TSTP Solution File: LCL109-6 by Drodi---3.6.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Drodi---3.6.0
% Problem  : LCL109-6 : TPTP v8.1.2. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s

% Computer : n024.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 Apr 30 20:26:23 EDT 2024

% Result   : Unsatisfiable 4.32s 0.91s
% Output   : CNFRefutation 4.32s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   33
%            Number of leaves      :   13
% Syntax   : Number of formulae    :  134 ( 134 unt;   0 def)
%            Number of atoms       :  134 ( 133 equ)
%            Maximal formula atoms :    1 (   1 avg)
%            Number of connectives :    7 (   7   ~;   0   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    4 (   3 avg)
%            Maximal term depth    :    7 (   2 avg)
%            Number of predicates  :    2 (   0 usr;   1 prp; 0-2 aty)
%            Number of functors    :    8 (   8 usr;   4 con; 0-2 aty)
%            Number of variables   :  219 ( 219   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [X] : not(X) = xor(X,truth),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f2,axiom,
    ! [X] : xor(X,falsehood) = X,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f4,axiom,
    ! [X] : and_star(X,truth) = X,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f5,axiom,
    ! [X] : and_star(X,falsehood) = falsehood,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f6,axiom,
    ! [X] : and_star(xor(truth,X),X) = falsehood,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f7,axiom,
    ! [X,Y] : xor(X,xor(truth,Y)) = xor(xor(X,truth),Y),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f8,axiom,
    ! [X,Y] : and_star(xor(and_star(xor(truth,X),Y),truth),Y) = and_star(xor(and_star(xor(truth,Y),X),truth),X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f9,axiom,
    ! [X,Y] : xor(X,Y) = xor(Y,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f10,axiom,
    ! [X,Y,Z] : and_star(and_star(X,Y),Z) = and_star(X,and_star(Y,Z)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f11,axiom,
    ! [X,Y] : and_star(X,Y) = and_star(Y,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f12,axiom,
    not(truth) = falsehood,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f13,axiom,
    ! [X,Y] : implies(X,Y) = xor(truth,and_star(X,xor(truth,Y))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f14,negated_conjecture,
    implies(implies(implies(a,b),implies(b,a)),implies(b,a)) != truth,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f15,plain,
    ! [X0] : not(X0) = xor(X0,truth),
    inference(cnf_transformation,[status(esa)],[f1]) ).

fof(f16,plain,
    ! [X0] : xor(X0,falsehood) = X0,
    inference(cnf_transformation,[status(esa)],[f2]) ).

fof(f18,plain,
    ! [X0] : and_star(X0,truth) = X0,
    inference(cnf_transformation,[status(esa)],[f4]) ).

fof(f19,plain,
    ! [X0] : and_star(X0,falsehood) = falsehood,
    inference(cnf_transformation,[status(esa)],[f5]) ).

fof(f20,plain,
    ! [X0] : and_star(xor(truth,X0),X0) = falsehood,
    inference(cnf_transformation,[status(esa)],[f6]) ).

fof(f21,plain,
    ! [X0,X1] : xor(X0,xor(truth,X1)) = xor(xor(X0,truth),X1),
    inference(cnf_transformation,[status(esa)],[f7]) ).

fof(f22,plain,
    ! [X0,X1] : and_star(xor(and_star(xor(truth,X0),X1),truth),X1) = and_star(xor(and_star(xor(truth,X1),X0),truth),X0),
    inference(cnf_transformation,[status(esa)],[f8]) ).

fof(f23,plain,
    ! [X0,X1] : xor(X0,X1) = xor(X1,X0),
    inference(cnf_transformation,[status(esa)],[f9]) ).

fof(f24,plain,
    ! [X0,X1,X2] : and_star(and_star(X0,X1),X2) = and_star(X0,and_star(X1,X2)),
    inference(cnf_transformation,[status(esa)],[f10]) ).

fof(f25,plain,
    ! [X0,X1] : and_star(X0,X1) = and_star(X1,X0),
    inference(cnf_transformation,[status(esa)],[f11]) ).

fof(f26,plain,
    not(truth) = falsehood,
    inference(cnf_transformation,[status(esa)],[f12]) ).

