%------------------------------------------------------------------------------
% File : Otter---3.3
% Problem : GRP177-2 : TPTP v8.1.0. Bugfixed v1.2.1.
% Transfm : none
% Format : tptp:raw
% Command : otter-tptp-script %s
% Computer : n017.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 12:56:39 EDT 2022
% Result : Unsatisfiable 1.69s 1.90s
% Output : Refutation 1.69s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 13
% Syntax : Number of clauses : 29 ( 29 unt; 0 nHn; 8 RR)
% Number of literals : 29 ( 28 equ; 4 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 7 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 4 con; 0-2 aty)
% Number of variables : 37 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(1,axiom,
greatest_lower_bound(greatest_lower_bound(a,multiply(b,c)),multiply(greatest_lower_bound(a,b),greatest_lower_bound(a,c))) != greatest_lower_bound(a,multiply(b,c)),
file('GRP177-2.p',unknown),
[] ).
cnf(2,axiom,
A = A,
file('GRP177-2.p',unknown),
[] ).
cnf(4,axiom,
multiply(identity,A) = A,
file('GRP177-2.p',unknown),
[] ).
cnf(5,axiom,
multiply(inverse(A),A) = identity,
file('GRP177-2.p',unknown),
[] ).
cnf(7,axiom,
multiply(multiply(A,B),C) = multiply(A,multiply(B,C)),
file('GRP177-2.p',unknown),
[] ).
cnf(9,axiom,
greatest_lower_bound(A,B) = greatest_lower_bound(B,A),
file('GRP177-2.p',unknown),
[] ).
cnf(11,axiom,
greatest_lower_bound(A,greatest_lower_bound(B,C)) = greatest_lower_bound(greatest_lower_bound(A,B),C),
file('GRP177-2.p',unknown),
[] ).
cnf(13,plain,
greatest_lower_bound(greatest_lower_bound(A,B),C) = greatest_lower_bound(A,greatest_lower_bound(B,C)),
inference(flip,[status(thm),theory(equality)],[inference(copy,[status(thm)],[11])]),
[iquote('copy,11,flip.1')] ).
cnf(20,axiom,
greatest_lower_bound(A,A) = A,
file('GRP177-2.p',unknown),
[] ).
cnf(28,axiom,
multiply(A,greatest_lower_bound(B,C)) = greatest_lower_bound(multiply(A,B),multiply(A,C)),
file('GRP177-2.p',unknown),
[] ).
cnf(32,axiom,
multiply(greatest_lower_bound(A,B),C) = greatest_lower_bound(multiply(A,C),multiply(B,C)),
file('GRP177-2.p',unknown),
[] ).
cnf(33,axiom,
greatest_lower_bound(identity,a) = identity,
file('GRP177-2.p',unknown),
[] ).
cnf(35,axiom,
greatest_lower_bound(identity,b) = identity,
file('GRP177-2.p',unknown),
[] ).
cnf(37,axiom,
greatest_lower_bound(identity,c) = identity,
file('GRP177-2.p',unknown),
[] ).
cnf(39,plain,
greatest_lower_bound(a,greatest_lower_bound(multiply(b,c),greatest_lower_bound(multiply(a,a),greatest_lower_bound(multiply(b,a),greatest_lower_bound(multiply(a,c),multiply(b,c)))))) != greatest_lower_bound(a,multiply(b,c)),
inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[1]),28,32,32,13,13]),
[iquote('back_demod,1,demod,28,32,32,13,13')] ).
cnf(46,plain,
multiply(inverse(A),multiply(A,B)) = B,
inference(flip,[status(thm),theory(equality)],[inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[7,5]),4])]),
[iquote('para_into,7.1.1.1,5.1.1,demod,4,flip.1')] ).
cnf(170,plain,
greatest_lower_bound(multiply(A,identity),multiply(A,c)) = multiply(A,identity),
inference(flip,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[28,37])]),
[iquote('para_into,27.1.1.2,37.1.1,flip.1')] ).
cnf(174,plain,
greatest_lower_bound(multiply(A,identity),multiply(A,a)) = multiply(A,identity),
inference(flip,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[28,33])]),
[iquote('para_into,27.1.1.2,33.1.1,flip.1')] ).
cnf(183,plain,
multiply(inverse(inverse(A)),B) = multiply(A,B),
inference(para_into,[status(thm),theory(equality)],[46,46]),
[iquote('para_into,46.1.1.2,46.1.1')] ).
