%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : CSR115+6 : TPTP v9.2.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox2/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox2/solver/bin/cse --final-prover /export/starexec/sandbox2/solver/bin/eprover --proof-time %d --global-time-limit %d
% Computer : n021.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 May 5 04:15:43 PM UTC 2026
% Result : Theorem 1.79s 2.12s
% Output : CNFRefutation 1.79s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 6
% Syntax : Number of formulae : 32 ( 10 unt; 0 def)
% Number of atoms : 460 ( 0 equ)
% Maximal formula atoms : 341 ( 14 avg)
% Number of connectives : 495 ( 67 ~; 55 |; 370 &)
% ( 0 <=>; 3 =>; 0 <=; 0 <~>)
% Maximal formula depth : 341 ( 16 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 23 ( 22 usr; 1 prp; 0-8 aty)
% Number of functors : 78 ( 78 usr; 74 con; 0-3 aty)
% Number of variables : 86 ( 32 sgn 21 !; 18 ?)
% Comments :
%------------------------------------------------------------------------------
fof(synth_qa07_007_mira_news_1094,conjecture,
? [X1,X2,X3,X4,X5,X6,X7] :
( attr(X1,X2)
& attr(X4,X3)
& attr(X6,X7)
& obj(X5,X1)
& sub(X2,name_1_1)
& sub(X3,name_1_1)
& val(X2,bmw_0)
& val(X3,bmw_0) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',synth_qa07_007_mira_news_1094) ).
fof(ave07_era5_synth_qa07_007_mira_news_1094,hypothesis,
( assoc(autokonzern_1_1,auto__1_1)
& sub(autokonzern_1_1,firmengruppe_1_1)
& attr(c18,c19)
& sub(c18,stadt__1_1)
& sub(c19,name_1_1)
& val(c19,london_0)
& sub(c21,feb_1_1)
& tupl(c34,c18,c21)
& attr(c55667,c55668)
& prop(c55667,bundesdeutsch_1_1)
& sub(c55667,autokonzern_1_1)
& sub(c55668,name_1_1)
& val(c55668,bmw_0)
& prop(c55687,pass__351_1_1)
& sub(c55687,woche_1_1)
& subs(c55693,ankauf__1_1)
& attch(c55986,c55693)
& attr(c55986,c55987)
& prop(c55986,britisch__1_1)
& sub(c55986,firma_1_1)
& sub(c55987,name_1_1)
& val(c55987,rover_0)
& subs(c55995,interesse_1_1)
& subs(c55999,ankauf__1_1)
& attch(c56008,c55999)
& prop(c56008,britisch__1_1)
& sub(c56008,luxusmarke_1_1)
& attr(c56019,c56008)
& attr(c56019,c56020)
& sub(c56019,mensch_1_1)
& sub(c56020,familiename_1_1)
& val(c56020,roll_0)
& attr(c56024,c56025)
& sub(c56024,mensch_1_1)
& sub(c56025,eigenname_1_1)
& val(c56025,royce_0)
& tupl_p8(c56046,c55667,c55669,c55687,c55693,c55995,c55999,c56024)
& assoc(luxusmarke_1_1,luxus__1_1)
& sub(luxusmarke_1_1,marke_1_1)
& sort(autokonzern_1_1,d)
& sort(autokonzern_1_1,io)
& card(autokonzern_1_1,int1)
& etype(autokonzern_1_1,int0)
& fact(autokonzern_1_1,real)
& gener(autokonzern_1_1,ge)
& quant(autokonzern_1_1,one)
& refer(autokonzern_1_1,refer_c)
& varia(autokonzern_1_1,varia_c)
