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FindProof---0.1.UNS-Prf.s

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%------------------------------------------------------------------------------
% File     : FindProof---0.1
% Problem  : BOO009-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300

% Computer : n004.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 12:59:34 PM UTC 2026

% Result   : Unsatisfiable 37.94s 20.26s
% Output   : Proof 37.94s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   27
%            Number of leaves      :   15
% Syntax   : Number of formulae    :  125 ( 105 unt;   0 def)
%            Number of atoms       :  189 (  76 equ)
%            Maximal formula atoms :    5 (   1 avg)
%            Number of connectives :  134 (  70   ~;  64   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   13 (   2 avg)
%            Maximal term depth    :    5 (   1 avg)
%            Number of predicates  :    4 (   2 usr;   1 prp; 0-3 aty)
%            Number of functors    :    9 (   9 usr;   5 con; 0-4 aty)
%            Number of variables   :  278 (  14 sgn  78   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
cnf(f12,axiom,
    ( product(V1,V2,V4)
    | ~ sum(X,V3,V4)
    | ~ product(Y,Z,V3)
    | ~ sum(X,Z,V2)
    | ~ sum(X,Y,V1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',distributivity5) ).

fof(f12_nnf,plain,
    ! [X,Y,V1,Z,V2,V3,V4] :
      ( product(V1,V2,V4)
      | ~ sum(X,V3,V4)
      | ~ product(Y,Z,V3)
      | ~ sum(X,Z,V2)
      | ~ sum(X,Y,V1) ),
    inference(nnf_transformation,[status(thm)],[f12]) ).

fof(f12_sk,plain,
    ! [X,Y,V1,Z,V2,V3,V4] :
      ( product(V1,V2,V4)
      | ~ sum(X,V3,V4)
      | ~ product(Y,Z,V3)
      | ~ sum(X,Z,V2)
      | ~ sum(X,Y,V1) ),
    inference(skolemisation,[status(esa)],[f12_nnf]) ).

cnf(c12,plain,
    ( product(X2,X4,X6)
    | ~ sum(X0,X5,X6)
    | ~ product(X1,X3,X5)
    | ~ sum(X0,X3,X4)
    | ~ sum(X0,X1,X2) ),
    inference(cnf_transformation,[status(esa)],[f12_sk]) ).

cnf(hi12,axiom,
    ifeq(sum(X0,X1,X2),true,ifeq(sum(X0,X3,X4),true,ifeq(product(X1,X3,X5),true,ifeq(sum(X0,X5,X6),true,product(X2,X4,X6),true),true),true),true) = true,
    inference(equality_encoding,[status(esa)],[c12]) ).

cnf(f0,axiom,
    sum(X,Y,add(X,Y)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',closure_of_addition) ).

fof(f0_nnf,plain,
    ! [X,Y] : sum(X,Y,add(X,Y)),
    inference(nnf_transformation,[status(thm)],[f0]) ).

fof(f0_sk,plain,
    ! [X,Y] : sum(X,Y,add(X,Y)),
    inference(skolemisation,[status(esa)],[f0_nnf]) ).

cnf(c0,plain,
    sum(X0,X1,add(X0,X1)),
    inference(cnf_transformation,[status(esa)],[f0_sk]) ).

cnf(hi0,axiom,
    sum(X0,X1,add(X0,X1)) = true,
    inference(equality_encoding,[status(esa)],[c0]) ).

cnf(f1,axiom,
    product(X,Y,multiply(X,Y)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',closure_of_multiplication) ).

fof(f1_nnf,plain,
    ! [X,Y] : product(X,Y,multiply(X,Y)),
    inference(nnf_transformation,[status(thm)],[f1]) ).

fof(f1_sk,plain,
    ! [X,Y] : product(X,Y,multiply(X,Y)),
    inference(skolemisation,[status(esa)],[f1_nnf]) ).

cnf(c1,plain,
    product(X0,X1,multiply(X0,X1)),
    inference(cnf_transformation,[status(esa)],[f1_sk]) ).

cnf(hi1,axiom,
    product(X0,X1,multiply(X0,X1)) = true,
    inference(equality_encoding,[status(esa)],[c1]) ).

