti2(Y) )
& ( h(op1(W,X)) = op2(h(W),h(X))
| ~ sorti1(X)
| ~ sorti1(W) )
& ( sorti1(j(V))
| ~ sorti2(V) )
& ( sorti2(h(U))
| ~ sorti1(U) ) ),
inference(skolemisation,[status(esa)],[f4_nnf]) ).
cnf(c9,plain,
( h(j(X6)) = X6
| ~ sorti2(X6) ),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(t18,plain,
ifeq(sorti2(X1),true,h(j(X1)),X1) = X1,
inference(equality_encoding,[status(esa)],[c9]) ).
cnf(t257,plain,
ifeq(sorti2(X1),true,h(j(X1)),X1) = X1,
inference(orient,[status(thm)],[t18]) ).
fof(f3,axiom,
~ ! [U] :
( sorti2(U)
=> op2(U,U) = U ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax4) ).
fof(f3_nnf,plain,
? [U] :
( op2(U,U) != U
& sorti2(U) ),
inference(nnf_transformation,[status(thm)],[f3]) ).
fof(f3_sk,plain,
( op2(sk0,sk0) != sk0
& sorti2(sk0) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk0])],[f3_nnf]) ).
cnf(c3,plain,
sorti2(sk0),
inference(cnf_transformation,[status(esa)],[f3_sk]) ).
cnf(t0,plain,
sorti2(sk0) = true,
inference(equality_encoding,[status(esa)],[c3]) ).
cnf(t670,plain,
sorti2(sk0) = true,
inference(orient,[status(thm)],[t0]) ).
cnf(t671,plain,
sk0 = ifeq(true,true,h(j(sk0)),sk0),
inference(cp,[status(thm)],[t257,t670]) ).
cnf(t2,plain,
ifeq(X1,X1,X2,X3) = X2,
introduced(definition) ).
cnf(t256,plain,
ifeq(X1,X1,X2,X3) = X2,
inference(orient,[status(thm)],[t2]) ).
cnf(t972,plain,
sk0 = h(j(sk0)),
inference(step,[status(thm)],[t671,t256]) ).
cnf(t917,plain,
h(j(sk0)) = sk0,
inference(orient,[status(thm)],[t972]) ).
fof(f2,axiom,
! [U] :
( sorti1(U)
=> op1(U,U) = U ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax3) ).
fof(f2_nnf,plain,
! [U] :
( op1(U,U) = U
| ~ sorti1(U) ),
inference(nnf_transformation,[status(thm)],[f2]) ).
fof(f2_sk,plain,
! [U] :
( op1(U,U) = U
| ~ sorti1(U) ),
inference(skolemisation,[status(esa)],[f2_nnf]) ).
cnf(c2,plain,
( op1(X0,X0) = X0
| ~ sorti1(X0) ),
inference(cnf_transformation,[status(esa)],[f2_sk]) ).
cnf(t16,plain,
ifeq(sorti1(X1),true,op1(X1,X1),X1) = X1,
inference(equality_encoding,[status(esa)],[c2]) ).
cnf(t259,plain,
ifeq(sorti1(X1),true,op1(X1,X1),X1) = X1,
inference(orient,[status(thm)],[t16]) ).
cnf(c6,plain,
( sorti1(j(X1))
| ~ sorti2(X1) ),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(t19,plain,
ifeq(sorti2(X1),true,sorti1(j(X1)),true) = true,
inference(equality_encoding,[status(esa)],[c6]) ).
cnf(t794,plain,
ifeq(sorti2(X1),true,sorti1(j(X1)),true) = true,
inference(orient,[status(thm)],[t19]) ).
cnf(t799,plain,
true = ifeq(true,true,sorti1(j(sk0)),true),
inference(cp,[status(thm)],[t794,t670]) ).
cnf(t973,plain,
true = sorti1(j(sk0)),
inference(step,[status(thm)],[t799,t256]) ).
cnf(t924,plain,
sorti1(j(sk0)) = true,
inference(orient,[status(thm)],[t973]) ).
cnf(t925,plain,
j(sk0) = ifeq(true,true,op1(j(sk0),j(sk0)),j(sk0)),
inference(cp,[status(thm)],[t259,t924]) ).
cnf(t974,plain,
j(sk0) = op1(j(sk0),j(sk0)),
inference(step,[status(thm)],[t925,t256]) ).
cnf(c8,plain,
( j(op2(X4,X5)) = op1(j(X4),j(X5))
| ~ sorti2(X5)
| ~ sorti2(X4) ),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(hi7,negated_conjecture,
ifeq(sorti2(X0),true,ifeq(sorti2(X1),true,j(op2(X0,X1)),op1(j(X0),j(X1))),op1(j(X0),j(X1))) = op1(j(X0),j(X1)),
inference(equality_encoding,[status(esa)],[c8]) ).
cnf(hi3,axiom,
sorti2(sk0) = true,
inference(equality_encoding,[status(esa)],[c3]) ).
cnf(t20,plain,
op1(j(sk0),j(sk0)) = j(op2(sk0,sk0)),
inference(hyper_resolution,[status(thm)],[hi7,hi3,hi3]) ).
cnf(t263,plain,
op1(j(sk0),j(sk0)) = j(op2(sk0,sk0)),
inference(orient,[status(thm)],[t20]) ).
cnf(t975,plain,
j(sk0) = j(op2(sk0,sk0)),
inference(step,[status(thm)],[t974,t263]) ).
cnf(t930,plain,
j(op2(sk0,sk0)) = j(sk0),
inference(orient,[status(thm)],[t975]) ).
cnf(c4,plain,
op2(sk0,sk0) != sk0,
inference(cnf_transformation,[status(esa)],[f3_sk]) ).
cnf(goal_0,negated_conjecture,
op2(sk0,sk0) != sk0,
inference(equality_encoding,[status(esa)],[c4]) ).
cnf(g0_0,plain,
op2(sk0,sk0) != h(j(sk0)),
inference(rw,[status(thm)],[goal_0,t917]) ).
cnf(g0_1,plain,
h(j(op2(sk0,sk0))) != h(j(sk0)),
inference(rw,[status(thm)],[g0_0]) ).
cnf(g0_2,plain,
h(j(sk0)) != h(j(sk0)),
inference(rw,[status(thm)],[g0_1,t930]) ).
cnf(contradiction_0,plain,
$false,
inference(trivial_inequality_removal,[status(thm)],[g0_2]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : ALG202+1 : TPTP v9.3.1. Released v2.7.0.
% 0.00/0.04 % Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.11/0.79 % Computer : n008.cluster.edu
% 0.11/0.79 % Model : x86_64 x86_64
% 0.11/0.79 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.79 % Memory : 8046.5625MB
% 0.11/0.79 % OS : Linux 6.8.0-71-generic
% 0.11/0.79 % CPULimit : 300
% 0.11/0.79 % WCLimit : 300
% 0.11/0.79 % DateTime : Fri Sep 25 05:03:41 UTC 2026
% 0.11/0.79 % CPUTime :
% 0.11/0.79 Running run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 16.42/3.00 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p
% 16.42/3.00 % SZS output start Proof for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------