cnf(187,plain,
multiply(A,identity) = A,
inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[46,5]),183]),
[iquote('para_into,46.1.1.2,5.1.1,demod,183')] ).
cnf(190,plain,
greatest_lower_bound(A,multiply(A,a)) = A,
inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[174]),187,187]),
[iquote('back_demod,174,demod,187,187')] ).
cnf(194,plain,
greatest_lower_bound(A,multiply(A,c)) = A,
inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[170]),187,187]),
[iquote('back_demod,170,demod,187,187')] ).
cnf(243,plain,
greatest_lower_bound(A,greatest_lower_bound(multiply(A,a),B)) = greatest_lower_bound(A,B),
inference(flip,[status(thm),theory(equality)],[inference(para_from,[status(thm),theory(equality)],[190,13])]),
[iquote('para_from,190.1.1,12.1.1.1,flip.1')] ).
cnf(263,plain,
greatest_lower_bound(A,greatest_lower_bound(multiply(A,c),B)) = greatest_lower_bound(A,B),
inference(flip,[status(thm),theory(equality)],[inference(para_from,[status(thm),theory(equality)],[194,13])]),
[iquote('para_from,194.1.1,12.1.1.1,flip.1')] ).
cnf(288,plain,
greatest_lower_bound(A,multiply(b,A)) = A,
inference(flip,[status(thm),theory(equality)],[inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[32,35]),4,4])]),
[iquote('para_into,31.1.1.1,35.1.1,demod,4,4,flip.1')] ).
cnf(343,plain,
greatest_lower_bound(a,greatest_lower_bound(multiply(b,a),greatest_lower_bound(multiply(a,c),multiply(b,c)))) != greatest_lower_bound(a,multiply(b,c)),
inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[39,9]),13,13,13,20,243]),
[iquote('para_into,39.1.1.2,9.1.1,demod,13,13,13,20,243')] ).
cnf(464,plain,
greatest_lower_bound(A,greatest_lower_bound(multiply(b,A),B)) = greatest_lower_bound(A,B),
inference(flip,[status(thm),theory(equality)],[inference(para_from,[status(thm),theory(equality)],[288,13])]),
[iquote('para_from,288.1.1,12.1.1.1,flip.1')] ).
cnf(465,plain,
greatest_lower_bound(a,multiply(b,c)) != greatest_lower_bound(a,multiply(b,c)),
inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[343]),464,263]),
[iquote('back_demod,343,demod,464,263')] ).
cnf(466,plain,
$false,
inference(binary,[status(thm)],[465,2]),
[iquote('binary,465.1,2.1')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.11 % Problem : GRP177-2 : TPTP v8.1.0. Bugfixed v1.2.1.
% 0.03/0.12 % Command : otter-tptp-script %s
% 0.13/0.33 % Computer : n017.cluster.edu
% 0.13/0.33 % Model : x86_64 x86_64
% 0.13/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.33 % Memory : 8042.1875MB
% 0.13/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.13/0.33 % CPULimit : 300
% 0.13/0.33 % WCLimit : 300
% 0.13/0.33 % DateTime : Wed Jul 27 04:30:48 EDT 2022
% 0.13/0.33 % CPUTime :
% 1.69/1.89 ----- Otter 3.3f, August 2004 -----
% 1.69/1.89 The process was started by sandbox on n017.cluster.edu,
% 1.69/1.89 Wed Jul 27 04:30:48 2022
% 1.69/1.89 The command was "./otter". The process ID is 17347.
% 1.69/1.89
% 1.69/1.89 set(prolog_style_variables).
% 1.69/1.89 set(auto).
% 1.69/1.89 dependent: set(auto1).
% 1.69/1.89 dependent: set(process_input).
% 1.69/1.89 dependent: clear(print_kept).
% 1.69/1.89 dependent: clear(print_new_demod).
% 1.69/1.89 dependent: clear(print_back_demod).
% 1.69/1.89 dependent: clear(print_back_sub).
% 1.69/1.89 dependent: set(control_memory).
% 1.69/1.89 dependent: assign(max_mem, 12000).
% 1.69/1.89 dependent: assign(pick_given_ratio, 4).
% 1.69/1.89 dependent: assign(stats_level, 1).
% 1.69/1.89 dependent: assign(max_seconds, 10800).
% 1.69/1.89 clear(print_given).
% 1.69/1.89
% 1.69/1.89 list(usable).