cnf(t212,plain,
    product(add(X1,X2),add(X1,X3),add(X1,multiply(X2,X3))) = true,
    inference(hyper_resolution,[status(thm)],[hi12,hi0,hi0,hi1,hi0]) ).

cnf(t1976,plain,
    product(add(X1,X2),add(X1,X3),add(X1,multiply(X2,X3))) = true,
    inference(orient,[status(thm)],[t212]) ).

cnf(f21,axiom,
    ( U = V
    | ~ product(X,Y,V)
    | ~ product(X,Y,U) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',multiplication_is_well_defined) ).

fof(f21_nnf,plain,
    ! [X,Y,U,V] :
      ( U = V
      | ~ product(X,Y,V)
      | ~ product(X,Y,U) ),
    inference(nnf_transformation,[status(thm)],[f21]) ).

fof(f21_sk,plain,
    ! [X,Y,U,V] :
      ( U = V
      | ~ product(X,Y,V)
      | ~ product(X,Y,U) ),
    inference(skolemisation,[status(esa)],[f21_nnf]) ).

cnf(c21,plain,
    ( X2 = X3
    | ~ product(X0,X1,X3)
    | ~ product(X0,X1,X2) ),
    inference(cnf_transformation,[status(esa)],[f21_sk]) ).

cnf(t242,plain,
    ifeq(product(X1,X2,X3),true,ifeq(product(X1,X2,X4),true,X3,X4),X4) = X4,
    inference(equality_encoding,[status(esa)],[c21]) ).

cnf(t263,plain,
    ifeq(product(X1,X2,X3),true,ifeq(product(X1,X2,X4),true,X3,X4),X4) = X4,
    inference(orient,[status(thm)],[t242]) ).

cnf(f7,axiom,
    product(X,multiplicative_identity,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',multiplicative_identity2) ).

fof(f7_nnf,plain,
    ! [X] : product(X,multiplicative_identity,X),
    inference(nnf_transformation,[status(thm)],[f7]) ).

fof(f7_sk,plain,
    ! [X] : product(X,multiplicative_identity,X),
    inference(skolemisation,[status(esa)],[f7_nnf]) ).

cnf(c7,plain,
    product(X0,multiplicative_identity,X0),
    inference(cnf_transformation,[status(esa)],[f7_sk]) ).

cnf(t12,plain,
    product(X1,multiplicative_identity,X1) = true,
    inference(equality_encoding,[status(esa)],[c7]) ).

cnf(t1573,plain,
    product(X1,multiplicative_identity,X1) = true,
    inference(orient,[status(thm)],[t12]) ).

cnf(t1574,plain,
    X1 = ifeq(true,true,ifeq(product(X2,multiplicative_identity,X1),true,X2,X1),X1),
    inference(cp,[status(thm)],[t263,t1573]) ).

cnf(t21,plain,
    ifeq(X1,X1,X2,X3) = X2,
    introduced(definition) ).

cnf(t260,plain,
    ifeq(X1,X1,X2,X3) = X2,
    inference(orient,[status(thm)],[t21]) ).

cnf(t7094,plain,
    X1 = ifeq(product(X2,multiplicative_identity,X1),true,X2,X1),
    inference(step,[status(thm)],[t1574,t260]) ).

cnf(t6580,plain,
    ifeq(product(X1,multiplicative_identity,X2),true,X1,X2) = X2,
    inference(orient,[status(thm)],[t7094]) ).

cnf(f9,axiom,
    ( product(X,V3,V4)
    | ~ sum(V1,V2,V4)
    | ~ sum(Y,Z,V3)
    | ~ product(X,Z,V2)
    | ~ product(X,Y,V1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',distributivity2) ).

fof(f9_nnf,plain,
    ! [X,Y,V1,Z,V2,V3,V4] :
      ( product(X,V3,V4)
      | ~ sum(V1,V2,V4)
      | ~ sum(Y,Z,V3)
      | ~ product(X,Z,V2)
      | ~ product(X,Y,V1) ),
    inference(nnf_transformation,[status(thm)],[f9]) ).

fof(f9_sk,plain,
    ! [X,Y,V1,Z,V2,V3,V4] :
      ( product(X,V3,V4)
      | ~ sum(V1,V2,V4)
      | ~ sum(Y,Z,V3)
      | ~ product(X,Z,V2)
      | ~ product(X,Y,V1) ),
    inference(skolemisation,[status(esa)],[f9_nnf]) ).

