TSTP Solution File: PUZ016-1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : PUZ016-1 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n005.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 : Sun Sep 18 14:10:51 EDT 2022

% Result   : Unsatisfiable 0.62s 0.69s
% Output   : Proof 0.62s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   17
%            Number of leaves      :   45
% Syntax   : Number of formulae    :   97 (  27 unt;  10 typ;   0 def)
%            Number of atoms       :  255 (  11 equ)
%            Maximal formula atoms :    8 (   2 avg)
%            Number of connectives :  319 ( 155   ~; 129   |;   0   &)
%                                         (  35 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   15 (   7 avg)
%            Maximal term depth    :    9 (   2 avg)
%            Number of FOOLs       :    4 (   4 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   13 (   5   >;   8   *;   0   +;   0  <<)
%            Number of predicates  :    5 (   3 usr;   1 prp; 0-2 aty)
%            Number of functors    :    9 (   9 usr;   5 con; 0-8 aty)
%            Number of variables   :  480 ( 450   !;   0   ?; 480   :)

% Comments : 
%------------------------------------------------------------------------------
tff(achievable_type,type,
    achievable: ( $i * $i ) > $o ).

tff(squares_type,type,
    squares: ( $i * $i * $i * $i * $i * $i * $i * $i ) > $i ).

tff(complement_type,type,
    complement: $i > $i ).

tff(removed_type,type,
    removed: $i ).

tff(row_type,type,
    row: $i > $i ).

tff(successor_type,type,
    successor: $i > $i ).

tff(n1_type,type,
    n1: $i ).

tff(not_covered_type,type,
    not_covered: $i ).

tff(covered_type,type,
    covered: $i ).

tff(n8_type,type,
    n8: $i ).

tff(1,plain,
    ( ( complement(complement(not_covered)) = not_covered )
  <=> ( complement(complement(complement(removed))) = complement(removed) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(2,plain,
    ( ( complement(covered) = not_covered )
  <=> ( complement(complement(not_covered)) = not_covered ) ),
    inference(rewrite,[status(thm)],]) ).

tff(3,plain,
    ( ( complement(covered) = not_covered )
  <=> ( complement(covered) = not_covered ) ),
    inference(rewrite,[status(thm)],]) ).

tff(4,axiom,
    complement(covered) = not_covered,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',complement_of_covered_is_not_covered) ).

tff(5,plain,
    complement(covered) = not_covered,
    inference(modus_ponens,[status(thm)],[4,3]) ).

tff(6,plain,
    complement(complement(not_covered)) = not_covered,
    inference(modus_ponens,[status(thm)],[5,2]) ).

tff(7,plain,
    complement(complement(complement(removed))) = complement(removed),
    inference(modus_ponens,[status(thm)],[6,1]) ).

tff(8,plain,
    squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed)))) = squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)),
    inference(monotonicity,[status(thm)],[7,7,7,7,7,7,7,7]) ).

tff(9,plain,
    ( achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed)))))
  <=> achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))) ),
    inference(monotonicity,[status(thm)],[8]) ).

tff(10,plain,
    ( achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
  <=> achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(symmetry,[status(thm)],[9]) ).

tff(11,plain,
    ( ~ achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
  <=> ~ achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(monotonicity,[status(thm)],[10]) ).

tff(12,plain,
    ( achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed)))))
  <=> achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))) ),
    inference(monotonicity,[status(thm)],[8]) ).

tff(13,plain,
    ( achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
  <=> achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(symmetry,[status(thm)],[12]) ).

tff(14,plain,
    ( ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
  <=> ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(monotonicity,[status(thm)],[13]) ).

tff(15,plain,
    ( achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed)))))
  <=> achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))) ),
    inference(monotonicity,[status(thm)],[8]) ).

tff(16,plain,
    ( achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
  <=> achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(symmetry,[status(thm)],[15]) ).

tff(17,plain,
    ( ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
  <=> ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(monotonicity,[status(thm)],[16]) ).

tff(18,plain,
    ( ~ achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered)))
  <=> ~ achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(rewrite,[status(thm)],]) ).

tff(19,plain,
    ( ~ achievable(row(n8),squares(covered,covered,covered,covered,covered,covered,covered,covered))
  <=> ~ achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered))) ),
    inference(rewrite,[status(thm)],]) ).

tff(20,plain,
    ( ~ achievable(row(n8),squares(covered,covered,covered,covered,covered,covered,covered,covered))
  <=> ~ achievable(row(n8),squares(covered,covered,covered,covered,covered,covered,covered,covered)) ),
    inference(rewrite,[status(thm)],]) ).

tff(21,axiom,
    ~ achievable(row(n8),squares(covered,covered,covered,covered,covered,covered,covered,covered)),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_row_8_can_be_covered) ).

tff(22,plain,
    ~ achievable(row(n8),squares(covered,covered,covered,covered,covered,covered,covered,covered)),
    inference(modus_ponens,[status(thm)],[21,20]) ).

tff(23,plain,
    ~ achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered),complement(not_covered))),
    inference(modus_ponens,[status(thm)],[22,19]) ).