% 1.69/1.89 0 [] A=A.
% 1.69/1.89 0 [] multiply(identity,X)=X.
% 1.69/1.89 0 [] multiply(inverse(X),X)=identity.
% 1.69/1.89 0 [] multiply(multiply(X,Y),Z)=multiply(X,multiply(Y,Z)).
% 1.69/1.89 0 [] greatest_lower_bound(X,Y)=greatest_lower_bound(Y,X).
% 1.69/1.89 0 [] least_upper_bound(X,Y)=least_upper_bound(Y,X).
% 1.69/1.89 0 [] greatest_lower_bound(X,greatest_lower_bound(Y,Z))=greatest_lower_bound(greatest_lower_bound(X,Y),Z).
% 1.69/1.89 0 [] least_upper_bound(X,least_upper_bound(Y,Z))=least_upper_bound(least_upper_bound(X,Y),Z).
% 1.69/1.89 0 [] least_upper_bound(X,X)=X.
% 1.69/1.89 0 [] greatest_lower_bound(X,X)=X.
% 1.69/1.89 0 [] least_upper_bound(X,greatest_lower_bound(X,Y))=X.
% 1.69/1.89 0 [] greatest_lower_bound(X,least_upper_bound(X,Y))=X.
% 1.69/1.89 0 [] multiply(X,least_upper_bound(Y,Z))=least_upper_bound(multiply(X,Y),multiply(X,Z)).
% 1.69/1.89 0 [] multiply(X,greatest_lower_bound(Y,Z))=greatest_lower_bound(multiply(X,Y),multiply(X,Z)).
% 1.69/1.89 0 [] multiply(least_upper_bound(Y,Z),X)=least_upper_bound(multiply(Y,X),multiply(Z,X)).
% 1.69/1.89 0 [] multiply(greatest_lower_bound(Y,Z),X)=greatest_lower_bound(multiply(Y,X),multiply(Z,X)).
% 1.69/1.89 0 [] greatest_lower_bound(identity,a)=identity.
% 1.69/1.89 0 [] greatest_lower_bound(identity,b)=identity.
% 1.69/1.89 0 [] greatest_lower_bound(identity,c)=identity.
% 1.69/1.89 0 [] greatest_lower_bound(greatest_lower_bound(a,multiply(b,c)),multiply(greatest_lower_bound(a,b),greatest_lower_bound(a,c)))!=greatest_lower_bound(a,multiply(b,c)).
% 1.69/1.89 end_of_list.
% 1.69/1.89
% 1.69/1.89 SCAN INPUT: prop=0, horn=1, equality=1, symmetry=0, max_lits=1.
% 1.69/1.89
% 1.69/1.89 All clauses are units, and equality is present; the
% 1.69/1.89 strategy will be Knuth-Bendix with positive clauses in sos.
% 1.69/1.89
% 1.69/1.89 dependent: set(knuth_bendix).
% 1.69/1.89 dependent: set(anl_eq).
% 1.69/1.89 dependent: set(para_from).
% 1.69/1.89 dependent: set(para_into).
% 1.69/1.89 dependent: clear(para_from_right).
% 1.69/1.89 dependent: clear(para_into_right).
% 1.69/1.89 dependent: set(para_from_vars).
% 1.69/1.89 dependent: set(eq_units_both_ways).
% 1.69/1.89 dependent: set(dynamic_demod_all).
% 1.69/1.89 dependent: set(dynamic_demod).
% 1.69/1.89 dependent: set(order_eq).
% 1.69/1.89 dependent: set(back_demod).
% 1.69/1.89 dependent: set(lrpo).
% 1.69/1.89
% 1.69/1.89 ------------> process usable:
% 1.69/1.89 ** KEPT (pick-wt=19): 1 [] greatest_lower_bound(greatest_lower_bound(a,multiply(b,c)),multiply(greatest_lower_bound(a,b),greatest_lower_bound(a,c)))!=greatest_lower_bound(a,multiply(b,c)).
% 1.69/1.89
% 1.69/1.89 ------------> process sos:
% 1.69/1.89 ** KEPT (pick-wt=3): 2 [] A=A.
% 1.69/1.89 ** KEPT (pick-wt=5): 3 [] multiply(identity,A)=A.
% 1.69/1.89 ---> New Demodulator: 4 [new_demod,3] multiply(identity,A)=A.