& sort(auto__1_1,d)
& card(auto__1_1,int1)
& etype(auto__1_1,int0)
& fact(auto__1_1,real)
& gener(auto__1_1,ge)
& quant(auto__1_1,one)
& refer(auto__1_1,refer_c)
& varia(auto__1_1,varia_c)
& sort(firmengruppe_1_1,d)
& sort(firmengruppe_1_1,io)
& card(firmengruppe_1_1,int1)
& etype(firmengruppe_1_1,int0)
& fact(firmengruppe_1_1,real)
& gener(firmengruppe_1_1,ge)
& quant(firmengruppe_1_1,one)
& refer(firmengruppe_1_1,refer_c)
& varia(firmengruppe_1_1,varia_c)
& sort(c18,d)
& sort(c18,io)
& card(c18,int1)
& etype(c18,int0)
& fact(c18,real)
& gener(c18,sp)
& quant(c18,one)
& refer(c18,det)
& varia(c18,con)
& sort(c19,na)
& card(c19,int1)
& etype(c19,int0)
& fact(c19,real)
& gener(c19,sp)
& quant(c19,one)
& refer(c19,indet)
& varia(c19,varia_c)
& sort(stadt__1_1,d)
& sort(stadt__1_1,io)
& card(stadt__1_1,int1)
& etype(stadt__1_1,int0)
& fact(stadt__1_1,real)
& gener(stadt__1_1,ge)
& quant(stadt__1_1,one)
& refer(stadt__1_1,refer_c)
& varia(stadt__1_1,varia_c)
& sort(name_1_1,na)
& card(name_1_1,int1)
& etype(name_1_1,int0)
& fact(name_1_1,real)
& gener(name_1_1,ge)
& quant(name_1_1,one)
& refer(name_1_1,refer_c)
& varia(name_1_1,varia_c)
& sort(london_0,fe)
& sort(c21,o)
& card(c21,int1)
& etype(c21,int0)
& fact(c21,real)
& gener(c21,gener_c)
& quant(c21,one)
& refer(c21,refer_c)
& varia(c21,varia_c)
& sort(feb_1_1,o)
& card(feb_1_1,int1)
& etype(feb_1_1,int0)
& fact(feb_1_1,real)
& gener(feb_1_1,ge)
& quant(feb_1_1,one)
& refer(feb_1_1,refer_c)
& varia(feb_1_1,varia_c)
& sort(c34,ent)
& card(c34,card_c)
& etype(c34,etype_c)
& fact(c34,real)
& gener(c34,gener_c)
& quant(c34,quant_c)
& refer(c34,refer_c)
& varia(c34,varia_c)
& sort(c55667,d)
& sort(c55667,io)
& card(c55667,int1)
& etype(c55667,int0)
& fact(c55667,real)
& gener(c55667,sp)
& quant(c55667,one)
& refer(c55667,det)
& varia(c55667,con)
& sort(c55668,na)
& card(c55668,int1)
& etype(c55668,int0)
& fact(c55668,real)
& gener(c55668,sp)
& quant(c55668,one)
& refer(c55668,indet)
& varia(c55668,varia_c)
& sort(bundesdeutsch_1_1,tq)
& sort(bmw_0,fe)
& sort(c55687,me)
& sort(c55687,oa)
& sort(c55687,ta)
& card(c55687,card_c)
& etype(c55687,etype_c)
& fact(c55687,real)
& gener(c55687,sp)
& quant(c55687,quant_c)
& refer(c55687,det)
& varia(c55687,con)
& sort(pass__351_1_1,tq)
& sort(woche_1_1,me)
& sort(woche_1_1,oa)
& sort(woche_1_1,ta)
& card(woche_1_1,card_c)
& etype(woche_1_1,etype_c)
& fact(woche_1_1,real)
& gener(woche_1_1,ge)
& quant(woche_1_1,quant_c)
& refer(woche_1_1,refer_c)
& varia(woche_1_1,varia_c)
& sort(c55693,ad)
& card(c55693,int1)
& etype(c55693,int0)
& fact(c55693,real)
& gener(c55693,sp)
& quant(c55693,one)
& refer(c55693,det)
& varia(c55693,con)
& sort(ankauf__1_1,ad)
