TSTP Solution File: SEU135+2 by iProver---3.8

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : iProver---3.8
% Problem  : SEU135+2 : TPTP v8.1.2. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_iprover %s %d THM

% Computer : n025.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 : Thu Aug 31 17:03:57 EDT 2023

% Result   : Theorem 7.59s 1.65s
% Output   : CNFRefutation 7.59s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   10
%            Number of leaves      :    6
% Syntax   : Number of formulae    :   52 (   7 unt;   0 def)
%            Number of atoms       :  243 (  40 equ)
%            Maximal formula atoms :   14 (   4 avg)
%            Number of connectives :  307 ( 116   ~; 135   |;  49   &)
%                                         (   4 <=>;   3  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   11 (   6 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    3 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :    6 (   6 usr;   2 con; 0-3 aty)
%            Number of variables   :  133 (   5 sgn;  94   !;  12   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f6,axiom,
    ! [X0,X1,X2] :
      ( set_union2(X0,X1) = X2
    <=> ! [X3] :
          ( in(X3,X2)
        <=> ( in(X3,X1)
            | in(X3,X0) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_xboole_0) ).

fof(f9,axiom,
    ! [X0,X1,X2] :
      ( set_difference(X0,X1) = X2
    <=> ! [X3] :
          ( in(X3,X2)
        <=> ( ~ in(X3,X1)
            & in(X3,X0) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d4_xboole_0) ).

fof(f38,conjecture,
    ! [X0,X1] : set_union2(X0,X1) = set_union2(X0,set_difference(X1,X0)),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t39_xboole_1) ).

fof(f39,negated_conjecture,
    ~ ! [X0,X1] : set_union2(X0,X1) = set_union2(X0,set_difference(X1,X0)),
    inference(negated_conjecture,[],[f38]) ).

fof(f69,plain,
    ? [X0,X1] : set_union2(X0,X1) != set_union2(X0,set_difference(X1,X0)),
    inference(ennf_transformation,[],[f39]) ).

fof(f84,plain,
    ! [X0,X1,X2] :
      ( ( set_union2(X0,X1) = X2
        | ? [X3] :
            ( ( ( ~ in(X3,X1)
                & ~ in(X3,X0) )
              | ~ in(X3,X2) )
            & ( in(X3,X1)
              | in(X3,X0)
              | in(X3,X2) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X2)
              | ( ~ in(X3,X1)
                & ~ in(X3,X0) ) )
            & ( in(X3,X1)
              | in(X3,X0)
              | ~ in(X3,X2) ) )
        | set_union2(X0,X1) != X2 ) ),
    inference(nnf_transformation,[],[f6]) ).

fof(f85,plain,
    ! [X0,X1,X2] :
      ( ( set_union2(X0,X1) = X2
        | ? [X3] :
            ( ( ( ~ in(X3,X1)
                & ~ in(X3,X0) )
              | ~ in(X3,X2) )
            & ( in(X3,X1)
              | in(X3,X0)
              | in(X3,X2) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X2)
              | ( ~ in(X3,X1)
                & ~ in(X3,X0) ) )
            & ( in(X3,X1)
              | in(X3,X0)
              | ~ in(X3,X2) ) )
        | set_union2(X0,X1) != X2 ) ),
    inference(flattening,[],[f84]) ).

fof(f86,plain,
    ! [X0,X1,X2] :
      ( ( set_union2(X0,X1) = X2
        | ? [X3] :
            ( ( ( ~ in(X3,X1)
                & ~ in(X3,X0) )
              | ~ in(X3,X2) )
            & ( in(X3,X1)
              | in(X3,X0)
              | in(X3,X2) ) ) )
      & ( ! [X4] :
            ( ( in(X4,X2)
              | ( ~ in(X4,X1)
                & ~ in(X4,X0) ) )
            & ( in(X4,X1)
              | in(X4,X0)
              | ~ in(X4,X2) ) )
        | set_union2(X0,X1) != X2 ) ),
    inference(rectify,[],[f85]) ).