% 1.69/1.89 ** KEPT (pick-wt=6): 5 [] multiply(inverse(A),A)=identity.
% 1.69/1.89 ---> New Demodulator: 6 [new_demod,5] multiply(inverse(A),A)=identity.
% 1.69/1.89 ** KEPT (pick-wt=11): 7 [] multiply(multiply(A,B),C)=multiply(A,multiply(B,C)).
% 1.69/1.89 ---> New Demodulator: 8 [new_demod,7] multiply(multiply(A,B),C)=multiply(A,multiply(B,C)).
% 1.69/1.89 ** KEPT (pick-wt=7): 9 [] greatest_lower_bound(A,B)=greatest_lower_bound(B,A).
% 1.69/1.89 ** KEPT (pick-wt=7): 10 [] least_upper_bound(A,B)=least_upper_bound(B,A).
% 1.69/1.89 ** KEPT (pick-wt=11): 12 [copy,11,flip.1] greatest_lower_bound(greatest_lower_bound(A,B),C)=greatest_lower_bound(A,greatest_lower_bound(B,C)).
% 1.69/1.89 ---> New Demodulator: 13 [new_demod,12] greatest_lower_bound(greatest_lower_bound(A,B),C)=greatest_lower_bound(A,greatest_lower_bound(B,C)).
% 1.69/1.89 ** KEPT (pick-wt=11): 15 [copy,14,flip.1] least_upper_bound(least_upper_bound(A,B),C)=least_upper_bound(A,least_upper_bound(B,C)).
% 1.69/1.89 ---> New Demodulator: 16 [new_demod,15] least_upper_bound(least_upper_bound(A,B),C)=least_upper_bound(A,least_upper_bound(B,C)).
% 1.69/1.89 ** KEPT (pick-wt=5): 17 [] least_upper_bound(A,A)=A.
% 1.69/1.89 ---> New Demodulator: 18 [new_demod,17] least_upper_bound(A,A)=A.
% 1.69/1.89 ** KEPT (pick-wt=5): 19 [] greatest_lower_bound(A,A)=A.
% 1.69/1.90 ---> New Demodulator: 20 [new_demod,19] greatest_lower_bound(A,A)=A.
% 1.69/1.90 ** KEPT (pick-wt=7): 21 [] least_upper_bound(A,greatest_lower_bound(A,B))=A.
% 1.69/1.90 ---> New Demodulator: 22 [new_demod,21] least_upper_bound(A,greatest_lower_bound(A,B))=A.
% 1.69/1.90 ** KEPT (pick-wt=7): 23 [] greatest_lower_bound(A,least_upper_bound(A,B))=A.
% 1.69/1.90 ---> New Demodulator: 24 [new_demod,23] greatest_lower_bound(A,least_upper_bound(A,B))=A.
% 1.69/1.90 ** KEPT (pick-wt=13): 25 [] multiply(A,least_upper_bound(B,C))=least_upper_bound(multiply(A,B),multiply(A,C)).
% 1.69/1.90 ---> New Demodulator: 26 [new_demod,25] multiply(A,least_upper_bound(B,C))=least_upper_bound(multiply(A,B),multiply(A,C)).
% 1.69/1.90 ** KEPT (pick-wt=13): 27 [] multiply(A,greatest_lower_bound(B,C))=greatest_lower_bound(multiply(A,B),multiply(A,C)).
% 1.69/1.90 ---> New Demodulator: 28 [new_demod,27] multiply(A,greatest_lower_bound(B,C))=greatest_lower_bound(multiply(A,B),multiply(A,C)).
% 1.69/1.90 ** KEPT (pick-wt=13): 29 [] multiply(least_upper_bound(A,B),C)=least_upper_bound(multiply(A,C),multiply(B,C)).
% 1.69/1.90 ---> New Demodulator: 30 [new_demod,29] multiply(least_upper_bound(A,B),C)=least_upper_bound(multiply(A,C),multiply(B,C)).
% 1.69/1.90 ** KEPT (pick-wt=13): 31 [] multiply(greatest_lower_bound(A,B),C)=greatest_lower_bound(multiply(A,C),multiply(B,C)).
% 1.69/1.90 ---> New Demodulator: 32 [new_demod,31] multiply(greatest_lower_bound(A,B),C)=greatest_lower_bound(multiply(A,C),multiply(B,C)).
% 1.69/1.90 ** KEPT (pick-wt=5): 33 [] greatest_lower_bound(identity,a)=identity.
