TSTP Solution File: COL058-1 by Otter---3.3
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- Process Solution
%------------------------------------------------------------------------------
% File : Otter---3.3
% Problem : COL058-1 : TPTP v8.1.0. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : otter-tptp-script %s
% Computer : n018.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 12:48:06 EDT 2022
% Result : Unsatisfiable 1.73s 1.94s
% Output : Refutation 1.73s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 3
% Syntax : Number of clauses : 8 ( 8 unt; 0 nHn; 5 RR)
% Number of literals : 8 ( 7 equ; 4 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 2 ( 2 usr; 1 con; 0-2 aty)
% Number of variables : 9 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(1,axiom,
response(A,A) != A,
file('COL058-1.p',unknown),
[] ).
cnf(2,axiom,
A = A,
file('COL058-1.p',unknown),
[] ).
cnf(3,axiom,
response(response(lark,A),B) = response(A,response(B,B)),
file('COL058-1.p',unknown),
[] ).
cnf(4,plain,
response(A,response(B,B)) = response(response(lark,A),B),
inference(flip,[status(thm),theory(equality)],[inference(copy,[status(thm)],[3])]),
[iquote('copy,3,flip.1')] ).
cnf(13,plain,
response(response(lark,response(A,A)),A) != response(A,A),
inference(para_from,[status(thm),theory(equality)],[4,1]),
[iquote('para_from,4.1.1,1.1.1')] ).
cnf(17,plain,
response(response(response(lark,lark),A),A) != response(A,A),
inference(para_into,[status(thm),theory(equality)],[13,4]),
[iquote('para_into,13.1.1.1,4.1.1')] ).
cnf(19,plain,
response(response(response(lark,response(lark,lark)),A),response(A,A)) != response(response(A,A),response(A,A)),
inference(para_into,[status(thm),theory(equality)],[17,4]),
[iquote('para_into,17.1.1.1,4.1.1')] ).
cnf(20,plain,
$false,
inference(binary,[status(thm)],[19,2]),
[iquote('binary,19.1,2.1')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12 % Problem : COL058-1 : TPTP v8.1.0. Released v1.0.0.
% 0.03/0.13 % Command : otter-tptp-script %s
% 0.12/0.34 % Computer : n018.cluster.edu
% 0.12/0.34 % Model : x86_64 x86_64
% 0.12/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34 % Memory : 8042.1875MB
% 0.12/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34 % CPULimit : 300
% 0.12/0.34 % WCLimit : 300
% 0.12/0.34 % DateTime : Wed Jul 27 02:28:31 EDT 2022
% 0.12/0.34 % CPUTime :
% 1.73/1.94 ----- Otter 3.3f, August 2004 -----
% 1.73/1.94 The process was started by sandbox2 on n018.cluster.edu,
% 1.73/1.94 Wed Jul 27 02:28:31 2022
% 1.73/1.94 The command was "./otter". The process ID is 16050.
% 1.73/1.94
% 1.73/1.94 set(prolog_style_variables).
% 1.73/1.94 set(auto).
% 1.73/1.94 dependent: set(auto1).
% 1.73/1.94 dependent: set(process_input).
% 1.73/1.94 dependent: clear(print_kept).
% 1.73/1.94 dependent: clear(print_new_demod).
% 1.73/1.94 dependent: clear(print_back_demod).
% 1.73/1.94 dependent: clear(print_back_sub).
% 1.73/1.94 dependent: set(control_memory).
% 1.73/1.94 dependent: assign(max_mem, 12000).
% 1.73/1.94 dependent: assign(pick_given_ratio, 4).
% 1.73/1.94 dependent: assign(stats_level, 1).
% 1.73/1.94 dependent: assign(max_seconds, 10800).
% 1.73/1.94 clear(print_given).
% 1.73/1.94
% 1.73/1.94 list(usable).
% 1.73/1.94 0 [] A=A.
% 1.73/1.94 0 [] response(response(lark,X1),X2)=response(X1,response(X2,X2)).
% 1.73/1.94 0 [] response(X,X)!=X.
% 1.73/1.94 end_of_list.