fof(f27,plain,
    ! [X0,X1] : implies(X0,X1) = xor(truth,and_star(X0,xor(truth,X1))),
    inference(cnf_transformation,[status(esa)],[f13]) ).

fof(f28,plain,
    implies(implies(implies(a,b),implies(b,a)),implies(b,a)) != truth,
    inference(cnf_transformation,[status(esa)],[f14]) ).

fof(f29,plain,
    ! [X0,X1] : xor(X0,xor(truth,X1)) = xor(not(X0),X1),
    inference(forward_demodulation,[status(thm)],[f15,f21]) ).

fof(f30,plain,
    ! [X0,X1] : and_star(not(and_star(xor(truth,X0),X1)),X1) = and_star(xor(and_star(xor(truth,X1),X0),truth),X0),
    inference(forward_demodulation,[status(thm)],[f15,f22]) ).

fof(f31,plain,
    ! [X0,X1] : and_star(not(and_star(xor(truth,X0),X1)),X1) = and_star(not(and_star(xor(truth,X1),X0)),X0),
    inference(forward_demodulation,[status(thm)],[f15,f30]) ).

fof(f32,plain,
    ! [X0,X1] : xor(X0,xor(not(truth),X1)) = xor(not(X0),xor(truth,X1)),
    inference(paramodulation,[status(thm)],[f29,f29]) ).

fof(f33,plain,
    ! [X0,X1] : xor(X0,xor(falsehood,X1)) = xor(not(X0),xor(truth,X1)),
    inference(forward_demodulation,[status(thm)],[f26,f32]) ).

fof(f34,plain,
    ! [X0,X1] : xor(X0,xor(falsehood,X1)) = xor(not(not(X0)),X1),
    inference(forward_demodulation,[status(thm)],[f29,f33]) ).

fof(f36,plain,
    ! [X0,X1] : implies(X0,xor(truth,X1)) = xor(truth,and_star(X0,xor(not(truth),X1))),
    inference(paramodulation,[status(thm)],[f29,f27]) ).

fof(f37,plain,
    ! [X0,X1] : implies(X0,xor(truth,X1)) = xor(truth,and_star(X0,xor(falsehood,X1))),
    inference(forward_demodulation,[status(thm)],[f26,f36]) ).

fof(f43,plain,
    ! [X0] : not(and_star(xor(truth,X0),truth)) = and_star(not(and_star(xor(truth,truth),X0)),X0),
    inference(paramodulation,[status(thm)],[f18,f31]) ).

fof(f44,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(not(and_star(xor(truth,truth),X0)),X0),
    inference(forward_demodulation,[status(thm)],[f18,f43]) ).

fof(f45,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(X0,not(and_star(xor(truth,truth),X0))),
    inference(forward_demodulation,[status(thm)],[f25,f44]) ).

fof(f46,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(X0,not(and_star(not(truth),X0))),
    inference(forward_demodulation,[status(thm)],[f15,f45]) ).

fof(f47,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(X0,not(and_star(falsehood,X0))),
    inference(forward_demodulation,[status(thm)],[f26,f46]) ).

fof(f57,plain,
    ! [X0,X1] : and_star(not(and_star(xor(not(truth),X0),X1)),X1) = and_star(not(and_star(xor(truth,X1),xor(truth,X0))),xor(truth,X0)),
    inference(paramodulation,[status(thm)],[f29,f31]) ).

fof(f58,plain,
    ! [X0,X1] : and_star(X0,not(and_star(xor(not(truth),X1),X0))) = and_star(not(and_star(xor(truth,X0),xor(truth,X1))),xor(truth,X1)),
    inference(forward_demodulation,[status(thm)],[f25,f57]) ).

fof(f59,plain,
    ! [X0,X1] : and_star(X0,not(and_star(xor(falsehood,X1),X0))) = and_star(not(and_star(xor(truth,X0),xor(truth,X1))),xor(truth,X1)),
    inference(forward_demodulation,[status(thm)],[f26,f58]) ).