% 1.69/1.90 ---> New Demodulator: 34 [new_demod,33] greatest_lower_bound(identity,a)=identity.
% 1.69/1.90 ** KEPT (pick-wt=5): 35 [] greatest_lower_bound(identity,b)=identity.
% 1.69/1.90 ---> New Demodulator: 36 [new_demod,35] greatest_lower_bound(identity,b)=identity.
% 1.69/1.90 ** KEPT (pick-wt=5): 37 [] greatest_lower_bound(identity,c)=identity.
% 1.69/1.90 ---> New Demodulator: 38 [new_demod,37] greatest_lower_bound(identity,c)=identity.
% 1.69/1.90 Following clause subsumed by 2 during input processing: 0 [copy,2,flip.1] A=A.
% 1.69/1.90 >>>> Starting back demodulation with 4.
% 1.69/1.90 >>>> Starting back demodulation with 6.
% 1.69/1.90 >>>> Starting back demodulation with 8.
% 1.69/1.90 Following clause subsumed by 9 during input processing: 0 [copy,9,flip.1] greatest_lower_bound(A,B)=greatest_lower_bound(B,A).
% 1.69/1.90 Following clause subsumed by 10 during input processing: 0 [copy,10,flip.1] least_upper_bound(A,B)=least_upper_bound(B,A).
% 1.69/1.90 >>>> Starting back demodulation with 13.
% 1.69/1.90 >> back demodulating 1 with 13.
% 1.69/1.90 >>>> Starting back demodulation with 16.
% 1.69/1.90 >>>> Starting back demodulation with 18.
% 1.69/1.90 >>>> Starting back demodulation with 20.
% 1.69/1.90 >>>> Starting back demodulation with 22.
% 1.69/1.90 >>>> Starting back demodulation with 24.
% 1.69/1.90 >>>> Starting back demodulation with 26.
% 1.69/1.90 >>>> Starting back demodulation with 28.
% 1.69/1.90 >>>> Starting back demodulation with 30.
% 1.69/1.90 >>>> Starting back demodulation with 32.
% 1.69/1.90 >>>> Starting back demodulation with 34.
% 1.69/1.90 >>>> Starting back demodulation with 36.
% 1.69/1.90 >>>> Starting back demodulation with 38.
% 1.69/1.90
% 1.69/1.90 ======= end of input processing =======
% 1.69/1.90
% 1.69/1.90 =========== start of search ===========
% 1.69/1.90
% 1.69/1.90 -------- PROOF --------
% 1.69/1.90
% 1.69/1.90 ----> UNIT CONFLICT at 0.01 sec ----> 466 [binary,465.1,2.1] $F.
% 1.69/1.90
% 1.69/1.90 Length of proof is 15. Level of proof is 7.
% 1.69/1.90
% 1.69/1.90 ---------------- PROOF ----------------
% 1.69/1.90 % SZS status Unsatisfiable
% 1.69/1.90 % SZS output start Refutation
% See solution above
% 1.69/1.90 ------------ end of proof -------------
% 1.69/1.90
% 1.69/1.90
% 1.69/1.90 Search stopped by max_proofs option.
% 1.69/1.90
% 1.69/1.90
% 1.69/1.90 Search stopped by max_proofs option.
% 1.69/1.90
% 1.69/1.90 ============ end of search ============
% 1.69/1.90
% 1.69/1.90 -------------- statistics -------------
% 1.69/1.90 clauses given 62
% 1.69/1.90 clauses generated 749
% 1.69/1.90 clauses kept 245
% 1.69/1.90 clauses forward subsumed 562
% 1.69/1.90 clauses back subsumed 0
% 1.69/1.90 Kbytes malloced 2929
% 1.69/1.90
% 1.69/1.90 ----------- times (seconds) -----------
% 1.69/1.90 user CPU time 0.01 (0 hr, 0 min, 0 sec)
% 1.69/1.90 system CPU time 0.00 (0 hr, 0 min, 0 sec)
% 1.69/1.90 wall-clock time 1 (0 hr, 0 min, 1 sec)
% 1.69/1.90
% 1.69/1.90 That finishes the proof of the theorem.
% 1.69/1.90
% 1.69/1.90 Process 17347 finished Wed Jul 27 04:30:49 2022
% 1.69/1.90 Otter interrupted
% 1.69/1.90 PROOF FOUND
%------------------------------------------------------------------------------