% 1.73/1.94
% 1.73/1.94 SCAN INPUT: prop=0, horn=1, equality=1, symmetry=0, max_lits=1.
% 1.73/1.94
% 1.73/1.94 All clauses are units, and equality is present; the
% 1.73/1.94 strategy will be Knuth-Bendix with positive clauses in sos.
% 1.73/1.94
% 1.73/1.94 dependent: set(knuth_bendix).
% 1.73/1.94 dependent: set(anl_eq).
% 1.73/1.94 dependent: set(para_from).
% 1.73/1.94 dependent: set(para_into).
% 1.73/1.94 dependent: clear(para_from_right).
% 1.73/1.94 dependent: clear(para_into_right).
% 1.73/1.94 dependent: set(para_from_vars).
% 1.73/1.94 dependent: set(eq_units_both_ways).
% 1.73/1.94 dependent: set(dynamic_demod_all).
% 1.73/1.94 dependent: set(dynamic_demod).
% 1.73/1.94 dependent: set(order_eq).
% 1.73/1.94 dependent: set(back_demod).
% 1.73/1.94 dependent: set(lrpo).
% 1.73/1.94
% 1.73/1.94 ------------> process usable:
% 1.73/1.94 ** KEPT (pick-wt=5): 1 [] response(A,A)!=A.
% 1.73/1.94
% 1.73/1.94 ------------> process sos:
% 1.73/1.94 ** KEPT (pick-wt=3): 2 [] A=A.
% 1.73/1.94 ** KEPT (pick-wt=11): 3 [] response(response(lark,A),B)=response(A,response(B,B)).
% 1.73/1.94 Following clause subsumed by 2 during input processing: 0 [copy,2,flip.1] A=A.
% 1.73/1.94 ** KEPT (pick-wt=11): 4 [copy,3,flip.1] response(A,response(B,B))=response(response(lark,A),B).
% 1.73/1.94 Following clause subsumed by 3 during input processing: 0 [copy,4,flip.1] response(response(lark,A),B)=response(A,response(B,B)).
% 1.73/1.94
% 1.73/1.94 ======= end of input processing =======
% 1.73/1.94
% 1.73/1.94 =========== start of search ===========
% 1.73/1.94
% 1.73/1.94 -------- PROOF --------
% 1.73/1.94
% 1.73/1.94 ----> UNIT CONFLICT at 0.00 sec ----> 20 [binary,19.1,2.1] $F.
% 1.73/1.94
% 1.73/1.94 Length of proof is 4. Level of proof is 4.
% 1.73/1.94
% 1.73/1.94 ---------------- PROOF ----------------
% 1.73/1.94 % SZS status Unsatisfiable
% 1.73/1.94 % SZS output start Refutation
% See solution above
% 1.73/1.94 ------------ end of proof -------------
% 1.73/1.94
% 1.73/1.94
% 1.73/1.94 Search stopped by max_proofs option.
% 1.73/1.94
% 1.73/1.94
% 1.73/1.94 Search stopped by max_proofs option.
% 1.73/1.94
% 1.73/1.94 ============ end of search ============
% 1.73/1.94
% 1.73/1.94 -------------- statistics -------------
% 1.73/1.94 clauses given 5
% 1.73/1.94 clauses generated 18
% 1.73/1.94 clauses kept 19
% 1.73/1.94 clauses forward subsumed 13
% 1.73/1.94 clauses back subsumed 0
% 1.73/1.94 Kbytes malloced 976
% 1.73/1.94
% 1.73/1.94 ----------- times (seconds) -----------
% 1.73/1.94 user CPU time 0.00 (0 hr, 0 min, 0 sec)
% 1.73/1.94 system CPU time 0.00 (0 hr, 0 min, 0 sec)
% 1.73/1.94 wall-clock time 1 (0 hr, 0 min, 1 sec)
% 1.73/1.94
% 1.73/1.94 That finishes the proof of the theorem.
% 1.73/1.94
% 1.73/1.94 Process 16050 finished Wed Jul 27 02:28:32 2022
% 1.73/1.94 Otter interrupted
% 1.73/1.94 PROOF FOUND
%------------------------------------------------------------------------------