tff(24,plain,
    ~ achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))),
    inference(modus_ponens,[status(thm)],[23,18]) ).

tff(25,plain,
    ^ [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
      refl(
        ( ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      <=> ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ) )),
    inference(bind,[status(th)],]) ).

tff(26,plain,
    ( ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
  <=> ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ) ),
    inference(quant_intro,[status(thm)],[25]) ).

tff(27,plain,
    ( ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
  <=> ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(28,axiom,
    ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',place_vertical_pieces) ).

tff(29,plain,
    ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ),
    inference(modus_ponens,[status(thm)],[28,27]) ).

tff(30,plain,
    ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ),
    inference(skolemize,[status(sab)],[29]) ).

tff(31,plain,
    ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) ),
    inference(modus_ponens,[status(thm)],[30,26]) ).

tff(32,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(33,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(34,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(successor(successor(successor(successor(successor(successor(n1)))))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(modus_ponens,[status(thm)],[33,32]) ).

tff(35,plain,
    ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))),
    inference(unit_resolution,[status(thm)],[34,31,24]) ).

tff(36,plain,
    ~ achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))),
    inference(modus_ponens,[status(thm)],[35,17]) ).

tff(37,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(38,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(39,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(modus_ponens,[status(thm)],[38,37]) ).

tff(40,plain,
    ( ~ achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(successor(successor(successor(successor(n1))))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(unit_resolution,[status(thm)],[39,31]) ).

tff(41,plain,
    ~ achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))),
    inference(unit_resolution,[status(thm)],[40,36]) ).

tff(42,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(43,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(44,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(successor(successor(successor(successor(n1)))))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(modus_ponens,[status(thm)],[43,42]) ).

tff(45,plain,
    ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))),
    inference(unit_resolution,[status(thm)],[44,31,41]) ).

tff(46,plain,
    ~ achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))),
    inference(modus_ponens,[status(thm)],[45,14]) ).

tff(47,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(48,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(49,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(modus_ponens,[status(thm)],[48,47]) ).

tff(50,plain,
    ( ~ achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(successor(successor(n1))))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(unit_resolution,[status(thm)],[49,31]) ).

tff(51,plain,
    ~ achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))),
    inference(unit_resolution,[status(thm)],[50,46]) ).

tff(52,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(53,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(54,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(successor(successor(n1)))),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(modus_ponens,[status(thm)],[53,52]) ).

tff(55,plain,
    ~ achievable(row(successor(successor(n1))),squares(complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))),
    inference(unit_resolution,[status(thm)],[54,31,51]) ).

tff(56,plain,
    ~ achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))),
    inference(modus_ponens,[status(thm)],[55,11]) ).

tff(57,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(58,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(59,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(modus_ponens,[status(thm)],[58,57]) ).

tff(60,plain,
    ( ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(successor(n1))),squares(complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))),complement(complement(complement(removed))))) ),
    inference(unit_resolution,[status(thm)],[59,31]) ).

tff(61,plain,
    ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))),
    inference(unit_resolution,[status(thm)],[60,56]) ).

tff(62,plain,
    ^ [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      refl(
        ( ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) )
      <=> ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ) )),
    inference(bind,[status(th)],]) ).

tff(63,plain,
    ( ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) )
  <=> ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ) ),
    inference(quant_intro,[status(thm)],[62]) ).

tff(64,plain,
    ^ [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      rewrite(
        ( ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(not_covered),complement(not_covered),Y4,Y5,Y6,Y7,Y8)) )
      <=> ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ) )),
    inference(bind,[status(th)],]) ).

tff(65,plain,
    ( ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,complement(not_covered),complement(not_covered),Y4,Y5,Y6,Y7,Y8)) )
  <=> ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ) ),
    inference(quant_intro,[status(thm)],[64]) ).

tff(66,plain,
    ^ [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      rewrite(
        ( ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,covered,covered,Y4,Y5,Y6,Y7,Y8)) )
      <=> ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(not_covered),complement(not_covered),Y4,Y5,Y6,Y7,Y8)) ) )),
    inference(bind,[status(th)],]) ).

tff(67,plain,
    ( ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,covered,covered,Y4,Y5,Y6,Y7,Y8)) )
  <=> ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,complement(not_covered),complement(not_covered),Y4,Y5,Y6,Y7,Y8)) ) ),
    inference(quant_intro,[status(thm)],[66]) ).

tff(68,plain,
    ( ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,covered,covered,Y4,Y5,Y6,Y7,Y8)) )
  <=> ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
        ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
        | achievable(row(X),squares(Y1,covered,covered,Y4,Y5,Y6,Y7,Y8)) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(69,axiom,
    ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(X),squares(Y1,covered,covered,Y4,Y5,Y6,Y7,Y8)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cover_columns_2_and_3) ).

tff(70,plain,
    ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(X),squares(Y1,covered,covered,Y4,Y5,Y6,Y7,Y8)) ),
    inference(modus_ponens,[status(thm)],[69,68]) ).