& card(ankauf__1_1,int1)
& etype(ankauf__1_1,int0)
& fact(ankauf__1_1,real)
& gener(ankauf__1_1,ge)
& quant(ankauf__1_1,one)
& refer(ankauf__1_1,refer_c)
& varia(ankauf__1_1,varia_c)
& sort(c55986,d)
& sort(c55986,io)
& card(c55986,int1)
& etype(c55986,int0)
& fact(c55986,real)
& gener(c55986,sp)
& quant(c55986,one)
& refer(c55986,det)
& varia(c55986,con)
& sort(c55987,na)
& card(c55987,int1)
& etype(c55987,int0)
& fact(c55987,real)
& gener(c55987,sp)
& quant(c55987,one)
& refer(c55987,indet)
& varia(c55987,varia_c)
& sort(britisch__1_1,nq)
& sort(firma_1_1,d)
& sort(firma_1_1,io)
& card(firma_1_1,int1)
& etype(firma_1_1,int0)
& fact(firma_1_1,real)
& gener(firma_1_1,ge)
& quant(firma_1_1,one)
& refer(firma_1_1,refer_c)
& varia(firma_1_1,varia_c)
& sort(rover_0,fe)
& sort(c55995,as)
& card(c55995,int1)
& etype(c55995,int0)
& fact(c55995,real)
& gener(c55995,gener_c)
& quant(c55995,one)
& refer(c55995,refer_c)
& varia(c55995,varia_c)
& sort(interesse_1_1,as)
& card(interesse_1_1,int1)
& etype(interesse_1_1,int0)
& fact(interesse_1_1,real)
& gener(interesse_1_1,ge)
& quant(interesse_1_1,one)
& refer(interesse_1_1,refer_c)
& varia(interesse_1_1,varia_c)
& sort(c55999,ad)
& card(c55999,int1)
& etype(c55999,int0)
& fact(c55999,real)
& gener(c55999,sp)
& quant(c55999,one)
& refer(c55999,det)
& varia(c55999,con)
& sort(c56008,io)
& sort(c56008,oa)
& card(c56008,int1)
& etype(c56008,int0)
& fact(c56008,real)
& gener(c56008,sp)
& quant(c56008,one)
& refer(c56008,det)
& varia(c56008,con)
& sort(luxusmarke_1_1,io)
& sort(luxusmarke_1_1,oa)
& card(luxusmarke_1_1,int1)
& etype(luxusmarke_1_1,int0)
& fact(luxusmarke_1_1,real)
& gener(luxusmarke_1_1,ge)
& quant(luxusmarke_1_1,one)
& refer(luxusmarke_1_1,refer_c)
& varia(luxusmarke_1_1,varia_c)
& sort(c56019,d)
& card(c56019,int1)
& etype(c56019,int0)
& fact(c56019,real)
& gener(c56019,sp)
& quant(c56019,one)
& refer(c56019,det)
& varia(c56019,con)
& sort(c56020,na)
& card(c56020,int1)
& etype(c56020,int0)
& fact(c56020,real)
& gener(c56020,sp)
& quant(c56020,one)
& refer(c56020,indet)
& varia(c56020,varia_c)
& sort(mensch_1_1,d)
& card(mensch_1_1,int1)
& etype(mensch_1_1,int0)
& fact(mensch_1_1,real)
& gener(mensch_1_1,ge)
& quant(mensch_1_1,one)
& refer(mensch_1_1,refer_c)
& varia(mensch_1_1,varia_c)
& sort(familiename_1_1,na)
& card(familiename_1_1,int1)
& etype(familiename_1_1,int0)
& fact(familiename_1_1,real)
& gener(familiename_1_1,ge)
& quant(familiename_1_1,one)
& refer(familiename_1_1,refer_c)
& varia(familiename_1_1,varia_c)
& sort(roll_0,fe)
& sort(c56024,d)
& card(c56024,int1)
& etype(c56024,int0)
& fact(c56024,real)
& gener(c56024,sp)
& quant(c56024,one)
& refer(c56024,det)
& varia(c56024,con)