fof(f60,plain,
    ! [X0,X1] : and_star(X0,not(and_star(xor(falsehood,X1),X0))) = and_star(xor(truth,X1),not(and_star(xor(truth,X0),xor(truth,X1)))),
    inference(forward_demodulation,[status(thm)],[f25,f59]) ).

fof(f83,plain,
    ! [X0,X1] : implies(not(and_star(xor(truth,X0),xor(truth,X1))),X1) = xor(truth,and_star(not(and_star(xor(truth,xor(truth,X1)),X0)),X0)),
    inference(paramodulation,[status(thm)],[f31,f27]) ).

fof(f84,plain,
    ! [X0,X1] : implies(not(and_star(xor(truth,X0),xor(truth,X1))),X1) = xor(truth,and_star(X0,not(and_star(xor(truth,xor(truth,X1)),X0)))),
    inference(forward_demodulation,[status(thm)],[f25,f83]) ).

fof(f85,plain,
    ! [X0,X1] : implies(not(and_star(xor(truth,X0),xor(truth,X1))),X1) = xor(truth,and_star(X0,not(and_star(xor(not(truth),X1),X0)))),
    inference(forward_demodulation,[status(thm)],[f29,f84]) ).

fof(f86,plain,
    ! [X0,X1] : implies(not(and_star(xor(truth,X0),xor(truth,X1))),X1) = xor(truth,and_star(X0,not(and_star(xor(falsehood,X1),X0)))),
    inference(forward_demodulation,[status(thm)],[f26,f85]) ).

fof(f151,plain,
    ! [X0,X1,X2] : implies(X0,and_star(X1,xor(falsehood,X2))) = xor(truth,and_star(X0,implies(X1,xor(truth,X2)))),
    inference(paramodulation,[status(thm)],[f37,f27]) ).

fof(f349,plain,
    ! [X0] : xor(X0,xor(falsehood,falsehood)) = not(not(X0)),
    inference(paramodulation,[status(thm)],[f34,f16]) ).

fof(f350,plain,
    ! [X0] : xor(X0,falsehood) = not(not(X0)),
    inference(forward_demodulation,[status(thm)],[f16,f349]) ).

fof(f351,plain,
    ! [X0] : X0 = not(not(X0)),
    inference(forward_demodulation,[status(thm)],[f16,f350]) ).

fof(f352,plain,
    ! [X0] : and_star(X0,not(and_star(falsehood,X0))) = and_star(xor(truth,falsehood),not(and_star(xor(truth,X0),xor(truth,falsehood)))),
    inference(paramodulation,[status(thm)],[f16,f60]) ).

fof(f353,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(xor(truth,falsehood),not(and_star(xor(truth,X0),xor(truth,falsehood)))),
    inference(forward_demodulation,[status(thm)],[f47,f352]) ).

fof(f354,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(truth,not(and_star(xor(truth,X0),xor(truth,falsehood)))),
    inference(forward_demodulation,[status(thm)],[f16,f353]) ).

fof(f355,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(truth,not(and_star(xor(truth,X0),truth))),
    inference(forward_demodulation,[status(thm)],[f16,f354]) ).

fof(f356,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(truth,not(xor(truth,X0))),
    inference(forward_demodulation,[status(thm)],[f18,f355]) ).

fof(f367,plain,
    ! [X0] : implies(X0,xor(truth,falsehood)) = xor(truth,and_star(X0,falsehood)),
    inference(paramodulation,[status(thm)],[f16,f37]) ).

fof(f368,plain,
    ! [X0] : implies(X0,truth) = xor(truth,and_star(X0,falsehood)),
    inference(forward_demodulation,[status(thm)],[f16,f367]) ).

fof(f369,plain,
    ! [X0] : implies(X0,truth) = xor(truth,falsehood),
    inference(forward_demodulation,[status(thm)],[f19,f368]) ).

fof(f370,plain,
    ! [X0] : implies(X0,truth) = truth,
    inference(forward_demodulation,[status(thm)],[f16,f369]) ).

fof(f524,plain,
    truth = not(falsehood),
    inference(paramodulation,[status(thm)],[f26,f351]) ).

fof(f687,plain,
    ! [X0] : not(X0) = xor(truth,X0),
    inference(paramodulation,[status(thm)],[f15,f23]) ).

