%------------------------------------------------------------------------------
% File : Lash---1.13
% Problem : SEU723^2 : TPTP v9.2.0. Released v3.7.0.
% Transfm : none
% Format : tptp:raw
% Command : lash -P picomus -M modes -p tstp -t %d %s
% Computer : n014.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 Oct 9 02:34:52 PM UTC 2025
% Result : Theorem 0.20s 0.53s
% Output : Proof 0.20s
% Verified :
% SZS Type : ERROR: Analysing output (MakeTreeStats fails)
% Comments :
%------------------------------------------------------------------------------
thf(ty_powerset,type,
powerset: $i > $i ).
thf(ty_eigen__0,type,
eigen__0: $i ).
thf(ty_eigen__3,type,
eigen__3: $i ).
thf(ty_setminus,type,
setminus: $i > $i > $i ).
thf(ty_eigen__2,type,
eigen__2: $i ).
thf(ty_subset,type,
subset: $i > $i > $o ).
thf(ty_in,type,
in: $i > $i > $o ).
thf(ty_eigen__1,type,
eigen__1: $i ).
thf(sP1,plain,
( sP1
<=> ( in @ eigen__3 @ eigen__2 ) ),
introduced(definition,[new_symbols(definition,[sP1])]) ).
thf(sP2,plain,
( sP2
<=> ( ( in @ eigen__3 @ ( setminus @ eigen__0 @ eigen__2 ) )
=> ~ sP1 ) ),
introduced(definition,[new_symbols(definition,[sP2])]) ).
thf(sP3,plain,
( sP3
<=> ! [X1: $i] :
( ( in @ X1 @ ( setminus @ eigen__0 @ eigen__2 ) )
=> ~ ( in @ X1 @ eigen__2 ) ) ),
introduced(definition,[new_symbols(definition,[sP3])]) ).
thf(sP4,plain,
( sP4
<=> ! [X1: $i,X2: $i,X3: $i] :
( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
=> ~ ( in @ X3 @ X2 ) ) ),
introduced(definition,[new_symbols(definition,[sP4])]) ).
thf(sP5,plain,
( sP5
<=> ( ( in @ eigen__3 @ eigen__1 )
=> ( in @ eigen__3 @ ( setminus @ eigen__0 @ eigen__2 ) ) ) ),
introduced(definition,[new_symbols(definition,[sP5])]) ).
thf(sP6,plain,
( sP6
<=> ! [X1: $i,X2: $i] :
( ( subset @ eigen__1 @ X1 )
=> ( ( in @ X2 @ eigen__1 )
=> ( in @ X2 @ X1 ) ) ) ),
introduced(definition,[new_symbols(definition,[sP6])]) ).
thf(sP7,plain,
( sP7
<=> ! [X1: $i] :
( ( subset @ eigen__1 @ ( setminus @ eigen__0 @ eigen__2 ) )
=> ( ( in @ X1 @ eigen__1 )
=> ( in @ X1 @ ( setminus @ eigen__0 @ eigen__2 ) ) ) ) ),
introduced(definition,[new_symbols(definition,[sP7])]) ).
thf(sP8,plain,
( sP8
<=> ( ( subset @ eigen__1 @ ( setminus @ eigen__0 @ eigen__2 ) )
=> sP5 ) ),
introduced(definition,[new_symbols(definition,[sP8])]) ).
thf(sP9,plain,
( sP9
<=> ( subset @ eigen__1 @ ( setminus @ eigen__0 @ eigen__2 ) ) ),
introduced(definition,[new_symbols(definition,[sP9])]) ).
thf(sP10,plain,
( sP10
<=> ( in @ eigen__3 @ eigen__1 ) ),
introduced(definition,[new_symbols(definition,[sP10])]) ).
thf(sP11,plain,
( sP11
<=> ( in @ eigen__3 @ ( setminus @ eigen__0 @ eigen__2 ) ) ),
introduced(definition,[new_symbols(definition,[sP11])]) ).
