%------------------------------------------------------------------------------
% File : FindProof---0.1
% Problem : ALG178+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 : n016.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 12:51:49 PM UTC 2026
% Result : Theorem 43.89s 6.04s
% Output : Proof 43.89s
% Verified :
% SZS Type : Refutation
% Derivation depth : 17
% Number of leaves : 5
% Syntax : Number of formulae : 63 ( 45 unt; 0 def)
% Number of atoms : 141 ( 67 equ)
% Maximal formula atoms : 14 ( 2 avg)
% Number of connectives : 121 ( 43 ~; 32 |; 22 &)
% ( 0 <=>; 24 =>; 0 <=; 0 <~>)
% Maximal formula depth : 16 ( 3 avg)
% Maximal term depth : 6 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 8 ( 8 usr; 3 con; 0-4 aty)
% Number of variables : 74 ( 2 sgn 46 !; 2 ?)
% 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(c10,plain,
( h(j(X6)) = X6
| ~ sorti2(X6) ),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(t47,plain,
ifeq(sorti2(X1),true,h(j(X1)),X1) = X1,
inference(equality_encoding,[status(esa)],[c10]) ).
cnf(t257,plain,
ifeq(sorti2(X1),true,h(j(X1)),X1) = X1,
inference(orient,[status(thm)],[t47]) ).
fof(f3,axiom,
~ ! [U] :
( sorti2(U)
=> ! [V] :
( sorti2(V)
=> op2(U,op2(U,V)) = V ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax4) ).
fof(f3_nnf,plain,
? [U] :
( ? [V] :
( op2(U,op2(U,V)) != V
& sorti2(V) )
& sorti2(U) ),
inference(nnf_transformation,[status(thm)],[f3]) ).
fof(f3_sk,plain,
( op2(sk0,op2(sk0,sk1)) != sk1
& sorti2(sk1)
& sorti2(sk0) ),
inference(skolemisation,[status(esa),new_symbols(skolem,[sk0,sk1])],[f3_nnf]) ).
cnf(c4,plain,
sorti2(sk1),
inference(cnf_transformation,[status(esa)],[f3_sk]) ).
cnf(t1,plain,
sorti2(sk1) = true,
inference(equality_encoding,[status(esa)],[c4]) ).
cnf(t903,plain,
sorti2(sk1) = true,
inference(orient,[status(thm)],[t1]) ).
cnf(t904,plain,
sk1 = ifeq(true,true,h(j(sk1)),sk1),
inference(cp,[status(thm)],[t257,t903]) ).
cnf(t4,plain,
ifeq(X1,X1,X2,X3) = X2,
introduced(definition) ).
cnf(t256,plain,
ifeq(X1,X1,X2,X3) = X2,
inference(orient,[status(thm)],[t4]) ).
cnf(t2460,plain,
sk1 = h(j(sk1)),
inference(step,[status(thm)],[t904,t256]) ).
cnf(t1422,plain,
h(j(sk1)) = sk1,
inference(orient,[status(thm)],[t2460]) ).
fof(f2,axiom,
! [U] :
( sorti1(U)
=> ! [V] :
( sorti1(V)
=> op1(U,op1(U,V)) = V ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax3) ).
fof(f2_nnf,plain,
! [U] :
( ! [V] :
( op1(U,op1(U,V)) = V
| ~ sorti1(V) )
| ~ sorti1(U) ),
inference(nnf_transformation,[status(thm)],[f2]) ).
fof(f2_sk,plain,
! [U,V] :
( op1(U,op1(U,V)) = V
| ~ sorti1(V)
| ~ sorti1(U) ),
inference(skolemisation,[status(esa)],[f2_nnf]) ).
cnf(c2,plain,
( op1(X0,op1(X0,X1)) = X1
| ~ sorti1(X1)
| ~ sorti1(X0) ),
inference(cnf_transformation,[status(esa)],[f2_sk]) ).