fof(f87,plain,
    ! [X0,X1,X2] :
      ( ? [X3] :
          ( ( ( ~ in(X3,X1)
              & ~ in(X3,X0) )
            | ~ in(X3,X2) )
          & ( in(X3,X1)
            | in(X3,X0)
            | in(X3,X2) ) )
     => ( ( ( ~ in(sK1(X0,X1,X2),X1)
            & ~ in(sK1(X0,X1,X2),X0) )
          | ~ in(sK1(X0,X1,X2),X2) )
        & ( in(sK1(X0,X1,X2),X1)
          | in(sK1(X0,X1,X2),X0)
          | in(sK1(X0,X1,X2),X2) ) ) ),
    introduced(choice_axiom,[]) ).

fof(f88,plain,
    ! [X0,X1,X2] :
      ( ( set_union2(X0,X1) = X2
        | ( ( ( ~ in(sK1(X0,X1,X2),X1)
              & ~ in(sK1(X0,X1,X2),X0) )
            | ~ in(sK1(X0,X1,X2),X2) )
          & ( in(sK1(X0,X1,X2),X1)
            | in(sK1(X0,X1,X2),X0)
            | in(sK1(X0,X1,X2),X2) ) ) )
      & ( ! [X4] :
            ( ( in(X4,X2)
              | ( ~ in(X4,X1)
                & ~ in(X4,X0) ) )
            & ( in(X4,X1)
              | in(X4,X0)
              | ~ in(X4,X2) ) )
        | set_union2(X0,X1) != X2 ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK1])],[f86,f87]) ).

fof(f98,plain,
    ! [X0,X1,X2] :
      ( ( set_difference(X0,X1) = X2
        | ? [X3] :
            ( ( in(X3,X1)
              | ~ in(X3,X0)
              | ~ in(X3,X2) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | in(X3,X2) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X2)
              | in(X3,X1)
              | ~ in(X3,X0) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | ~ in(X3,X2) ) )
        | set_difference(X0,X1) != X2 ) ),
    inference(nnf_transformation,[],[f9]) ).

fof(f99,plain,
    ! [X0,X1,X2] :
      ( ( set_difference(X0,X1) = X2
        | ? [X3] :
            ( ( in(X3,X1)
              | ~ in(X3,X0)
              | ~ in(X3,X2) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | in(X3,X2) ) ) )
      & ( ! [X3] :
            ( ( in(X3,X2)
              | in(X3,X1)
              | ~ in(X3,X0) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | ~ in(X3,X2) ) )
        | set_difference(X0,X1) != X2 ) ),
    inference(flattening,[],[f98]) ).

fof(f100,plain,
    ! [X0,X1,X2] :
      ( ( set_difference(X0,X1) = X2
        | ? [X3] :
            ( ( in(X3,X1)
              | ~ in(X3,X0)
              | ~ in(X3,X2) )
            & ( ( ~ in(X3,X1)
                & in(X3,X0) )
              | in(X3,X2) ) ) )
      & ( ! [X4] :
            ( ( in(X4,X2)
              | in(X4,X1)
              | ~ in(X4,X0) )
            & ( ( ~ in(X4,X1)
                & in(X4,X0) )
              | ~ in(X4,X2) ) )
        | set_difference(X0,X1) != X2 ) ),
    inference(rectify,[],[f99]) ).

fof(f101,plain,
    ! [X0,X1,X2] :
      ( ? [X3] :
          ( ( in(X3,X1)
            | ~ in(X3,X0)
            | ~ in(X3,X2) )
          & ( ( ~ in(X3,X1)
              & in(X3,X0) )
            | in(X3,X2) ) )
     => ( ( in(sK4(X0,X1,X2),X1)
          | ~ in(sK4(X0,X1,X2),X0)
          | ~ in(sK4(X0,X1,X2),X2) )
        & ( ( ~ in(sK4(X0,X1,X2),X1)
            & in(sK4(X0,X1,X2),X0) )
          | in(sK4(X0,X1,X2),X2) ) ) ),
    introduced(choice_axiom,[]) ).