thf(sP12,plain,
( sP12
<=> ! [X1: $i,X2: $i,X3: $i] :
( ( subset @ X1 @ X2 )
=> ( ( in @ X3 @ X1 )
=> ( in @ X3 @ X2 ) ) ) ),
introduced(definition,[new_symbols(definition,[sP12])]) ).
thf(sP13,plain,
( sP13
<=> ! [X1: $i,X2: $i] :
( ( in @ X2 @ ( setminus @ eigen__0 @ X1 ) )
=> ~ ( in @ X2 @ X1 ) ) ),
introduced(definition,[new_symbols(definition,[sP13])]) ).
thf(def_subsetE,definition,
( subsetE
= ( ! [X1: $i,X2: $i,X3: $i] :
( ^ [X4: $o,X5: $o] :
( X4
=> X5 )
@ ( subset @ X1 @ X2 )
@ ( ^ [X4: $o,X5: $o] :
( X4
=> X5 )
@ ( in @ X3 @ X1 )
@ ( in @ X3 @ X2 ) ) ) ) ) ).
thf(def_setminusER,definition,
( setminusER
= ( ! [X1: $i,X2: $i,X3: $i] :
( ^ [X4: $o,X5: $o] :
( X4
=> X5 )
@ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
@ ( (~) @ ( in @ X3 @ X2 ) ) ) ) ) ).
thf(contrasubsetT,conjecture,
( sP12
=> ( sP4
=> ! [X1: $i,X2: $i] :
( ( in @ X2 @ ( powerset @ X1 ) )
=> ! [X3: $i] :
( ( in @ X3 @ ( powerset @ X1 ) )
=> ! [X4: $i] :
( ( in @ X4 @ X1 )
=> ( ( subset @ X2 @ ( setminus @ X1 @ X3 ) )
=> ( ( in @ X4 @ X3 )
=> ~ ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ).
thf(h0,negated_conjecture,
~ ( sP12
=> ( sP4
=> ! [X1: $i,X2: $i] :
( ( in @ X2 @ ( powerset @ X1 ) )
=> ! [X3: $i] :
( ( in @ X3 @ ( powerset @ X1 ) )
=> ! [X4: $i] :
( ( in @ X4 @ X1 )
=> ( ( subset @ X2 @ ( setminus @ X1 @ X3 ) )
=> ( ( in @ X4 @ X3 )
=> ~ ( in @ X4 @ X2 ) ) ) ) ) ) ) ),
inference(assume_negation,[status(cth)],[contrasubsetT]) ).
thf(h1,assumption,
sP12,
introduced(assumption,[]) ).
thf(h2,assumption,
~ ( sP4
=> ! [X1: $i,X2: $i] :
( ( in @ X2 @ ( powerset @ X1 ) )
=> ! [X3: $i] :
( ( in @ X3 @ ( powerset @ X1 ) )
=> ! [X4: $i] :
( ( in @ X4 @ X1 )
=> ( ( subset @ X2 @ ( setminus @ X1 @ X3 ) )
=> ( ( in @ X4 @ X3 )
=> ~ ( in @ X4 @ X2 ) ) ) ) ) ) ),
introduced(assumption,[]) ).
thf(h3,assumption,
sP4,
introduced(assumption,[]) ).
thf(h4,assumption,
~ ! [X1: $i,X2: $i] :
( ( in @ X2 @ ( powerset @ X1 ) )
=> ! [X3: $i] :
( ( in @ X3 @ ( powerset @ X1 ) )
=> ! [X4: $i] :
( ( in @ X4 @ X1 )
=> ( ( subset @ X2 @ ( setminus @ X1 @ X3 ) )
=> ( ( in @ X4 @ X3 )
=> ~ ( in @ X4 @ X2 ) ) ) ) ) ),
introduced(assumption,[]) ).
thf(h5,assumption,
~ ! [X1: $i] :
( ( in @ X1 @ ( powerset @ eigen__0 ) )
=> ! [X2: $i] :
( ( in @ X2 @ ( powerset @ eigen__0 ) )
=> ! [X3: $i] :
( ( in @ X3 @ eigen__0 )
=> ( ( subset @ X1 @ ( setminus @ eigen__0 @ X2 ) )
=> ( ( in @ X3 @ X2 )
=> ~ ( in @ X3 @ X1 ) ) ) ) ) ),
introduced(assumption,[]) ).
