TSTP Solution File: RNG008-4 by Otter---3.3
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%------------------------------------------------------------------------------
% File : Otter---3.3
% Problem : RNG008-4 : TPTP v8.1.0. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : otter-tptp-script %s
% Computer : n023.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 13:12:02 EDT 2022
% Result : Unsatisfiable 1.92s 2.14s
% Output : Refutation 1.92s
% Verified :
% SZS Type : Refutation
% Derivation depth : 12
% Number of leaves : 13
% Syntax : Number of clauses : 32 ( 32 unt; 0 nHn; 4 RR)
% Number of literals : 32 ( 31 equ; 1 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 : 7 ( 7 usr; 4 con; 0-2 aty)
% Number of variables : 50 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(1,axiom,
multiply(b,a) != c,
file('RNG008-4.p',unknown),
[] ).
cnf(4,axiom,
add(additive_identity,A) = A,
file('RNG008-4.p',unknown),
[] ).
cnf(5,axiom,
add(additive_inverse(A),A) = additive_identity,
file('RNG008-4.p',unknown),
[] ).
cnf(7,axiom,
multiply(A,add(B,C)) = add(multiply(A,B),multiply(A,C)),
file('RNG008-4.p',unknown),
[] ).
cnf(10,axiom,
multiply(add(A,B),C) = add(multiply(A,C),multiply(B,C)),
file('RNG008-4.p',unknown),
[] ).
cnf(14,axiom,
additive_inverse(additive_inverse(A)) = A,
file('RNG008-4.p',unknown),
[] ).
cnf(21,axiom,
multiply(A,additive_inverse(B)) = additive_inverse(multiply(A,B)),
file('RNG008-4.p',unknown),
[] ).
cnf(23,plain,
additive_inverse(multiply(A,B)) = multiply(A,additive_inverse(B)),
inference(flip,[status(thm),theory(equality)],[inference(copy,[status(thm)],[21])]),
[iquote('copy,21,flip.1')] ).
cnf(24,axiom,
multiply(additive_inverse(A),B) = additive_inverse(multiply(A,B)),
file('RNG008-4.p',unknown),
[] ).
cnf(25,plain,
multiply(additive_inverse(A),B) = multiply(A,additive_inverse(B)),
inference(demod,[status(thm),theory(equality)],[inference(copy,[status(thm)],[24]),23]),
[iquote('copy,24,demod,23')] ).
cnf(27,axiom,
add(add(A,B),C) = add(A,add(B,C)),
file('RNG008-4.p',unknown),
[] ).
cnf(28,axiom,
add(A,B) = add(B,A),
file('RNG008-4.p',unknown),
[] ).
cnf(30,axiom,
multiply(multiply(A,B),C) = multiply(A,multiply(B,C)),
file('RNG008-4.p',unknown),
[] ).
cnf(32,axiom,
multiply(A,A) = A,
file('RNG008-4.p',unknown),
[] ).
cnf(33,axiom,
multiply(a,b) = c,
file('RNG008-4.p',unknown),
[] ).
cnf(36,plain,
add(A,additive_inverse(A)) = additive_identity,
inference(para_into,[status(thm),theory(equality)],[5,14]),
[iquote('para_into,5.1.1.1,13.1.1')] ).
cnf(42,plain,
add(A,add(multiply(B,A),add(multiply(A,B),B))) = add(A,B),
inference(flip,[status(thm),theory(equality)],[inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[7,32]),10,32,10,32,27])]),
[iquote('para_into,7.1.1,31.1.1,demod,10,32,10,32,27,flip.1')] ).
cnf(45,plain,
add(A,additive_identity) = A,
inference(flip,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[28,4])]),
[iquote('para_into,28.1.1,3.1.1,flip.1')] ).
cnf(49,plain,
multiply(A,additive_inverse(A)) = additive_inverse(A),
inference(flip,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[23,32])]),
[iquote('para_into,22.1.1.1,31.1.1,flip.1')] ).