& sort(c56025,na)
& card(c56025,int1)
& etype(c56025,int0)
& fact(c56025,real)
& gener(c56025,sp)
& quant(c56025,one)
& refer(c56025,indet)
& varia(c56025,varia_c)
& sort(eigenname_1_1,na)
& card(eigenname_1_1,int1)
& etype(eigenname_1_1,int0)
& fact(eigenname_1_1,real)
& gener(eigenname_1_1,ge)
& quant(eigenname_1_1,one)
& refer(eigenname_1_1,refer_c)
& varia(eigenname_1_1,varia_c)
& sort(royce_0,fe)
& sort(c56046,ent)
& card(c56046,card_c)
& etype(c56046,etype_c)
& fact(c56046,real)
& gener(c56046,gener_c)
& quant(c56046,quant_c)
& refer(c56046,refer_c)
& varia(c56046,varia_c)
& sort(c55669,o)
& card(c55669,int1)
& etype(c55669,int0)
& fact(c55669,real)
& gener(c55669,sp)
& quant(c55669,one)
& refer(c55669,det)
& varia(c55669,varia_c)
& sort(luxus__1_1,io)
& card(luxus__1_1,int1)
& etype(luxus__1_1,int0)
& fact(luxus__1_1,real)
& gener(luxus__1_1,ge)
& quant(luxus__1_1,one)
& refer(luxus__1_1,refer_c)
& varia(luxus__1_1,varia_c)
& sort(marke_1_1,io)
& sort(marke_1_1,oa)
& card(marke_1_1,int1)
& etype(marke_1_1,int0)
& fact(marke_1_1,real)
& gener(marke_1_1,ge)
& quant(marke_1_1,one)
& refer(marke_1_1,refer_c)
& varia(marke_1_1,varia_c) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',ave07_era5_synth_qa07_007_mira_news_1094) ).
fof(loc__geben_1_1_loc,axiom,
! [X1,X2] :
( ( has_fact_leq(X2,real)
& loc(X2,X1) )
=> ? [X3] :
( loc(X3,X1)
& obj(X3,X2)
& subs(X3,geben_1_1) ) ),
file('/export/starexec/sandbox2/benchmark/Axioms/CSR004+0.ax',loc__geben_1_1_loc) ).
fof(has_fact_eq,axiom,
! [X1,X2] :
( fact(X1,X2)
=> has_fact_leq(X1,X2) ),
file('/export/starexec/sandbox2/benchmark/Axioms/CSR004+0.ax',has_fact_eq) ).
fof(state_adjective__in_state,axiom,
! [X1,X2,X3] :
( ( prop(X1,X2)
& state_adjective_state_binding(X2,X3) )
=> ? [X4,X5,X6] :
( in(X6,X4)
& attr(X4,X5)
& loc(X1,X6)
& sub(X4,land_1_1)
& sub(X5,name_1_1)
& val(X5,X3) ) ),
file('/export/starexec/sandbox2/benchmark/Axioms/CSR004+0.ax',state_adjective__in_state) ).
fof(fact_8849,axiom,
state_adjective_state_binding(bundesdeutsch_1_1,bundesrepublik_0),
file('/export/starexec/sandbox2/benchmark/Axioms/CSR004+0.ax',fact_8849) ).
fof(c_0_6,negated_conjecture,
~ ? [X1,X2,X3,X4,X5,X6,X7] :
( attr(X1,X2)
& attr(X4,X3)
& attr(X6,X7)
& obj(X5,X1)
& sub(X2,name_1_1)
& sub(X3,name_1_1)
& val(X2,bmw_0)
& val(X3,bmw_0) ),
inference(assume_negation,[status(cth)],[synth_qa07_007_mira_news_1094]) ).
fof(c_0_7,negated_conjecture,
! [X410,X411,X412,X413,X414,X415,X416] :
( ~ attr(X410,X411)
| ~ attr(X413,X412)
| ~ attr(X415,X416)
| ~ obj(X414,X410)
| ~ sub(X411,name_1_1)
| ~ sub(X412,name_1_1)
| ~ val(X411,bmw_0)
| ~ val(X412,bmw_0) ),
inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[c_0_6])]) ).