cnf(c9,plain,
    ( product(X0,X5,X6)
    | ~ sum(X2,X4,X6)
    | ~ sum(X1,X3,X5)
    | ~ product(X0,X3,X4)
    | ~ product(X0,X1,X2) ),
    inference(cnf_transformation,[status(esa)],[f9_sk]) ).

cnf(hi9,axiom,
    ifeq(product(X0,X1,X2),true,ifeq(product(X0,X3,X4),true,ifeq(sum(X1,X3,X5),true,ifeq(sum(X2,X4,X6),true,product(X0,X5,X6),true),true),true),true) = true,
    inference(equality_encoding,[status(esa)],[c9]) ).

cnf(f18,axiom,
    product(inverse(X),X,additive_identity),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',multiplicative_inverse1) ).

fof(f18_nnf,plain,
    ! [X] : product(inverse(X),X,additive_identity),
    inference(nnf_transformation,[status(thm)],[f18]) ).

fof(f18_sk,plain,
    ! [X] : product(inverse(X),X,additive_identity),
    inference(skolemisation,[status(esa)],[f18_nnf]) ).

cnf(c18,plain,
    product(inverse(X0),X0,additive_identity),
    inference(cnf_transformation,[status(esa)],[f18_sk]) ).

cnf(hi18,axiom,
    product(inverse(X0),X0,additive_identity) = true,
    inference(equality_encoding,[status(esa)],[c18]) ).

cnf(f5,axiom,
    sum(X,additive_identity,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',additive_identity2) ).

fof(f5_nnf,plain,
    ! [X] : sum(X,additive_identity,X),
    inference(nnf_transformation,[status(thm)],[f5]) ).

fof(f5_sk,plain,
    ! [X] : sum(X,additive_identity,X),
    inference(skolemisation,[status(esa)],[f5_nnf]) ).

cnf(c5,plain,
    sum(X0,additive_identity,X0),
    inference(cnf_transformation,[status(esa)],[f5_sk]) ).

cnf(hi5,axiom,
    sum(X0,additive_identity,X0) = true,
    inference(equality_encoding,[status(esa)],[c5]) ).

cnf(t164,plain,
    product(inverse(X1),add(X2,X1),multiply(inverse(X1),X2)) = true,
    inference(hyper_resolution,[status(thm)],[hi9,hi1,hi18,hi0,hi5]) ).

cnf(t2392,plain,
    product(inverse(X1),add(X2,X1),multiply(inverse(X1),X2)) = true,
    inference(orient,[status(thm)],[t164]) ).

cnf(h20,plain,
    product(add(V0,V1),add(V0,V2),add(V0,multiply(V1,V2))) = true,
    inference(hyper_resolution,[status(thm)],[hi12,hi0,hi0,hi1,hi0]) ).

cnf(f14,axiom,
    ( product(V1,V2,V4)
    | ~ sum(V3,X,V4)
    | ~ product(Y,Z,V3)
    | ~ sum(Z,X,V2)
    | ~ sum(Y,X,V1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',distributivity7) ).

fof(f14_nnf,plain,
    ! [Y,X,V1,Z,V2,V3,V4] :
      ( product(V1,V2,V4)
      | ~ sum(V3,X,V4)
      | ~ product(Y,Z,V3)
      | ~ sum(Z,X,V2)
      | ~ sum(Y,X,V1) ),
    inference(nnf_transformation,[status(thm)],[f14]) ).

fof(f14_sk,plain,
    ! [Y,X,V1,Z,V2,V3,V4] :
      ( product(V1,V2,V4)
      | ~ sum(V3,X,V4)
      | ~ product(Y,Z,V3)
      | ~ sum(Z,X,V2)
      | ~ sum(Y,X,V1) ),
    inference(skolemisation,[status(esa)],[f14_nnf]) ).

cnf(c14,plain,
    ( product(X2,X4,X6)
    | ~ sum(X5,X1,X6)
    | ~ product(X0,X3,X5)
    | ~ sum(X3,X1,X4)
    | ~ sum(X0,X1,X2) ),
    inference(cnf_transformation,[status(esa)],[f14_sk]) ).