cnf(66,plain,
multiply(additive_inverse(A),A) = A,
inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[49,14]),14]),
[iquote('para_into,48.1.1.2,13.1.1,demod,14')] ).
cnf(72,plain,
multiply(A,multiply(additive_inverse(B),multiply(A,B))) = multiply(A,B),
inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[66,23]),30]),
[iquote('para_into,66.1.1.1,22.1.1,demod,30')] ).
cnf(98,plain,
additive_inverse(A) = A,
inference(flip,[status(thm),theory(equality)],[inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[25,66]),49])]),
[iquote('para_into,25.1.1,66.1.1,demod,49,flip.1')] ).
cnf(109,plain,
multiply(A,multiply(B,multiply(A,B))) = multiply(A,B),
inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[72]),98]),
[iquote('back_demod,72,demod,98')] ).
cnf(116,plain,
add(A,A) = additive_identity,
inference(demod,[status(thm),theory(equality)],[inference(back_demod,[status(thm)],[36]),98]),
[iquote('back_demod,36,demod,98')] ).
cnf(117,plain,
add(A,add(A,B)) = B,
inference(flip,[status(thm),theory(equality)],[inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[27,116]),4])]),
[iquote('para_into,26.1.1.1,115.1.1,demod,4,flip.1')] ).
cnf(123,plain,
add(A,add(B,A)) = B,
inference(para_into,[status(thm),theory(equality)],[117,28]),
[iquote('para_into,117.1.1.2,28.1.1')] ).
cnf(132,plain,
multiply(A,multiply(A,B)) = multiply(A,B),
inference(flip,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[30,32])]),
[iquote('para_into,29.1.1.1,31.1.1,flip.1')] ).
cnf(201,plain,
add(multiply(A,B),add(multiply(B,A),B)) = B,
inference(demod,[status(thm),theory(equality)],[inference(para_from,[status(thm),theory(equality)],[42,123]),27,27,123]),
[iquote('para_from,42.1.1,122.1.1.2,demod,27,27,123')] ).
cnf(320,plain,
multiply(A,multiply(B,A)) = multiply(A,B),
inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[201,132]),30,123]),
[iquote('para_into,201.1.1.1,132.1.1,demod,30,123')] ).
cnf(321,plain,
multiply(A,B) = multiply(B,A),
inference(demod,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[201,109]),320,30,32,320,116,45,320]),
[iquote('para_into,201.1.1.1,109.1.1,demod,320,30,32,320,116,45,320')] ).
cnf(385,plain,
multiply(b,a) = c,
inference(flip,[status(thm),theory(equality)],[inference(para_into,[status(thm),theory(equality)],[321,33])]),
[iquote('para_into,321.1.1,33.1.1,flip.1')] ).
cnf(387,plain,
$false,
inference(binary,[status(thm)],[385,1]),
[iquote('binary,385.1,1.1')] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.11 % Problem : RNG008-4 : TPTP v8.1.0. Released v1.0.0.
% 0.06/0.12 % Command : otter-tptp-script %s
% 0.12/0.33 % Computer : n023.cluster.edu
% 0.12/0.33 % Model : x86_64 x86_64
% 0.12/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33 % Memory : 8042.1875MB
% 0.12/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33 % CPULimit : 300
% 0.12/0.33 % WCLimit : 300
% 0.12/0.33 % DateTime : Wed Jul 27 02:34:03 EDT 2022
% 0.12/0.33 % CPUTime :
% 1.92/2.12 ----- Otter 3.3f, August 2004 -----
% 1.92/2.12 The process was started by sandbox on n023.cluster.edu,
% 1.92/2.12 Wed Jul 27 02:34:03 2022
% 1.92/2.12 The command was "./otter". The process ID is 18690.
% 1.92/2.12
% 1.92/2.12 set(prolog_style_variables).
% 1.92/2.12 set(auto).
% 1.92/2.12 dependent: set(auto1).