thf(h6,assumption,
~ ( ( in @ eigen__1 @ ( powerset @ eigen__0 ) )
=> ! [X1: $i] :
( ( in @ X1 @ ( powerset @ eigen__0 ) )
=> ! [X2: $i] :
( ( in @ X2 @ eigen__0 )
=> ( ( subset @ eigen__1 @ ( setminus @ eigen__0 @ X1 ) )
=> ( ( in @ X2 @ X1 )
=> ~ ( in @ X2 @ eigen__1 ) ) ) ) ) ),
introduced(assumption,[]) ).
thf(h7,assumption,
in @ eigen__1 @ ( powerset @ eigen__0 ),
introduced(assumption,[]) ).
thf(h8,assumption,
~ ! [X1: $i] :
( ( in @ X1 @ ( powerset @ eigen__0 ) )
=> ! [X2: $i] :
( ( in @ X2 @ eigen__0 )
=> ( ( subset @ eigen__1 @ ( setminus @ eigen__0 @ X1 ) )
=> ( ( in @ X2 @ X1 )
=> ~ ( in @ X2 @ eigen__1 ) ) ) ) ),
introduced(assumption,[]) ).
thf(h9,assumption,
~ ( ( in @ eigen__2 @ ( powerset @ eigen__0 ) )
=> ! [X1: $i] :
( ( in @ X1 @ eigen__0 )
=> ( sP9
=> ( ( in @ X1 @ eigen__2 )
=> ~ ( in @ X1 @ eigen__1 ) ) ) ) ),
introduced(assumption,[]) ).
thf(h10,assumption,
in @ eigen__2 @ ( powerset @ eigen__0 ),
introduced(assumption,[]) ).
thf(h11,assumption,
~ ! [X1: $i] :
( ( in @ X1 @ eigen__0 )
=> ( sP9
=> ( ( in @ X1 @ eigen__2 )
=> ~ ( in @ X1 @ eigen__1 ) ) ) ),
introduced(assumption,[]) ).
thf(h12,assumption,
~ ( ( in @ eigen__3 @ eigen__0 )
=> ( sP9
=> ( sP1
=> ~ sP10 ) ) ),
introduced(assumption,[]) ).
thf(h13,assumption,
in @ eigen__3 @ eigen__0,
introduced(assumption,[]) ).
thf(h14,assumption,
~ ( sP9
=> ( sP1
=> ~ sP10 ) ),
introduced(assumption,[]) ).
thf(h15,assumption,
sP9,
introduced(assumption,[]) ).
thf(h16,assumption,
~ ( sP1
=> ~ sP10 ),
introduced(assumption,[]) ).
thf(h17,assumption,
sP1,
introduced(assumption,[]) ).
thf(h18,assumption,
sP10,
introduced(assumption,[]) ).
thf(1,plain,
( ~ sP5
| ~ sP10
| sP11 ),
inference(prop_rule,[status(thm)],[]) ).
thf(2,plain,
( ~ sP8
| ~ sP9
| sP5 ),
inference(prop_rule,[status(thm)],[]) ).
thf(3,plain,
( ~ sP7
| sP8 ),
inference(all_rule,[status(thm)],[]) ).
thf(4,plain,
( ~ sP6
| sP7 ),
inference(all_rule,[status(thm)],[]) ).
thf(5,plain,
( ~ sP2
| ~ sP11
| ~ sP1 ),
inference(prop_rule,[status(thm)],[]) ).
thf(6,plain,
( ~ sP3
| sP2 ),
inference(all_rule,[status(thm)],[]) ).
thf(7,plain,
( ~ sP13
| sP3 ),
inference(all_rule,[status(thm)],[]) ).
thf(8,plain,
( ~ sP4
| sP13 ),
inference(all_rule,[status(thm)],[]) ).
thf(9,plain,
( ~ sP12
| sP6 ),
inference(all_rule,[status(thm)],[]) ).