cnf(hi14,axiom,
    ifeq(sum(X0,X1,X2),true,ifeq(sum(X3,X1,X4),true,ifeq(product(X0,X3,X5),true,ifeq(sum(X5,X1,X6),true,product(X2,X4,X6),true),true),true),true) = true,
    inference(equality_encoding,[status(esa)],[c14]) ).

cnf(f4,axiom,
    sum(additive_identity,X,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',additive_identity1) ).

fof(f4_nnf,plain,
    ! [X] : sum(additive_identity,X,X),
    inference(nnf_transformation,[status(thm)],[f4]) ).

fof(f4_sk,plain,
    ! [X] : sum(additive_identity,X,X),
    inference(skolemisation,[status(esa)],[f4_nnf]) ).

cnf(c4,plain,
    sum(additive_identity,X0,X0),
    inference(cnf_transformation,[status(esa)],[f4_sk]) ).

cnf(hi4,axiom,
    sum(additive_identity,X0,X0) = true,
    inference(equality_encoding,[status(esa)],[c4]) ).

cnf(h7,plain,
    product(V0,add(V1,V0),add(multiply(additive_identity,V1),V0)) = true,
    inference(hyper_resolution,[status(thm)],[hi14,hi4,hi0,hi1,hi0]) ).

cnf(hi21,axiom,
    ifeq(product(X0,X1,X2),true,ifeq(product(X0,X1,X3),true,X2,X3),X3) = X3,
    inference(equality_encoding,[status(esa)],[c21]) ).

cnf(t233,plain,
    add(multiply(additive_identity,X1),add(X1,X2)) = add(X1,multiply(X2,add(X1,X2))),
    inference(hyper_resolution,[status(thm)],[hi21,h7,h20]) ).

cnf(t319,plain,
    add(X1,multiply(X2,add(X1,X2))) = add(multiply(additive_identity,X1),add(X1,X2)),
    inference(orient,[status(thm)],[t233]) ).

cnf(f20,axiom,
    ( U = V
    | ~ sum(X,Y,V)
    | ~ sum(X,Y,U) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',addition_is_well_defined) ).

fof(f20_nnf,plain,
    ! [X,Y,U,V] :
      ( U = V
      | ~ sum(X,Y,V)
      | ~ sum(X,Y,U) ),
    inference(nnf_transformation,[status(thm)],[f20]) ).

fof(f20_sk,plain,
    ! [X,Y,U,V] :
      ( U = V
      | ~ sum(X,Y,V)
      | ~ sum(X,Y,U) ),
    inference(skolemisation,[status(esa)],[f20_nnf]) ).

cnf(c20,plain,
    ( X2 = X3
    | ~ sum(X0,X1,X3)
    | ~ sum(X0,X1,X2) ),
    inference(cnf_transformation,[status(esa)],[f20_sk]) ).

cnf(hi20,axiom,
    ifeq(sum(X0,X1,X2),true,ifeq(sum(X0,X1,X3),true,X2,X3),X3) = X3,
    inference(equality_encoding,[status(esa)],[c20]) ).

cnf(f17,axiom,
    sum(X,inverse(X),multiplicative_identity),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',additive_inverse2) ).

fof(f17_nnf,plain,
    ! [X] : sum(X,inverse(X),multiplicative_identity),
    inference(nnf_transformation,[status(thm)],[f17]) ).

fof(f17_sk,plain,
    ! [X] : sum(X,inverse(X),multiplicative_identity),
    inference(skolemisation,[status(esa)],[f17_nnf]) ).

cnf(c17,plain,
    sum(X0,inverse(X0),multiplicative_identity),
    inference(cnf_transformation,[status(esa)],[f17_sk]) ).

cnf(hi17,axiom,
    sum(X0,inverse(X0),multiplicative_identity) = true,
    inference(equality_encoding,[status(esa)],[c17]) ).

cnf(t8,plain,
    add(X1,inverse(X1)) = multiplicative_identity,
    inference(hyper_resolution,[status(thm)],[hi20,hi0,hi17]) ).

cnf(t438,plain,
    add(X1,inverse(X1)) = multiplicative_identity,
    inference(orient,[status(thm)],[t8]) ).