% 1.92/2.12 dependent: set(process_input).
% 1.92/2.12 dependent: clear(print_kept).
% 1.92/2.12 dependent: clear(print_new_demod).
% 1.92/2.12 dependent: clear(print_back_demod).
% 1.92/2.12 dependent: clear(print_back_sub).
% 1.92/2.12 dependent: set(control_memory).
% 1.92/2.12 dependent: assign(max_mem, 12000).
% 1.92/2.12 dependent: assign(pick_given_ratio, 4).
% 1.92/2.12 dependent: assign(stats_level, 1).
% 1.92/2.12 dependent: assign(max_seconds, 10800).
% 1.92/2.12 clear(print_given).
% 1.92/2.12
% 1.92/2.12 list(usable).
% 1.92/2.12 0 [] A=A.
% 1.92/2.12 0 [] add(additive_identity,X)=X.
% 1.92/2.12 0 [] add(additive_inverse(X),X)=additive_identity.
% 1.92/2.12 0 [] multiply(X,add(Y,Z))=add(multiply(X,Y),multiply(X,Z)).
% 1.92/2.12 0 [] multiply(add(X,Y),Z)=add(multiply(X,Z),multiply(Y,Z)).
% 1.92/2.12 0 [] additive_inverse(additive_identity)=additive_identity.
% 1.92/2.12 0 [] additive_inverse(additive_inverse(X))=X.
% 1.92/2.12 0 [] multiply(X,additive_identity)=additive_identity.
% 1.92/2.12 0 [] multiply(additive_identity,X)=additive_identity.
% 1.92/2.12 0 [] additive_inverse(add(X,Y))=add(additive_inverse(X),additive_inverse(Y)).
% 1.92/2.12 0 [] multiply(X,additive_inverse(Y))=additive_inverse(multiply(X,Y)).
% 1.92/2.12 0 [] multiply(additive_inverse(X),Y)=additive_inverse(multiply(X,Y)).
% 1.92/2.12 0 [] add(add(X,Y),Z)=add(X,add(Y,Z)).
% 1.92/2.12 0 [] add(X,Y)=add(Y,X).
% 1.92/2.12 0 [] multiply(multiply(X,Y),Z)=multiply(X,multiply(Y,Z)).
% 1.92/2.12 0 [] multiply(X,X)=X.
% 1.92/2.12 0 [] multiply(a,b)=c.
% 1.92/2.12 0 [] multiply(b,a)!=c.
% 1.92/2.12 end_of_list.
% 1.92/2.12
% 1.92/2.12 SCAN INPUT: prop=0, horn=1, equality=1, symmetry=0, max_lits=1.
% 1.92/2.12
% 1.92/2.12 All clauses are units, and equality is present; the
% 1.92/2.12 strategy will be Knuth-Bendix with positive clauses in sos.
% 1.92/2.12
% 1.92/2.12 dependent: set(knuth_bendix).
% 1.92/2.12 dependent: set(anl_eq).
% 1.92/2.12 dependent: set(para_from).
% 1.92/2.12 dependent: set(para_into).
% 1.92/2.12 dependent: clear(para_from_right).
% 1.92/2.12 dependent: clear(para_into_right).
% 1.92/2.12 dependent: set(para_from_vars).
% 1.92/2.12 dependent: set(eq_units_both_ways).
% 1.92/2.12 dependent: set(dynamic_demod_all).
% 1.92/2.12 dependent: set(dynamic_demod).
% 1.92/2.12 dependent: set(order_eq).
% 1.92/2.12 dependent: set(back_demod).
% 1.92/2.12 dependent: set(lrpo).
% 1.92/2.12
% 1.92/2.12 ------------> process usable:
% 1.92/2.12 ** KEPT (pick-wt=5): 1 [] multiply(b,a)!=c.
% 1.92/2.12
% 1.92/2.12 ------------> process sos:
% 1.92/2.12 ** KEPT (pick-wt=3): 2 [] A=A.