thf(10,plain,
$false,
inference(prop_unsat,[status(thm),assumptions([h17,h18,h15,h16,h13,h14,h12,h10,h11,h9,h7,h8,h6,h5,h3,h4,h1,h2,h0])],[1,2,3,4,5,6,7,8,9,h1,h3,h15,h17,h18]) ).
thf(11,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h15,h16,h13,h14,h12,h10,h11,h9,h7,h8,h6,h5,h3,h4,h1,h2,h0]),tab_negimp(discharge,[h17,h18])],[h16,10,h17,h18]) ).
thf(12,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h13,h14,h12,h10,h11,h9,h7,h8,h6,h5,h3,h4,h1,h2,h0]),tab_negimp(discharge,[h15,h16])],[h14,11,h15,h16]) ).
thf(13,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h12,h10,h11,h9,h7,h8,h6,h5,h3,h4,h1,h2,h0]),tab_negimp(discharge,[h13,h14])],[h12,12,h13,h14]) ).
thf(14,plain,
$false,
inference(tab_negall,[status(thm),assumptions([h10,h11,h9,h7,h8,h6,h5,h3,h4,h1,h2,h0]),tab_negall(discharge,[h12]),tab_negall(eigenvar,eigen__3)],[h11,13,h12]) ).
thf(15,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h9,h7,h8,h6,h5,h3,h4,h1,h2,h0]),tab_negimp(discharge,[h10,h11])],[h9,14,h10,h11]) ).
thf(16,plain,
$false,
inference(tab_negall,[status(thm),assumptions([h7,h8,h6,h5,h3,h4,h1,h2,h0]),tab_negall(discharge,[h9]),tab_negall(eigenvar,eigen__2)],[h8,15,h9]) ).
thf(17,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h6,h5,h3,h4,h1,h2,h0]),tab_negimp(discharge,[h7,h8])],[h6,16,h7,h8]) ).
thf(18,plain,
$false,
inference(tab_negall,[status(thm),assumptions([h5,h3,h4,h1,h2,h0]),tab_negall(discharge,[h6]),tab_negall(eigenvar,eigen__1)],[h5,17,h6]) ).
thf(19,plain,
$false,
inference(tab_negall,[status(thm),assumptions([h3,h4,h1,h2,h0]),tab_negall(discharge,[h5]),tab_negall(eigenvar,eigen__0)],[h4,18,h5]) ).
thf(20,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h1,h2,h0]),tab_negimp(discharge,[h3,h4])],[h2,19,h3,h4]) ).
thf(21,plain,
$false,
inference(tab_negimp,[status(thm),assumptions([h0]),tab_negimp(discharge,[h1,h2])],[h0,20,h1,h2]) ).
thf(0,theorem,
( sP12
=> ( sP4
=> ! [X1: $i,X2: $i] :
( ( in @ X2 @ ( powerset @ X1 ) )
=> ! [X3: $i] :
( ( in @ X3 @ ( powerset @ X1 ) )
=> ! [X4: $i] :
( ( in @ X4 @ X1 )
=> ( ( subset @ X2 @ ( setminus @ X1 @ X3 ) )
=> ( ( in @ X4 @ X3 )
=> ~ ( in @ X4 @ X2 ) ) ) ) ) ) ) ),
inference(contra,[status(thm),contra(discharge,[h0])],[21,h0]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12 % Problem : SEU723^2 : TPTP v9.2.0. Released v3.7.0.
% 0.03/0.13 % Command : lash -P picomus -M modes -p tstp -t %d %s
% 0.13/0.34 % Computer : n014.cluster.edu
% 0.13/0.34 % Model : x86_64 x86_64
% 0.13/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34 % Memory : 8042.1875MB
% 0.13/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34 % CPULimit : 300
% 0.13/0.34 % WCLimit : 300
% 0.13/0.34 % DateTime : Wed Oct 8 21:05:38 EDT 2025
% 0.13/0.35 % CPUTime :
% 0.20/0.53 % SZS status Theorem
% 0.20/0.53 % Mode: cade22grackle2xfee4
% 0.20/0.53 % Steps: 1545
% 0.20/0.53 % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------