cnf(c_0_8,negated_conjecture,
( ~ attr(X1,X2)
| ~ attr(X3,X4)
| ~ attr(X5,X6)
| ~ obj(X7,X1)
| ~ sub(X2,name_1_1)
| ~ sub(X4,name_1_1)
| ~ val(X2,bmw_0)
| ~ val(X4,bmw_0) ),
inference(split_conjunct,[status(thm)],[c_0_7]) ).
cnf(c_0_9,hypothesis,
val(c55668,bmw_0),
inference(split_conjunct,[status(thm)],[ave07_era5_synth_qa07_007_mira_news_1094]) ).
cnf(c_0_10,hypothesis,
sub(c55668,name_1_1),
inference(split_conjunct,[status(thm)],[ave07_era5_synth_qa07_007_mira_news_1094]) ).
cnf(c_0_11,negated_conjecture,
( ~ val(X1,bmw_0)
| ~ attr(X2,c55668)
| ~ attr(X3,X4)
| ~ attr(X5,X1)
| ~ obj(X6,X5)
| ~ sub(X1,name_1_1) ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_8,c_0_9]),c_0_10])]) ).
cnf(c_0_12,hypothesis,
( ~ attr(X1,c55668)
| ~ attr(X2,c55668)
| ~ attr(X3,X4)
| ~ obj(X5,X2) ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_11,c_0_9]),c_0_10])]) ).
cnf(c_0_13,hypothesis,
attr(c55667,c55668),
inference(split_conjunct,[status(thm)],[ave07_era5_synth_qa07_007_mira_news_1094]) ).
cnf(c_0_14,hypothesis,
( ~ attr(X1,c55668)
| ~ attr(X2,X3)
| ~ obj(X4,X1) ),
inference(spm,[status(thm)],[c_0_12,c_0_13]) ).
fof(c_0_15,plain,
! [X491,X492] :
( ( loc(esk11_2(X491,X492),X491)
| ~ has_fact_leq(X492,real)
| ~ loc(X492,X491) )
& ( obj(esk11_2(X491,X492),X492)
| ~ has_fact_leq(X492,real)
| ~ loc(X492,X491) )
& ( subs(esk11_2(X491,X492),geben_1_1)
| ~ has_fact_leq(X492,real)
| ~ loc(X492,X491) ) ),
inference(distribute,[status(thm)],[inference(skolemize,[status(esa)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[loc__geben_1_1_loc])])])]) ).
cnf(c_0_16,hypothesis,
( ~ attr(X1,X2)
| ~ obj(X3,c55667) ),
inference(spm,[status(thm)],[c_0_14,c_0_13]) ).
cnf(c_0_17,plain,
( obj(esk11_2(X1,X2),X2)
| ~ has_fact_leq(X2,real)
| ~ loc(X2,X1) ),
inference(split_conjunct,[status(thm)],[c_0_15]) ).
fof(c_0_18,plain,
! [X479,X480] :
( ~ fact(X479,X480)
| has_fact_leq(X479,X480) ),
inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[has_fact_eq])]) ).
cnf(c_0_19,hypothesis,
( ~ attr(X1,X2)
| ~ loc(c55667,X3)
| ~ has_fact_leq(c55667,real) ),
inference(spm,[status(thm)],[c_0_16,c_0_17]) ).
cnf(c_0_20,plain,
( has_fact_leq(X1,X2)
| ~ fact(X1,X2) ),
inference(split_conjunct,[status(thm)],[c_0_18]) ).
cnf(c_0_21,hypothesis,
fact(c55667,real),
inference(split_conjunct,[status(thm)],[ave07_era5_synth_qa07_007_mira_news_1094]) ).