fof(f102,plain,
    ! [X0,X1,X2] :
      ( ( set_difference(X0,X1) = X2
        | ( ( in(sK4(X0,X1,X2),X1)
            | ~ in(sK4(X0,X1,X2),X0)
            | ~ in(sK4(X0,X1,X2),X2) )
          & ( ( ~ in(sK4(X0,X1,X2),X1)
              & in(sK4(X0,X1,X2),X0) )
            | in(sK4(X0,X1,X2),X2) ) ) )
      & ( ! [X4] :
            ( ( in(X4,X2)
              | in(X4,X1)
              | ~ in(X4,X0) )
            & ( ( ~ in(X4,X1)
                & in(X4,X0) )
              | ~ in(X4,X2) ) )
        | set_difference(X0,X1) != X2 ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK4])],[f100,f101]) ).

fof(f113,plain,
    ( ? [X0,X1] : set_union2(X0,X1) != set_union2(X0,set_difference(X1,X0))
   => set_union2(sK8,sK9) != set_union2(sK8,set_difference(sK9,sK8)) ),
    introduced(choice_axiom,[]) ).

fof(f114,plain,
    set_union2(sK8,sK9) != set_union2(sK8,set_difference(sK9,sK8)),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK8,sK9])],[f69,f113]) ).

fof(f127,plain,
    ! [X2,X0,X1,X4] :
      ( in(X4,X1)
      | in(X4,X0)
      | ~ in(X4,X2)
      | set_union2(X0,X1) != X2 ),
    inference(cnf_transformation,[],[f88]) ).

fof(f128,plain,
    ! [X2,X0,X1,X4] :
      ( in(X4,X2)
      | ~ in(X4,X0)
      | set_union2(X0,X1) != X2 ),
    inference(cnf_transformation,[],[f88]) ).

fof(f129,plain,
    ! [X2,X0,X1,X4] :
      ( in(X4,X2)
      | ~ in(X4,X1)
      | set_union2(X0,X1) != X2 ),
    inference(cnf_transformation,[],[f88]) ).

fof(f130,plain,
    ! [X2,X0,X1] :
      ( set_union2(X0,X1) = X2
      | in(sK1(X0,X1,X2),X1)
      | in(sK1(X0,X1,X2),X0)
      | in(sK1(X0,X1,X2),X2) ),
    inference(cnf_transformation,[],[f88]) ).

fof(f131,plain,
    ! [X2,X0,X1] :
      ( set_union2(X0,X1) = X2
      | ~ in(sK1(X0,X1,X2),X0)
      | ~ in(sK1(X0,X1,X2),X2) ),
    inference(cnf_transformation,[],[f88]) ).

fof(f132,plain,
    ! [X2,X0,X1] :
      ( set_union2(X0,X1) = X2
      | ~ in(sK1(X0,X1,X2),X1)
      | ~ in(sK1(X0,X1,X2),X2) ),
    inference(cnf_transformation,[],[f88]) ).

fof(f142,plain,
    ! [X2,X0,X1,X4] :
      ( in(X4,X0)
      | ~ in(X4,X2)
      | set_difference(X0,X1) != X2 ),
    inference(cnf_transformation,[],[f102]) ).

fof(f144,plain,
    ! [X2,X0,X1,X4] :
      ( in(X4,X2)
      | in(X4,X1)
      | ~ in(X4,X0)
      | set_difference(X0,X1) != X2 ),
    inference(cnf_transformation,[],[f102]) ).

fof(f176,plain,
    set_union2(sK8,sK9) != set_union2(sK8,set_difference(sK9,sK8)),
    inference(cnf_transformation,[],[f114]) ).

fof(f193,plain,
    ! [X0,X1,X4] :
      ( in(X4,set_union2(X0,X1))
      | ~ in(X4,X1) ),
    inference(equality_resolution,[],[f129]) ).

fof(f194,plain,
    ! [X0,X1,X4] :
      ( in(X4,set_union2(X0,X1))
      | ~ in(X4,X0) ),
    inference(equality_resolution,[],[f128]) ).

fof(f195,plain,
    ! [X0,X1,X4] :
      ( in(X4,X1)
      | in(X4,X0)
      | ~ in(X4,set_union2(X0,X1)) ),
    inference(equality_resolution,[],[f127]) ).