cnf(t447,plain,
    add(multiply(additive_identity,X1),add(X1,inverse(X1))) = add(X1,multiply(inverse(X1),multiplicative_identity)),
    inference(cp,[status(thm)],[t319,t438]) ).

cnf(t7054,plain,
    add(multiply(additive_identity,X1),multiplicative_identity) = add(X1,multiply(inverse(X1),multiplicative_identity)),
    inference(step,[status(thm)],[t447,t438]) ).

cnf(h14,plain,
    product(V0,V1,add(additive_identity,multiply(V0,V1))) = true,
    inference(hyper_resolution,[status(thm)],[hi12,hi4,hi4,hi1,hi0]) ).

cnf(t189,plain,
    add(additive_identity,multiply(X1,add(X2,X1))) = add(multiply(additive_identity,X2),X1),
    inference(hyper_resolution,[status(thm)],[hi21,h7,h14]) ).

cnf(t3,plain,
    add(additive_identity,X1) = X1,
    inference(hyper_resolution,[status(thm)],[hi20,hi4,hi0]) ).

cnf(t257,plain,
    add(additive_identity,X1) = X1,
    inference(orient,[status(thm)],[t3]) ).

cnf(t7044,plain,
    multiply(X1,add(X2,X1)) = add(multiply(additive_identity,X2),X1),
    inference(step,[status(thm)],[t189,t257]) ).

cnf(t529,plain,
    add(multiply(additive_identity,X1),X2) = multiply(X2,add(X1,X2)),
    inference(orient,[status(thm)],[t7044]) ).

cnf(t7055,plain,
    multiply(multiplicative_identity,add(X1,multiplicative_identity)) = add(X1,multiply(inverse(X1),multiplicative_identity)),
    inference(step,[status(thm)],[t7054,t529]) ).

cnf(f6,axiom,
    product(multiplicative_identity,X,X),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',multiplicative_identity1) ).

fof(f6_nnf,plain,
    ! [X] : product(multiplicative_identity,X,X),
    inference(nnf_transformation,[status(thm)],[f6]) ).

fof(f6_sk,plain,
    ! [X] : product(multiplicative_identity,X,X),
    inference(skolemisation,[status(esa)],[f6_nnf]) ).

cnf(c6,plain,
    product(multiplicative_identity,X0,X0),
    inference(cnf_transformation,[status(esa)],[f6_sk]) ).

cnf(hi6,axiom,
    product(multiplicative_identity,X0,X0) = true,
    inference(equality_encoding,[status(esa)],[c6]) ).

cnf(t18,plain,
    add(additive_identity,multiply(multiplicative_identity,X1)) = X1,
    inference(hyper_resolution,[status(thm)],[hi21,hi6,h14]) ).

cnf(t7041,plain,
    multiply(multiplicative_identity,X1) = X1,
    inference(step,[status(thm)],[t18,t257]) ).

cnf(t259,plain,
    multiply(multiplicative_identity,X1) = X1,
    inference(orient,[status(thm)],[t7041]) ).

cnf(t7056,plain,
    add(X1,multiplicative_identity) = add(X1,multiply(inverse(X1),multiplicative_identity)),
    inference(step,[status(thm)],[t7055,t259]) ).

cnf(hi7,axiom,
    product(X0,multiplicative_identity,X0) = true,
    inference(equality_encoding,[status(esa)],[c7]) ).

cnf(t17,plain,
    add(additive_identity,multiply(X1,multiplicative_identity)) = X1,
    inference(hyper_resolution,[status(thm)],[hi21,hi7,h14]) ).

cnf(t7040,plain,
    multiply(X1,multiplicative_identity) = X1,
    inference(step,[status(thm)],[t17,t257]) ).

cnf(t258,plain,
    multiply(X1,multiplicative_identity) = X1,
    inference(orient,[status(thm)],[t7040]) ).

cnf(t7057,plain,
    add(X1,multiplicative_identity) = add(X1,inverse(X1)),
    inference(step,[status(thm)],[t7056,t258]) ).

cnf(t7058,plain,
    add(X1,multiplicative_identity) = multiplicative_identity,
    inference(step,[status(thm)],[t7057,t438]) ).

cnf(t4321,plain,
    add(X1,multiplicative_identity) = multiplicative_identity,
    inference(orient,[status(thm)],[t7058]) ).