fof(c_0_22,plain,
! [X441,X442,X443] :
( ( in(esk9_3(X441,X442,X443),esk7_3(X441,X442,X443))
| ~ prop(X441,X442)
| ~ state_adjective_state_binding(X442,X443) )
& ( attr(esk7_3(X441,X442,X443),esk8_3(X441,X442,X443))
| ~ prop(X441,X442)
| ~ state_adjective_state_binding(X442,X443) )
& ( loc(X441,esk9_3(X441,X442,X443))
| ~ prop(X441,X442)
| ~ state_adjective_state_binding(X442,X443) )
& ( sub(esk7_3(X441,X442,X443),land_1_1)
| ~ prop(X441,X442)
| ~ state_adjective_state_binding(X442,X443) )
& ( sub(esk8_3(X441,X442,X443),name_1_1)
| ~ prop(X441,X442)
| ~ state_adjective_state_binding(X442,X443) )
& ( val(esk8_3(X441,X442,X443),X443)
| ~ prop(X441,X442)
| ~ state_adjective_state_binding(X442,X443) ) ),
inference(distribute,[status(thm)],[inference(skolemize,[status(esa)],[inference(variable_rename,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(fof_nnf,[status(thm)],[state_adjective__in_state])])])])]) ).
cnf(c_0_23,hypothesis,
( ~ attr(X1,X2)
| ~ loc(c55667,X3) ),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_20]),c_0_21])]) ).
cnf(c_0_24,plain,
( loc(X1,esk9_3(X1,X2,X3))
| ~ prop(X1,X2)
| ~ state_adjective_state_binding(X2,X3) ),
inference(split_conjunct,[status(thm)],[c_0_22]) ).
cnf(c_0_25,hypothesis,
( ~ state_adjective_state_binding(X1,X2)
| ~ prop(c55667,X1)
| ~ attr(X3,X4) ),
inference(spm,[status(thm)],[c_0_23,c_0_24]) ).
cnf(c_0_26,hypothesis,
prop(c55667,bundesdeutsch_1_1),
inference(split_conjunct,[status(thm)],[ave07_era5_synth_qa07_007_mira_news_1094]) ).
cnf(c_0_27,hypothesis,
( ~ state_adjective_state_binding(bundesdeutsch_1_1,X1)
| ~ attr(X2,X3) ),
inference(spm,[status(thm)],[c_0_25,c_0_26]) ).
cnf(c_0_28,plain,
state_adjective_state_binding(bundesdeutsch_1_1,bundesrepublik_0),
inference(split_conjunct,[status(thm)],[fact_8849]) ).
cnf(c_0_29,hypothesis,
attr(c18,c19),
inference(split_conjunct,[status(thm)],[ave07_era5_synth_qa07_007_mira_news_1094]) ).
cnf(c_0_30,hypothesis,
~ attr(X1,X2),
inference(spm,[status(thm)],[c_0_27,c_0_28]) ).
cnf(c_0_31,hypothesis,
$false,
inference(sr,[status(thm)],[c_0_29,c_0_30]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : CSR115+6 : TPTP v9.2.1. Released v4.0.0.
% 0.00/0.12 % Command : /export/starexec/sandbox2/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox2/solver/bin/cse --final-prover /export/starexec/sandbox2/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.15/0.33 % Computer : n021.cluster.edu
% 0.15/0.33 % Model : x86_64 x86_64
% 0.15/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.33 % Memory : 8042.1875MB
% 0.15/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.15/0.33 % CPULimit : 300
% 0.15/0.33 % WCLimit : 300
% 0.15/0.33 % DateTime : Mon May 4 17:08:10 EDT 2026
% 0.15/0.33 % CPUTime :
% 0.15/0.34 % start to proof: theBenchmark
% 1.79/2.12 % Version : CSE_E---1.7
% 1.79/2.12 % Problem : theBenchmark.p
% 1.79/2.12 % SZS status Theorem for theBenchmark.p
% 1.79/2.12 % SZS output start CNFRefutation
% See solution above
% 1.79/2.12 % Total time : 1.737s
%------------------------------------------------------------------------------