fof(f199,plain,
    ! [X0,X1,X4] :
      ( in(X4,set_difference(X0,X1))
      | in(X4,X1)
      | ~ in(X4,X0) ),
    inference(equality_resolution,[],[f144]) ).

fof(f201,plain,
    ! [X0,X1,X4] :
      ( in(X4,X0)
      | ~ in(X4,set_difference(X0,X1)) ),
    inference(equality_resolution,[],[f142]) ).

cnf(c_57,plain,
    ( ~ in(sK1(X0,X1,X2),X1)
    | ~ in(sK1(X0,X1,X2),X2)
    | set_union2(X0,X1) = X2 ),
    inference(cnf_transformation,[],[f132]) ).

cnf(c_58,plain,
    ( ~ in(sK1(X0,X1,X2),X0)
    | ~ in(sK1(X0,X1,X2),X2)
    | set_union2(X0,X1) = X2 ),
    inference(cnf_transformation,[],[f131]) ).

cnf(c_59,plain,
    ( set_union2(X0,X1) = X2
    | in(sK1(X0,X1,X2),X0)
    | in(sK1(X0,X1,X2),X1)
    | in(sK1(X0,X1,X2),X2) ),
    inference(cnf_transformation,[],[f130]) ).

cnf(c_60,plain,
    ( ~ in(X0,X1)
    | in(X0,set_union2(X2,X1)) ),
    inference(cnf_transformation,[],[f193]) ).

cnf(c_61,plain,
    ( ~ in(X0,X1)
    | in(X0,set_union2(X1,X2)) ),
    inference(cnf_transformation,[],[f194]) ).

cnf(c_62,plain,
    ( ~ in(X0,set_union2(X1,X2))
    | in(X0,X1)
    | in(X0,X2) ),
    inference(cnf_transformation,[],[f195]) ).

cnf(c_75,plain,
    ( ~ in(X0,X1)
    | in(X0,set_difference(X1,X2))
    | in(X0,X2) ),
    inference(cnf_transformation,[],[f199]) ).

cnf(c_77,plain,
    ( ~ in(X0,set_difference(X1,X2))
    | in(X0,X1) ),
    inference(cnf_transformation,[],[f201]) ).

cnf(c_106,negated_conjecture,
    set_union2(sK8,set_difference(sK9,sK8)) != set_union2(sK8,sK9),
    inference(cnf_transformation,[],[f176]) ).

cnf(c_3199,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,sK9))
    | ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_difference(sK9,sK8))
    | set_union2(sK8,set_difference(sK9,sK8)) = set_union2(sK8,sK9) ),
    inference(instantiation,[status(thm)],[c_57]) ).

cnf(c_3216,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,sK9))
    | ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK8)
    | set_union2(sK8,set_difference(sK9,sK8)) = set_union2(sK8,sK9) ),
    inference(instantiation,[status(thm)],[c_58]) ).

cnf(c_3217,plain,
    ( set_union2(sK8,set_difference(sK9,sK8)) = set_union2(sK8,sK9)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,sK9))
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_difference(sK9,sK8))
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK8) ),
    inference(instantiation,[status(thm)],[c_59]) ).

cnf(c_3701,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,sK9))
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK8)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK9) ),
    inference(instantiation,[status(thm)],[c_62]) ).

cnf(c_4574,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_difference(sK9,sK8))
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK9) ),
    inference(instantiation,[status(thm)],[c_77]) ).

cnf(c_7755,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK8)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,X0)) ),
    inference(instantiation,[status(thm)],[c_61]) ).

cnf(c_16329,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK9)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_difference(sK9,X0))
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),X0) ),
    inference(instantiation,[status(thm)],[c_75]) ).

cnf(c_16331,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK9)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(X0,sK9)) ),
    inference(instantiation,[status(thm)],[c_60]) ).

cnf(c_24389,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK8)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,sK9)) ),
    inference(instantiation,[status(thm)],[c_7755]) ).

cnf(c_31916,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK9)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_union2(sK8,sK9)) ),
    inference(instantiation,[status(thm)],[c_16331]) ).

cnf(c_45567,plain,
    ( ~ in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK9)
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),set_difference(sK9,sK8))
    | in(sK1(sK8,set_difference(sK9,sK8),set_union2(sK8,sK9)),sK8) ),
    inference(instantiation,[status(thm)],[c_16329]) ).