tff(71,plain,
    ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,not_covered,not_covered,Y4,Y5,Y6,Y7,Y8))
      | achievable(row(X),squares(Y1,complement(not_covered),complement(not_covered),Y4,Y5,Y6,Y7,Y8)) ),
    inference(modus_ponens,[status(thm)],[70,67]) ).

tff(72,plain,
    ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
      | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ),
    inference(modus_ponens,[status(thm)],[71,65]) ).

tff(73,plain,
    ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
      | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ),
    inference(skolemize,[status(sab)],[72]) ).

tff(74,plain,
    ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
      ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
      | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) ),
    inference(modus_ponens,[status(thm)],[73,63]) ).

tff(75,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
            | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) )
      | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
            | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) )
      | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
      | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(76,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) )
    | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(77,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y1: $i,Y5: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,complement(removed),complement(removed),Y4,Y5,Y6,Y7,Y8))
          | achievable(row(X),squares(Y1,complement(complement(removed)),complement(complement(removed)),Y4,Y5,Y6,Y7,Y8)) )
    | ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed))))
    | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(modus_ponens,[status(thm)],[76,75]) ).

tff(78,plain,
    ~ achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))),
    inference(unit_resolution,[status(thm)],[77,74,61]) ).

tff(79,plain,
    ( achievable(row(n1),squares(not_covered,removed,removed,not_covered,not_covered,not_covered,not_covered,not_covered))
  <=> achievable(row(n1),squares(complement(removed),removed,removed,complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))) ),
    inference(rewrite,[status(thm)],]) ).

tff(80,plain,
    ( achievable(row(n1),squares(not_covered,removed,removed,not_covered,not_covered,not_covered,not_covered,not_covered))
  <=> achievable(row(n1),squares(not_covered,removed,removed,not_covered,not_covered,not_covered,not_covered,not_covered)) ),
    inference(rewrite,[status(thm)],]) ).

tff(81,axiom,
    achievable(row(n1),squares(not_covered,removed,removed,not_covered,not_covered,not_covered,not_covered,not_covered)),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',first_row_initially) ).

tff(82,plain,
    achievable(row(n1),squares(not_covered,removed,removed,not_covered,not_covered,not_covered,not_covered,not_covered)),
    inference(modus_ponens,[status(thm)],[81,80]) ).

tff(83,plain,
    achievable(row(n1),squares(complement(removed),removed,removed,complement(removed),complement(removed),complement(removed),complement(removed),complement(removed))),
    inference(modus_ponens,[status(thm)],[82,79]) ).

tff(84,plain,
    ( ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(n1),squares(complement(removed),removed,removed,complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) )
  <=> ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
            ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
            | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
      | ~ achievable(row(n1),squares(complement(removed),removed,removed,complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
      | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(85,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(n1),squares(complement(removed),removed,removed,complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(quant_inst,[status(thm)],]) ).

tff(86,plain,
    ( ~ ! [Y4: $i,Y8: $i,Y2: $i,Y1: $i,Y5: $i,Y3: $i,Y7: $i,X: $i,Y6: $i] :
          ( ~ achievable(row(X),squares(Y1,Y2,Y3,Y4,Y5,Y6,Y7,Y8))
          | achievable(row(successor(X)),squares(complement(Y1),complement(Y2),complement(Y3),complement(Y4),complement(Y5),complement(Y6),complement(Y7),complement(Y8))) )
    | ~ achievable(row(n1),squares(complement(removed),removed,removed,complement(removed),complement(removed),complement(removed),complement(removed),complement(removed)))
    | achievable(row(successor(n1)),squares(complement(complement(removed)),complement(removed),complement(removed),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)),complement(complement(removed)))) ),
    inference(modus_ponens,[status(thm)],[85,84]) ).

tff(87,plain,
    $false,
    inference(unit_resolution,[status(thm)],[86,31,83,78]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.13/0.13  % Problem  : PUZ016-1 : TPTP v8.1.0. Released v1.0.0.
% 0.13/0.14  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.37  % Computer : n005.cluster.edu
% 0.13/0.37  % Model    : x86_64 x86_64
% 0.13/0.37  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.37  % Memory   : 8042.1875MB
% 0.13/0.37  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.37  % CPULimit : 300
% 0.13/0.37  % WCLimit  : 300
% 0.13/0.37  % DateTime : Fri Sep  2 18:17:18 EDT 2022
% 0.13/0.37  % CPUTime  : 
% 0.13/0.37  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.13/0.37  Usage: tptp [options] [-file:]file
% 0.13/0.37    -h, -?       prints this message.
% 0.13/0.37    -smt2        print SMT-LIB2 benchmark.
% 0.13/0.37    -m, -model   generate model.
% 0.13/0.37    -p, -proof   generate proof.
% 0.13/0.37    -c, -core    generate unsat core of named formulas.
% 0.13/0.37    -st, -statistics display statistics.
% 0.13/0.37    -t:timeout   set timeout (in second).
% 0.13/0.37    -smt2status  display status in smt2 format instead of SZS.
% 0.13/0.37    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.13/0.37    -<param>:<value> configuration parameter and value.
% 0.13/0.37    -o:<output-file> file to place output in.
% 0.62/0.69  % SZS status Unsatisfiable
% 0.62/0.69  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------