fof(f688,plain,
    ! [X0] : X0 = xor(falsehood,X0),
    inference(paramodulation,[status(thm)],[f16,f23]) ).

fof(f704,plain,
    ! [X0,X1] : implies(X0,xor(truth,X1)) = xor(truth,and_star(X0,xor(X1,falsehood))),
    inference(paramodulation,[status(thm)],[f23,f37]) ).

fof(f705,plain,
    ! [X0,X1] : implies(X0,not(X1)) = xor(truth,and_star(X0,xor(X1,falsehood))),
    inference(forward_demodulation,[status(thm)],[f687,f704]) ).

fof(f706,plain,
    ! [X0,X1] : implies(X0,not(X1)) = not(and_star(X0,xor(X1,falsehood))),
    inference(forward_demodulation,[status(thm)],[f687,f705]) ).

fof(f707,plain,
    ! [X0,X1] : implies(X0,not(X1)) = not(and_star(X0,X1)),
    inference(forward_demodulation,[status(thm)],[f16,f706]) ).

fof(f743,plain,
    ! [X0,X1] : and_star(not(and_star(xor(truth,X0),X1)),X1) = and_star(not(and_star(xor(X1,truth),X0)),X0),
    inference(paramodulation,[status(thm)],[f23,f31]) ).

fof(f744,plain,
    ! [X0,X1] : and_star(X0,not(and_star(xor(truth,X1),X0))) = and_star(not(and_star(xor(X0,truth),X1)),X1),
    inference(forward_demodulation,[status(thm)],[f25,f743]) ).

fof(f745,plain,
    ! [X0,X1] : and_star(X0,not(and_star(not(X1),X0))) = and_star(not(and_star(xor(X0,truth),X1)),X1),
    inference(forward_demodulation,[status(thm)],[f687,f744]) ).

fof(f746,plain,
    ! [X0,X1] : and_star(X0,not(and_star(not(X1),X0))) = and_star(X1,not(and_star(xor(X0,truth),X1))),
    inference(forward_demodulation,[status(thm)],[f25,f745]) ).

fof(f747,plain,
    ! [X0,X1] : and_star(X0,not(and_star(not(X1),X0))) = and_star(X1,not(and_star(not(X0),X1))),
    inference(forward_demodulation,[status(thm)],[f15,f746]) ).

fof(f970,plain,
    ! [X0,X1] : implies(not(and_star(xor(truth,X0),xor(truth,X1))),X1) = not(and_star(X0,not(and_star(xor(falsehood,X1),X0)))),
    inference(backward_demodulation,[status(thm)],[f687,f86]) ).

fof(f971,plain,
    ! [X0,X1] : implies(not(and_star(not(X0),xor(truth,X1))),X1) = not(and_star(X0,not(and_star(xor(falsehood,X1),X0)))),
    inference(forward_demodulation,[status(thm)],[f687,f970]) ).

fof(f972,plain,
    ! [X0,X1] : implies(not(and_star(not(X0),not(X1))),X1) = not(and_star(X0,not(and_star(xor(falsehood,X1),X0)))),
    inference(forward_demodulation,[status(thm)],[f687,f971]) ).

fof(f973,plain,
    ! [X0,X1] : implies(not(and_star(not(X0),not(X1))),X1) = not(and_star(X0,not(and_star(X1,X0)))),
    inference(forward_demodulation,[status(thm)],[f688,f972]) ).

fof(f983,plain,
    ! [X0,X1,X2] : implies(X0,and_star(X1,xor(falsehood,X2))) = not(and_star(X0,implies(X1,xor(truth,X2)))),
    inference(backward_demodulation,[status(thm)],[f687,f151]) ).

fof(f984,plain,
    ! [X0,X1,X2] : implies(X0,and_star(X1,X2)) = not(and_star(X0,implies(X1,xor(truth,X2)))),
    inference(forward_demodulation,[status(thm)],[f688,f983]) ).

fof(f985,plain,
    ! [X0,X1,X2] : implies(X0,and_star(X1,X2)) = not(and_star(X0,implies(X1,not(X2)))),
    inference(forward_demodulation,[status(thm)],[f687,f984]) ).

