%------------------------------------------------------------------------------
% File     : Gandalf---c-2.6
% Problem  : SET025-4 : TPTP v3.4.2. Released v1.0.0.
% Transfm  : add_equality:r
% Format   : otter:hypothesis:set(auto),clear(print_given)
% Command  : gandalf-wrapper -time %d %s

% Computer : art02.cs.miami.edu
% Model    : i686 unknown
% CPU      : Intel(R) Pentium(R) 4 CPU 2.80GHz @ 2793MHz
% Memory   : 1000MB
% OS       : Linux 2.4.22-21mdk-i686-up-4GB
% CPULimit : 600s

% Result   : Unsatisfiable 0.0s
% Output   : Assurance 0.0s
% Verified : 
% SZS Type : None (Parsing solution fails)
% Syntax   : Number of formulae    : 0

% Comments : 
%------------------------------------------------------------------------------
%----NO SOLUTION OUTPUT BY SYSTEM
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 
% Gandalf c-2.6 r1 starting to prove: /home/graph/tptp/TSTP/PreparedTPTP/otter:hypothesis:set(auto),clear(print_given)---add_equality:r/SET/SET025-4+eq_r.in
% Using automatic strategy selection.
% Time limit in seconds: 600
% 
% prove-all-passes started
% 
% detected problem class: neq
% detected subclass: big
% 
% strategies selected: 
% (hyper 28 #f 4 15)
% (binary-unit 28 #f 4 15)
% (binary-double 11 #f 4 15)
% (binary-double 17 #f)
% (binary-double 17 #t)
% (binary 87 #t 4 15)
% (binary-order 28 #f 4 15)
% (binary-posweight-order 58 #f)
% (binary-posweight-lex-big-order 28 #f)
% (binary-posweight-lex-small-order 11 #f)
% (binary-order-sos 28 #t)
% (binary-unit-uniteq 28 #f)
% (binary-weightorder 28 #f)
% (binary-weightorder-sos 17 #f)
% (binary-order 28 #f)
% (hyper-order 17 #f)
% (binary 141 #t)
% 
% 
% **** EMPTY CLAUSE DERIVED ****
% 
% 
% timer checkpoints: c(143,40,1,286,0,1)
% 
% 
% START OF PROOF
% 152 [] little_set(non_ordered_pair(X,Y)).
% 154 [] equal(ordered_pair(X,Y),non_ordered_pair(singleton_set(X),non_ordered_pair(X,Y))).
% 286 [] -little_set(ordered_pair(a,b)).
% 8939 [para:154.1.2,152.1.1,slowcut:286] contradiction
% END OF PROOF
% 
% Proof found by the following strategy:
% 
% using hyperresolution
% not using sos strategy
% using positive unit paramodulation strategy
% using dynamic demodulation
% using ordered paramodulation
% using kb ordering for equality
% preferring bigger arities for lex ordering
% clause length limited to 15
% clause depth limited to 4
% seconds given: 28
% 
% 
% ***GANDALF_FOUND_A_REFUTATION***
% 
% Global statistics over all passes: 
% 
%  given clauses:    54
%  derived clauses:   13999
%  kept clauses:      5033
%  kept size sum:     129057
%  kept mid-nuclei:   3322
%  kept new demods:   9
%  forw unit-subs:    249
%  forw double-subs: 131
%  forw overdouble-subs: 1168
%  backward subs:     0
%  fast unit cutoff:  102
%  full unit cutoff:  0
%  dbl  unit cutoff:  0
%  real runtime  :  0.50
%  process. runtime:  0.48
% specific non-discr-tree subsumption statistics: 
%  tried:           21841
%  length fails:    3092
%  strength fails:  3396
%  predlist fails:  3015
%  aux str. fails:  885
%  by-lit fails:    2435
%  full subs tried: 6964
%  full subs fail:  5776
% 
% ; program args: ("/home/graph/tptp/Systems/Gandalf---c-2.6/gandalf" "-time" "600" "/home/graph/tptp/TSTP/PreparedTPTP/otter:hypothesis:set(auto),clear(print_given)---add_equality:r/SET/SET025-4+eq_r.in")
% 
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