% 1.92/2.12 ** KEPT (pick-wt=5): 3 [] add(additive_identity,A)=A.
% 1.92/2.12 ---> New Demodulator: 4 [new_demod,3] add(additive_identity,A)=A.
% 1.92/2.12 ** KEPT (pick-wt=6): 5 [] add(additive_inverse(A),A)=additive_identity.
% 1.92/2.12 ---> New Demodulator: 6 [new_demod,5] add(additive_inverse(A),A)=additive_identity.
% 1.92/2.12 ** KEPT (pick-wt=13): 7 [] multiply(A,add(B,C))=add(multiply(A,B),multiply(A,C)).
% 1.92/2.12 ---> New Demodulator: 8 [new_demod,7] multiply(A,add(B,C))=add(multiply(A,B),multiply(A,C)).
% 1.92/2.12 ** KEPT (pick-wt=13): 9 [] multiply(add(A,B),C)=add(multiply(A,C),multiply(B,C)).
% 1.92/2.12 ---> New Demodulator: 10 [new_demod,9] multiply(add(A,B),C)=add(multiply(A,C),multiply(B,C)).
% 1.92/2.12 ** KEPT (pick-wt=4): 11 [] additive_inverse(additive_identity)=additive_identity.
% 1.92/2.12 ---> New Demodulator: 12 [new_demod,11] additive_inverse(additive_identity)=additive_identity.
% 1.92/2.12 ** KEPT (pick-wt=5): 13 [] additive_inverse(additive_inverse(A))=A.
% 1.92/2.12 ---> New Demodulator: 14 [new_demod,13] additive_inverse(additive_inverse(A))=A.
% 1.92/2.12 ** KEPT (pick-wt=5): 15 [] multiply(A,additive_identity)=additive_identity.
% 1.92/2.12 ---> New Demodulator: 16 [new_demod,15] multiply(A,additive_identity)=additive_identity.
% 1.92/2.12 ** KEPT (pick-wt=5): 17 [] multiply(additive_identity,A)=additive_identity.
% 1.92/2.12 ---> New Demodulator: 18 [new_demod,17] multiply(additive_identity,A)=additive_identity.
% 1.92/2.12 ** KEPT (pick-wt=10): 19 [] additive_inverse(add(A,B))=add(additive_inverse(A),additive_inverse(B)).
% 1.92/2.12 ---> New Demodulator: 20 [new_demod,19] additive_inverse(add(A,B))=add(additive_inverse(A),additive_inverse(B)).
% 1.92/2.12 ** KEPT (pick-wt=9): 22 [copy,21,flip.1] additive_inverse(multiply(A,B))=multiply(A,additive_inverse(B)).
% 1.92/2.12 ---> New Demodulator: 23 [new_demod,22] additive_inverse(multiply(A,B))=multiply(A,additive_inverse(B)).
% 1.92/2.12 ** KEPT (pick-wt=9): 25 [copy,24,demod,23] multiply(additive_inverse(A),B)=multiply(A,additive_inverse(B)).
% 1.92/2.12 ** KEPT (pick-wt=11): 26 [] add(add(A,B),C)=add(A,add(B,C)).
% 1.92/2.14 ---> New Demodulator: 27 [new_demod,26] add(add(A,B),C)=add(A,add(B,C)).
% 1.92/2.14 ** KEPT (pick-wt=7): 28 [] add(A,B)=add(B,A).
% 1.92/2.14 ** KEPT (pick-wt=11): 29 [] multiply(multiply(A,B),C)=multiply(A,multiply(B,C)).
% 1.92/2.14 ---> New Demodulator: 30 [new_demod,29] multiply(multiply(A,B),C)=multiply(A,multiply(B,C)).
% 1.92/2.14 ** KEPT (pick-wt=5): 31 [] multiply(A,A)=A.
% 1.92/2.14 ---> New Demodulator: 32 [new_demod,31] multiply(A,A)=A.