fof(f986,plain,
    ! [X0,X1,X2] : implies(X0,and_star(X1,X2)) = not(and_star(X0,not(and_star(X1,X2)))),
    inference(forward_demodulation,[status(thm)],[f707,f985]) ).

fof(f1022,plain,
    ! [X0] : not(xor(truth,X0)) = and_star(truth,not(not(X0))),
    inference(backward_demodulation,[status(thm)],[f687,f356]) ).

fof(f1023,plain,
    ! [X0] : not(not(X0)) = and_star(truth,not(not(X0))),
    inference(forward_demodulation,[status(thm)],[f687,f1022]) ).

fof(f1024,plain,
    ! [X0] : X0 = and_star(truth,not(not(X0))),
    inference(forward_demodulation,[status(thm)],[f351,f1023]) ).

fof(f1025,plain,
    ! [X0] : X0 = and_star(truth,X0),
    inference(forward_demodulation,[status(thm)],[f351,f1024]) ).

fof(f1083,plain,
    ! [X0] : and_star(not(X0),X0) = falsehood,
    inference(backward_demodulation,[status(thm)],[f687,f20]) ).

fof(f1084,plain,
    ! [X0] : and_star(X0,not(X0)) = falsehood,
    inference(forward_demodulation,[status(thm)],[f25,f1083]) ).

fof(f1105,plain,
    ! [X0,X1] : implies(not(and_star(not(X0),not(X1))),X1) = implies(X0,and_star(X1,X0)),
    inference(backward_demodulation,[status(thm)],[f986,f973]) ).

fof(f1146,plain,
    ! [X0,X1] : implies(X0,X1) = not(and_star(X0,not(X1))),
    inference(paramodulation,[status(thm)],[f351,f707]) ).

fof(f1151,plain,
    ! [X0,X1] : implies(implies(not(X0),X1),X1) = implies(X0,and_star(X1,X0)),
    inference(backward_demodulation,[status(thm)],[f1146,f1105]) ).

fof(f1233,plain,
    ! [X0,X1] : and_star(X0,not(and_star(X0,not(X1)))) = and_star(X1,not(and_star(not(X0),X1))),
    inference(paramodulation,[status(thm)],[f25,f747]) ).

fof(f1234,plain,
    ! [X0,X1] : and_star(X0,implies(X0,X1)) = and_star(X1,not(and_star(not(X0),X1))),
    inference(forward_demodulation,[status(thm)],[f1146,f1233]) ).

fof(f1248,plain,
    ! [X0] : and_star(X0,not(and_star(not(truth),X0))) = not(and_star(not(X0),truth)),
    inference(paramodulation,[status(thm)],[f1025,f747]) ).

fof(f1249,plain,
    ! [X0] : and_star(truth,implies(truth,X0)) = not(and_star(not(X0),truth)),
    inference(forward_demodulation,[status(thm)],[f1234,f1248]) ).

fof(f1250,plain,
    ! [X0] : implies(truth,X0) = not(and_star(not(X0),truth)),
    inference(forward_demodulation,[status(thm)],[f1025,f1249]) ).

fof(f1251,plain,
    ! [X0] : implies(truth,X0) = not(not(X0)),
    inference(forward_demodulation,[status(thm)],[f18,f1250]) ).

fof(f1252,plain,
    ! [X0] : implies(truth,X0) = X0,
    inference(forward_demodulation,[status(thm)],[f351,f1251]) ).

fof(f1435,plain,
    ! [X0,X1,X2] : implies(and_star(X0,X1),X2) = not(and_star(X0,and_star(X1,not(X2)))),
    inference(paramodulation,[status(thm)],[f24,f1146]) ).

fof(f1444,plain,
    ! [X0] : implies(X0,X0) = not(falsehood),
    inference(paramodulation,[status(thm)],[f1084,f1146]) ).

fof(f1445,plain,
    ! [X0] : implies(X0,X0) = truth,
    inference(forward_demodulation,[status(thm)],[f524,f1444]) ).

fof(f1446,plain,
    ! [X0,X1] : implies(X0,X1) = not(and_star(not(X1),X0)),
    inference(paramodulation,[status(thm)],[f25,f1146]) ).

