TSTP Solution File: SYN343-1 by Otter---3.3
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%------------------------------------------------------------------------------
% File : Otter---3.3
% Problem : SYN343-1 : TPTP v8.1.0. Released v1.2.0.
% Transfm : none
% Format : tptp:raw
% Command : otter-tptp-script %s
% Computer : n027.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 : Wed Jul 27 13:24:18 EDT 2022
% Result : Unsatisfiable 1.68s 1.87s
% Output : Refutation 1.68s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 2
% Syntax : Number of clauses : 5 ( 3 unt; 1 nHn; 3 RR)
% Number of literals : 7 ( 0 equ; 3 neg)
% Maximal clause size : 2 ( 1 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 1 ( 1 usr; 1 con; 0-0 aty)
% Number of variables : 4 ( 4 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(2,axiom,
( ~ f(a,a)
| ~ f(A,B) ),
file('SYN343-1.p',unknown),
[] ).
cnf(3,plain,
~ f(a,a),
inference(factor_simp,[status(thm)],[inference(copy,[status(thm)],[2])]),
[iquote('copy,2,factor_simp')] ).
cnf(4,axiom,
( f(a,A)
| f(a,a) ),
file('SYN343-1.p',unknown),
[] ).
cnf(5,plain,
f(a,A),
inference(unit_del,[status(thm)],[inference(copy,[status(thm)],[4]),3]),
[iquote('copy,4,unit_del,3')] ).
cnf(6,plain,
$false,
inference(binary,[status(thm)],[5,3]),
[iquote('binary,5.1,3.1')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.11 % Problem : SYN343-1 : TPTP v8.1.0. Released v1.2.0.
% 0.07/0.12 % Command : otter-tptp-script %s
% 0.11/0.33 % Computer : n027.cluster.edu
% 0.11/0.33 % Model : x86_64 x86_64
% 0.11/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.33 % Memory : 8042.1875MB
% 0.11/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.11/0.33 % CPULimit : 300
% 0.11/0.33 % WCLimit : 300
% 0.11/0.33 % DateTime : Wed Jul 27 11:31:37 EDT 2022
% 0.11/0.33 % CPUTime :
% 1.68/1.87
% 1.68/1.87 -------- PROOF --------
% 1.68/1.87 ----- Otter 3.3f, August 2004 -----
% 1.68/1.87 The process was started by sandbox2 on n027.cluster.edu,
% 1.68/1.87 Wed Jul 27 11:31:37 2022
% 1.68/1.87 The command was "./otter". The process ID is 26068.
% 1.68/1.87
% 1.68/1.87 set(prolog_style_variables).
% 1.68/1.87 set(auto).
% 1.68/1.87 dependent: set(auto1).
% 1.68/1.87 dependent: set(process_input).
% 1.68/1.87 dependent: clear(print_kept).
% 1.68/1.87 dependent: clear(print_new_demod).
% 1.68/1.87 dependent: clear(print_back_demod).
% 1.68/1.87 dependent: clear(print_back_sub).
% 1.68/1.87 dependent: set(control_memory).
% 1.68/1.87 dependent: assign(max_mem, 12000).
% 1.68/1.87 dependent: assign(pick_given_ratio, 4).
% 1.68/1.87 dependent: assign(stats_level, 1).
% 1.68/1.87 dependent: assign(max_seconds, 10800).
% 1.68/1.87 clear(print_given).
% 1.68/1.87
% 1.68/1.87 list(usable).
% 1.68/1.87 0 [] f(a,Y1)|f(a,a).
% 1.68/1.87 0 [] -f(z(Y1,Y2),a)|f(a,a).
% 1.68/1.87 0 [] -f(a,a)| -f(Y1,Y2).
% 1.68/1.87 end_of_list.
% 1.68/1.87
% 1.68/1.87 SCAN INPUT: prop=0, horn=0, equality=0, symmetry=0, max_lits=2.
% 1.68/1.87
% 1.68/1.87 This is a non-Horn set without equality. The strategy will
% 1.68/1.87 be ordered hyper_res, unit deletion, and factoring, with
% 1.68/1.87 satellites in sos and with nuclei in usable.
% 1.68/1.87
% 1.68/1.87 dependent: set(hyper_res).
% 1.68/1.87 dependent: set(factor).
% 1.68/1.87 dependent: set(unit_deletion).
% 1.68/1.87
% 1.68/1.87 ------------> process usable:
% 1.68/1.87 ** KEPT (pick-wt=8): 1 [] -f(z(A,B),a)|f(a,a).
% 1.68/1.87 ** KEPT (pick-wt=3): 3 [copy,2,factor_simp] -f(a,a).
% 1.68/1.87
% 1.68/1.87 ------------> process sos:
% 1.68/1.87 ** KEPT (pick-wt=3): 5 [copy,4,unit_del,3] f(a,A).
% 1.68/1.87
% 1.68/1.87 ----> UNIT CONFLICT at 0.00 sec ----> 6 [binary,5.1,3.1] $F.
% 1.68/1.87
% 1.68/1.87 Length of proof is 2. Level of proof is 2.
% 1.68/1.87
% 1.68/1.87 ---------------- PROOF ----------------
% 1.68/1.87 % SZS status Unsatisfiable
% 1.68/1.87 % SZS output start Refutation
% See solution above
% 1.68/1.87 ------------ end of proof -------------
% 1.68/1.87
% 1.68/1.87
% 1.68/1.87 Search stopped by max_proofs option.
% 1.68/1.87
% 1.68/1.87
% 1.68/1.87 Search stopped by max_proofs option.
% 1.68/1.87
% 1.68/1.87 ============ end of search ============
% 1.68/1.87
% 1.68/1.87 -------------- statistics -------------
% 1.68/1.87 clauses given 0
% 1.68/1.87 clauses generated 0
% 1.68/1.87 clauses kept 3
% 1.68/1.87 clauses forward subsumed 0
% 1.68/1.87 clauses back subsumed 0
% 1.68/1.87 Kbytes malloced 976
% 1.68/1.87
% 1.68/1.87 ----------- times (seconds) -----------
% 1.68/1.87 user CPU time 0.00 (0 hr, 0 min, 0 sec)
% 1.68/1.87 system CPU time 0.00 (0 hr, 0 min, 0 sec)
% 1.68/1.87 wall-clock time 1 (0 hr, 0 min, 1 sec)
% 1.68/1.87
% 1.68/1.87 That finishes the proof of the theorem.
% 1.68/1.87
% 1.68/1.87 Process 26068 finished Wed Jul 27 11:31:38 2022
% 1.68/1.87 Otter interrupted
% 1.68/1.87 PROOF FOUND
%------------------------------------------------------------------------------