% 1.92/2.14 ** KEPT (pick-wt=5): 33 [] multiply(a,b)=c.
% 1.92/2.14 ---> New Demodulator: 34 [new_demod,33] multiply(a,b)=c.
% 1.92/2.14 Following clause subsumed by 2 during input processing: 0 [copy,2,flip.1] A=A.
% 1.92/2.14 >>>> Starting back demodulation with 4.
% 1.92/2.14 >>>> Starting back demodulation with 6.
% 1.92/2.14 >>>> Starting back demodulation with 8.
% 1.92/2.14 >>>> Starting back demodulation with 10.
% 1.92/2.14 >>>> Starting back demodulation with 12.
% 1.92/2.14 >>>> Starting back demodulation with 14.
% 1.92/2.14 >>>> Starting back demodulation with 16.
% 1.92/2.14 >>>> Starting back demodulation with 18.
% 1.92/2.14 >>>> Starting back demodulation with 20.
% 1.92/2.14 >>>> Starting back demodulation with 23.
% 1.92/2.14 ** KEPT (pick-wt=9): 35 [copy,25,flip.1] multiply(A,additive_inverse(B))=multiply(additive_inverse(A),B).
% 1.92/2.14 >>>> Starting back demodulation with 27.
% 1.92/2.14 Following clause subsumed by 28 during input processing: 0 [copy,28,flip.1] add(A,B)=add(B,A).
% 1.92/2.14 >>>> Starting back demodulation with 30.
% 1.92/2.14 >>>> Starting back demodulation with 32.
% 1.92/2.14 >>>> Starting back demodulation with 34.
% 1.92/2.14 Following clause subsumed by 25 during input processing: 0 [copy,35,flip.1] multiply(additive_inverse(A),B)=multiply(A,additive_inverse(B)).
% 1.92/2.14
% 1.92/2.14 ======= end of input processing =======
% 1.92/2.14
% 1.92/2.14 =========== start of search ===========
% 1.92/2.14
% 1.92/2.14 -------- PROOF --------
% 1.92/2.14
% 1.92/2.14 ----> UNIT CONFLICT at 0.02 sec ----> 387 [binary,385.1,1.1] $F.
% 1.92/2.14
% 1.92/2.14 Length of proof is 18. Level of proof is 11.
% 1.92/2.14
% 1.92/2.14 ---------------- PROOF ----------------
% 1.92/2.14 % SZS status Unsatisfiable
% 1.92/2.14 % SZS output start Refutation
% See solution above
% 1.92/2.14 ------------ end of proof -------------
% 1.92/2.14
% 1.92/2.14
% 1.92/2.14 Search stopped by max_proofs option.
% 1.92/2.14
% 1.92/2.14
% 1.92/2.14 Search stopped by max_proofs option.
% 1.92/2.14
% 1.92/2.14 ============ end of search ============
% 1.92/2.14
% 1.92/2.14 -------------- statistics -------------
% 1.92/2.14 clauses given 45
% 1.92/2.14 clauses generated 750
% 1.92/2.14 clauses kept 250
% 1.92/2.14 clauses forward subsumed 699
% 1.92/2.14 clauses back subsumed 64
% 1.92/2.14 Kbytes malloced 1953
% 1.92/2.14
% 1.92/2.14 ----------- times (seconds) -----------
% 1.92/2.14 user CPU time 0.02 (0 hr, 0 min, 0 sec)
% 1.92/2.14 system CPU time 0.00 (0 hr, 0 min, 0 sec)
% 1.92/2.14 wall-clock time 2 (0 hr, 0 min, 2 sec)
% 1.92/2.14
% 1.92/2.14 That finishes the proof of the theorem.
% 1.92/2.14
% 1.92/2.14 Process 18690 finished Wed Jul 27 02:34:05 2022
% 1.92/2.14 Otter interrupted
% 1.92/2.14 PROOF FOUND
%------------------------------------------------------------------------------