fof(f1469,plain,
    ! [X0,X1,X2] : implies(X0,implies(X1,X2)) = not(and_star(X0,and_star(X1,not(X2)))),
    inference(paramodulation,[status(thm)],[f1146,f707]) ).

fof(f1470,plain,
    ! [X0,X1,X2] : implies(X0,implies(X1,X2)) = implies(and_star(X0,X1),X2),
    inference(forward_demodulation,[status(thm)],[f1435,f1469]) ).

fof(f1473,plain,
    ! [X0,X1] : and_star(X0,not(X1)) = not(implies(X0,X1)),
    inference(paramodulation,[status(thm)],[f1146,f351]) ).

fof(f1569,plain,
    ! [X0,X1] : and_star(X0,implies(X0,X1)) = and_star(X1,implies(X1,X0)),
    inference(backward_demodulation,[status(thm)],[f1446,f1234]) ).

fof(f1630,plain,
    ! [X0,X1] : implies(implies(X0,X1),X1) = implies(not(X0),and_star(X1,not(X0))),
    inference(paramodulation,[status(thm)],[f351,f1151]) ).

fof(f1631,plain,
    ! [X0,X1] : implies(implies(X0,X1),X1) = implies(not(X0),not(implies(X1,X0))),
    inference(forward_demodulation,[status(thm)],[f1473,f1630]) ).

fof(f1632,plain,
    ! [X0,X1] : implies(implies(X0,X1),X1) = not(and_star(not(X0),implies(X1,X0))),
    inference(forward_demodulation,[status(thm)],[f707,f1631]) ).

fof(f1633,plain,
    ! [X0,X1] : implies(implies(X0,X1),X1) = implies(implies(X1,X0),X0),
    inference(forward_demodulation,[status(thm)],[f1446,f1632]) ).

fof(f1683,plain,
    ! [X0,X1] : and_star(not(X0),X1) = not(implies(X1,X0)),
    inference(paramodulation,[status(thm)],[f1446,f351]) ).

fof(f1846,plain,
    ! [X0,X1,X2] : implies(not(X0),implies(X1,X2)) = implies(not(implies(X1,X0)),X2),
    inference(paramodulation,[status(thm)],[f1683,f1470]) ).

fof(f1859,plain,
    ! [X0,X1,X2] : implies(X0,implies(X1,X2)) = implies(and_star(X1,X0),X2),
    inference(paramodulation,[status(thm)],[f25,f1470]) ).

fof(f1860,plain,
    ! [X0,X1,X2] : implies(X0,implies(X1,X2)) = implies(X1,implies(X0,X2)),
    inference(forward_demodulation,[status(thm)],[f1470,f1859]) ).

fof(f1943,plain,
    ! [X0,X1,X2] : implies(X0,implies(implies(X0,X1),X2)) = implies(and_star(X1,implies(X1,X0)),X2),
    inference(paramodulation,[status(thm)],[f1569,f1470]) ).

fof(f1944,plain,
    ! [X0,X1,X2] : implies(X0,implies(implies(X0,X1),X2)) = implies(X1,implies(implies(X1,X0),X2)),
    inference(forward_demodulation,[status(thm)],[f1470,f1943]) ).

fof(f1945,plain,
    ! [X0,X1] : implies(implies(not(implies(X0,X1)),X0),X0) = implies(implies(X0,X1),and_star(X1,implies(X1,X0))),
    inference(paramodulation,[status(thm)],[f1569,f1151]) ).

fof(f1946,plain,
    ! [X0,X1] : implies(implies(not(X0),implies(X1,X1)),X1) = implies(implies(X1,X0),and_star(X0,implies(X0,X1))),
    inference(forward_demodulation,[status(thm)],[f1846,f1945]) ).

fof(f1947,plain,
    ! [X0,X1] : implies(implies(not(X0),truth),X1) = implies(implies(X1,X0),and_star(X0,implies(X0,X1))),
    inference(forward_demodulation,[status(thm)],[f1445,f1946]) ).