cnf(t4327,plain,
    true = product(inverse(multiplicative_identity),multiplicative_identity,multiply(inverse(multiplicative_identity),X1)),
    inference(cp,[status(thm)],[t2392,t4321]) ).

cnf(t1,plain,
    inverse(multiplicative_identity) = additive_identity,
    inference(hyper_resolution,[status(thm)],[hi21,hi7,hi18]) ).

cnf(t4172,plain,
    inverse(multiplicative_identity) = additive_identity,
    inference(orient,[status(thm)],[t1]) ).

cnf(t7059,plain,
    true = product(additive_identity,multiplicative_identity,multiply(inverse(multiplicative_identity),X1)),
    inference(step,[status(thm)],[t4327,t4172]) ).

cnf(t7060,plain,
    true = product(additive_identity,multiplicative_identity,multiply(additive_identity,X1)),
    inference(step,[status(thm)],[t7059,t4172]) ).

cnf(t4475,plain,
    product(additive_identity,multiplicative_identity,multiply(additive_identity,X1)) = true,
    inference(orient,[status(thm)],[t7060]) ).

cnf(t6585,plain,
    multiply(additive_identity,X1) = ifeq(true,true,additive_identity,multiply(additive_identity,X1)),
    inference(cp,[status(thm)],[t6580,t4475]) ).

cnf(t7100,plain,
    multiply(additive_identity,X1) = additive_identity,
    inference(step,[status(thm)],[t6585,t260]) ).

cnf(t6618,plain,
    multiply(additive_identity,X1) = additive_identity,
    inference(orient,[status(thm)],[t7100]) ).

cnf(t6621,plain,
    true = product(add(X1,additive_identity),add(X1,X2),add(X1,additive_identity)),
    inference(cp,[status(thm)],[t1976,t6618]) ).

cnf(t2,plain,
    add(X1,additive_identity) = X1,
    inference(hyper_resolution,[status(thm)],[hi20,hi0,hi5]) ).

cnf(t256,plain,
    add(X1,additive_identity) = X1,
    inference(orient,[status(thm)],[t2]) ).

cnf(t7119,plain,
    true = product(X1,add(X1,X2),add(X1,additive_identity)),
    inference(step,[status(thm)],[t6621,t256]) ).

cnf(t7120,plain,
    true = product(X1,add(X1,X2),X1),
    inference(step,[status(thm)],[t7119,t256]) ).

cnf(t7012,plain,
    product(X1,add(X1,X2),X1) = true,
    inference(orient,[status(thm)],[t7120]) ).

cnf(f22,negated_conjecture,
    ~ product(x,add(x,y),x),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_equations) ).

fof(f22_nnf,plain,
    ~ product(x,add(x,y),x),
    inference(nnf_transformation,[status(thm)],[f22]) ).

fof(f22_sk,plain,
    ~ product(x,add(x,y),x),
    inference(skolemisation,[status(esa)],[f22_nnf]) ).

cnf(c22,plain,
    ~ product(x,add(x,y),x),
    inference(cnf_transformation,[status(esa)],[f22_sk]) ).

cnf(goal_0,negated_conjecture,
    product(x,add(x,y),x) != true,
    inference(equality_encoding,[status(esa)],[c22]) ).

cnf(g0_0,plain,
    true != true,
    inference(rw,[status(thm)],[goal_0,t7012]) ).

cnf(contradiction_0,plain,
    $false,
    inference(trivial_inequality_removal,[status(thm)],[g0_0]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02  % Problem  : BOO009-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.03  % Command  : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.09/15.38  % Computer : n004.cluster.edu
% 0.09/15.38  % Model    : x86_64 x86_64
% 0.09/15.38  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/15.38  % Memory   : 8046.5625MB
% 0.09/15.38  % OS       : Linux 6.8.0-71-generic
% 0.09/15.38  % CPULimit : 300
% 0.09/15.38  % WCLimit  : 300
% 0.09/15.38  % DateTime : Fri Sep 25 06:28:22 UTC 2026
% 0.09/15.38  % CPUTime  : 
% 0.09/15.38  Running run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 37.94/20.26  % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p
% 37.94/20.26  % SZS output start Proof for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------