cnf(t202,plain,
ifeq(sorti1(X1),true,ifeq(sorti1(X2),true,op1(X1,op1(X1,X2)),X2),X2) = X2,
inference(equality_encoding,[status(esa)],[c2]) ).
cnf(t258,plain,
ifeq(sorti1(X1),true,ifeq(sorti1(X2),true,op1(X1,op1(X1,X2)),X2),X2) = X2,
inference(orient,[status(thm)],[t202]) ).
cnf(c9,plain,
( j(op2(X4,X5)) = op1(j(X4),j(X5))
| ~ sorti2(X5)
| ~ sorti2(X4) ),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(hi8,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)],[c9]) ).
cnf(c3,plain,
sorti2(sk0),
inference(cnf_transformation,[status(esa)],[f3_sk]) ).
cnf(hi3,axiom,
sorti2(sk0) = true,
inference(equality_encoding,[status(esa)],[c3]) ).
cnf(hi4,axiom,
sorti2(sk1) = true,
inference(equality_encoding,[status(esa)],[c4]) ).
cnf(t49,plain,
op1(j(sk0),j(sk1)) = j(op2(sk0,sk1)),
inference(hyper_resolution,[status(thm)],[hi8,hi3,hi4]) ).
cnf(t374,plain,
op1(j(sk0),j(sk1)) = j(op2(sk0,sk1)),
inference(orient,[status(thm)],[t49]) ).
cnf(t375,plain,
j(sk1) = ifeq(sorti1(j(sk0)),true,ifeq(sorti1(j(sk1)),true,op1(j(sk0),j(op2(sk0,sk1))),j(sk1)),j(sk1)),
inference(cp,[status(thm)],[t258,t374]) ).
cnf(c7,plain,
( sorti1(j(X1))
| ~ sorti2(X1) ),
inference(cnf_transformation,[status(esa)],[f4_sk]) ).
cnf(t48,plain,
ifeq(sorti2(X1),true,sorti1(j(X1)),true) = true,
inference(equality_encoding,[status(esa)],[c7]) ).
cnf(t1169,plain,
ifeq(sorti2(X1),true,sorti1(j(X1)),true) = true,
inference(orient,[status(thm)],[t48]) ).
cnf(t0,plain,
sorti2(sk0) = true,
inference(equality_encoding,[status(esa)],[c3]) ).
cnf(t907,plain,
sorti2(sk0) = true,
inference(orient,[status(thm)],[t0]) ).
cnf(t1183,plain,
true = ifeq(true,true,sorti1(j(sk0)),true),
inference(cp,[status(thm)],[t1169,t907]) ).
cnf(t2567,plain,
true = sorti1(j(sk0)),
inference(step,[status(thm)],[t1183,t256]) ).
cnf(t1481,plain,
sorti1(j(sk0)) = true,
inference(orient,[status(thm)],[t2567]) ).
cnf(t2673,plain,
j(sk1) = ifeq(true,true,ifeq(sorti1(j(sk1)),true,op1(j(sk0),j(op2(sk0,sk1))),j(sk1)),j(sk1)),
inference(step,[status(thm)],[t375,t1481]) ).
cnf(t2674,plain,
j(sk1) = ifeq(sorti1(j(sk1)),true,op1(j(sk0),j(op2(sk0,sk1))),j(sk1)),
inference(step,[status(thm)],[t2673,t256]) ).
cnf(t1182,plain,
true = ifeq(true,true,sorti1(j(sk1)),true),
inference(cp,[status(thm)],[t1169,t903]) ).
cnf(t2566,plain,
true = sorti1(j(sk1)),
inference(step,[status(thm)],[t1182,t256]) ).
cnf(t1474,plain,
sorti1(j(sk1)) = true,
inference(orient,[status(thm)],[t2566]) ).
cnf(t2675,plain,
j(sk1) = ifeq(true,true,op1(j(sk0),j(op2(sk0,sk1))),j(sk1)),
inference(step,[status(thm)],[t2674,t1474]) ).