fof(f1948,plain,
    ! [X0,X1] : implies(truth,X0) = implies(implies(X0,X1),and_star(X1,implies(X1,X0))),
    inference(forward_demodulation,[status(thm)],[f370,f1947]) ).

fof(f1949,plain,
    ! [X0,X1] : X0 = implies(implies(X0,X1),and_star(X1,implies(X1,X0))),
    inference(forward_demodulation,[status(thm)],[f1252,f1948]) ).

fof(f2103,plain,
    ! [X0,X1] : implies(X0,truth) = implies(X1,implies(X0,X1)),
    inference(paramodulation,[status(thm)],[f1445,f1860]) ).

fof(f2104,plain,
    ! [X0,X1] : truth = implies(X0,implies(X1,X0)),
    inference(forward_demodulation,[status(thm)],[f370,f2103]) ).

fof(f2143,plain,
    implies(implies(b,implies(implies(a,b),a)),implies(b,a)) != truth,
    inference(paramodulation,[status(thm)],[f1860,f28]) ).

fof(f2144,plain,
    implies(b,implies(implies(b,implies(implies(a,b),a)),a)) != truth,
    inference(forward_demodulation,[status(thm)],[f1860,f2143]) ).

fof(f2252,plain,
    ! [X0,X1] : implies(X0,X1) = implies(implies(implies(X1,X0),X0),and_star(X1,implies(X1,implies(X0,X1)))),
    inference(paramodulation,[status(thm)],[f1633,f1949]) ).

fof(f2253,plain,
    ! [X0,X1] : implies(X0,X1) = implies(implies(implies(X1,X0),X0),and_star(X1,truth)),
    inference(forward_demodulation,[status(thm)],[f2104,f2252]) ).

fof(f2254,plain,
    ! [X0,X1] : implies(X0,X1) = implies(implies(implies(X1,X0),X0),X1),
    inference(forward_demodulation,[status(thm)],[f18,f2253]) ).

fof(f6643,plain,
    ! [X0,X1] : implies(implies(X0,X1),implies(X1,X0)) = implies(X1,implies(implies(X1,implies(X0,X1)),X0)),
    inference(paramodulation,[status(thm)],[f2254,f1944]) ).

fof(f6644,plain,
    ! [X0,X1] : implies(X0,implies(implies(X1,X0),X1)) = implies(X0,implies(implies(X0,implies(X1,X0)),X1)),
    inference(forward_demodulation,[status(thm)],[f1860,f6643]) ).

fof(f6645,plain,
    ! [X0,X1] : implies(X0,implies(implies(X1,X0),X1)) = implies(X0,implies(truth,X1)),
    inference(forward_demodulation,[status(thm)],[f2104,f6644]) ).

fof(f6646,plain,
    ! [X0,X1] : implies(X0,implies(implies(X1,X0),X1)) = implies(X0,X1),
    inference(forward_demodulation,[status(thm)],[f1252,f6645]) ).

fof(f7022,plain,
    implies(b,implies(implies(b,a),a)) != truth,
    inference(backward_demodulation,[status(thm)],[f6646,f2144]) ).

fof(f7023,plain,
    implies(a,implies(implies(a,b),a)) != truth,
    inference(forward_demodulation,[status(thm)],[f1944,f7022]) ).

fof(f7024,plain,
    truth != truth,
    inference(forward_demodulation,[status(thm)],[f2104,f7023]) ).

fof(f7025,plain,
    $false,
    inference(trivial_equality_resolution,[status(esa)],[f7024]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : LCL109-6 : TPTP v8.1.2. Released v1.0.0.
% 0.11/0.13  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.13/0.34  % Computer : n024.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 300
% 0.13/0.34  % DateTime : Mon Apr 29 20:25:36 EDT 2024
% 0.13/0.34  % CPUTime  : 
% 0.13/0.35  % Drodi V3.6.0
% 4.32/0.91  % Refutation found
% 4.32/0.91  % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 4.32/0.91  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 4.59/0.95  % Elapsed time: 0.586376 seconds
% 4.59/0.95  % CPU time: 4.567784 seconds
% 4.59/0.95  % Total memory used: 95.260 MB
% 4.59/0.95  % Net memory used: 90.824 MB
%------------------------------------------------------------------------------