cnf(c_45568,plain,
    $false,
    inference(prop_impl_just,[status(thm)],[c_45567,c_31916,c_24389,c_4574,c_3701,c_3217,c_3216,c_3199,c_106]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13  % Problem  : SEU135+2 : TPTP v8.1.2. Released v3.3.0.
% 0.00/0.14  % Command  : run_iprover %s %d THM
% 0.15/0.35  % Computer : n025.cluster.edu
% 0.15/0.35  % Model    : x86_64 x86_64
% 0.15/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.35  % Memory   : 8042.1875MB
% 0.15/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.35  % CPULimit : 300
% 0.15/0.35  % WCLimit  : 300
% 0.15/0.35  % DateTime : Wed Aug 23 19:58:21 EDT 2023
% 0.15/0.35  % CPUTime  : 
% 0.21/0.46  Running first-order theorem proving
% 0.21/0.46  Running: /export/starexec/sandbox2/solver/bin/run_problem --schedule fof_schedule --no_cores 8 /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 7.59/1.65  % SZS status Started for theBenchmark.p
% 7.59/1.65  % SZS status Theorem for theBenchmark.p
% 7.59/1.65  
% 7.59/1.65  %---------------- iProver v3.8 (pre SMT-COMP 2023/CASC 2023) ----------------%
% 7.59/1.65  
% 7.59/1.65  ------  iProver source info
% 7.59/1.65  
% 7.59/1.65  git: date: 2023-05-31 18:12:56 +0000
% 7.59/1.65  git: sha1: 8abddc1f627fd3ce0bcb8b4cbf113b3cc443d7b6
% 7.59/1.65  git: non_committed_changes: false
% 7.59/1.65  git: last_make_outside_of_git: false
% 7.59/1.65  
% 7.59/1.65  ------ Parsing...
% 7.59/1.65  ------ Clausification by vclausify_rel  & Parsing by iProver...
% 7.59/1.65  
% 7.59/1.65  ------ Preprocessing... sup_sim: 0  sf_s  rm: 1 0s  sf_e  pe_s  pe_e  sup_sim: 0  sf_s  rm: 1 0s  sf_e  pe_s  pe_e 
% 7.59/1.65  
% 7.59/1.65  ------ Preprocessing... gs_s  sp: 0 0s  gs_e  snvd_s sp: 0 0s snvd_e 
% 7.59/1.65  
% 7.59/1.65  ------ Preprocessing... sf_s  rm: 1 0s  sf_e  sf_s  rm: 0 0s  sf_e 
% 7.59/1.65  ------ Proving...
% 7.59/1.65  ------ Problem Properties 
% 7.59/1.65  
% 7.59/1.65  
% 7.59/1.65  clauses                                 67
% 7.59/1.65  conjectures                             1
% 7.59/1.65  EPR                                     16
% 7.59/1.65  Horn                                    53
% 7.59/1.65  unary                                   18
% 7.59/1.65  binary                                  28
% 7.59/1.65  lits                                    140
% 7.59/1.65  lits eq                                 31
% 7.59/1.65  fd_pure                                 0
% 7.59/1.65  fd_pseudo                               0
% 7.59/1.65  fd_cond                                 3
% 7.59/1.65  fd_pseudo_cond                          13
% 7.59/1.65  AC symbols                              0
% 7.59/1.65  
% 7.59/1.65  ------ Schedule dynamic 5 is on 
% 7.59/1.65  
% 7.59/1.65  ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 7.59/1.65  
% 7.59/1.65  
% 7.59/1.65  ------ 
% 7.59/1.65  Current options:
% 7.59/1.65  ------ 
% 7.59/1.65  
% 7.59/1.65  
% 7.59/1.65  
% 7.59/1.65  
% 7.59/1.65  ------ Proving...
% 7.59/1.65  
% 7.59/1.65  
% 7.59/1.65  % SZS status Theorem for theBenchmark.p
% 7.59/1.65  
% 7.59/1.65  % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 7.59/1.65  
% 7.59/1.65  
%------------------------------------------------------------------------------