cnf(t2676,plain,
j(sk1) = op1(j(sk0),j(op2(sk0,sk1))),
inference(step,[status(thm)],[t2675,t256]) ).
fof(f1,axiom,
! [U] :
( sorti2(U)
=> ! [V] :
( sorti2(V)
=> sorti2(op2(U,V)) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax2) ).
fof(f1_nnf,plain,
! [U] :
( ! [V] :
( sorti2(op2(U,V))
| ~ sorti2(V) )
| ~ sorti2(U) ),
inference(nnf_transformation,[status(thm)],[f1]) ).
fof(f1_sk,plain,
! [U,V] :
( sorti2(op2(U,V))
| ~ sorti2(V)
| ~ sorti2(U) ),
inference(skolemisation,[status(esa)],[f1_nnf]) ).
cnf(c1,plain,
( sorti2(op2(X0,X1))
| ~ sorti2(X1)
| ~ sorti2(X0) ),
inference(cnf_transformation,[status(esa)],[f1_sk]) ).
cnf(hi1,axiom,
ifeq(sorti2(X0),true,ifeq(sorti2(X1),true,sorti2(op2(X0,X1)),true),true) = true,
inference(equality_encoding,[status(esa)],[c1]) ).
cnf(h10,plain,
sorti2(op2(sk0,sk1)) = true,
inference(hyper_resolution,[status(thm)],[hi1,hi3,hi4]) ).
cnf(t138,plain,
op1(j(sk0),j(op2(sk0,sk1))) = j(op2(sk0,op2(sk0,sk1))),
inference(hyper_resolution,[status(thm)],[hi8,hi3,h10]) ).
cnf(t405,plain,
op1(j(sk0),j(op2(sk0,sk1))) = j(op2(sk0,op2(sk0,sk1))),
inference(orient,[status(thm)],[t138]) ).
cnf(t2677,plain,
j(sk1) = j(op2(sk0,op2(sk0,sk1))),
inference(step,[status(thm)],[t2676,t405]) ).
cnf(t2423,plain,
j(op2(sk0,op2(sk0,sk1))) = j(sk1),
inference(orient,[status(thm)],[t2677]) ).
cnf(c5,plain,
op2(sk0,op2(sk0,sk1)) != sk1,
inference(cnf_transformation,[status(esa)],[f3_sk]) ).
cnf(goal_0,negated_conjecture,
op2(sk0,op2(sk0,sk1)) != sk1,
inference(equality_encoding,[status(esa)],[c5]) ).
cnf(g0_0,plain,
op2(sk0,op2(sk0,sk1)) != h(j(sk1)),
inference(rw,[status(thm)],[goal_0,t1422]) ).
cnf(g0_1,plain,
h(j(op2(sk0,op2(sk0,sk1)))) != h(j(sk1)),
inference(rw,[status(thm)],[g0_0]) ).
cnf(g0_2,plain,
h(j(sk1)) != h(j(sk1)),
inference(rw,[status(thm)],[g0_1,t2423]) ).
cnf(contradiction_0,plain,
$false,
inference(trivial_inequality_removal,[status(thm)],[g0_2]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : ALG178+1 : TPTP v9.3.1. Released v2.7.0.
% 0.00/0.03 % Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.10/0.36 % Computer : n016.cluster.edu
% 0.10/0.36 % Model : x86_64 x86_64
% 0.10/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.36 % Memory : 8046.5625MB
% 0.10/0.36 % OS : Linux 6.8.0-71-generic
% 0.10/0.36 % CPULimit : 300
% 0.10/0.36 % WCLimit : 300
% 0.10/0.36 % DateTime : Fri Sep 25 05:03:59 UTC 2026
% 0.10/0.36 % CPUTime :
% 0.10/0.36 Running run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 43.89/6.04 % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p
% 43.89/6.04 % SZS output start Proof for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------