## TSTP Solution File: NLP117-1 by Otter---3.3

View Problem - Process Solution

```%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : NLP117-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n006.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 13:06:50 EDT 2022

% Result   : Unsatisfiable 1.90s 2.13s
% Output   : Refutation 1.90s
% Verified :
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :   36
% Syntax   : Number of clauses     :   54 (  20 unt;  16 nHn;  54 RR)
%            Number of literals    :  120 (   0 equ;  51 neg)
%            Maximal clause size   :   18 (   2 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of predicates  :   19 (  18 usr;   2 prp; 0-3 aty)
%            Number of functors    :   12 (  12 usr;  12 con; 0-0 aty)
%            Number of variables   :   12 (   0 sgn)

%------------------------------------------------------------------------------
cnf(1,axiom,
( ~ ssSkC0
| lonely(skc12,skc17) ),
file('NLP117-1.p',unknown),
[] ).

cnf(2,axiom,
( ~ ssSkC0
| street(skc12,skc17) ),
file('NLP117-1.p',unknown),
[] ).

cnf(3,axiom,
( ~ ssSkC0
| barrel(skc12,skc13) ),
file('NLP117-1.p',unknown),
[] ).

cnf(4,axiom,
( ~ ssSkC0
| present(skc12,skc13) ),
file('NLP117-1.p',unknown),
[] ).

cnf(5,axiom,
( ~ ssSkC0
| event(skc12,skc13) ),
file('NLP117-1.p',unknown),
[] ).

cnf(6,axiom,
( ~ ssSkC0
| hollywood_placename(skc12,skc15) ),
file('NLP117-1.p',unknown),
[] ).

cnf(7,axiom,
( ~ ssSkC0
| placename(skc12,skc15) ),
file('NLP117-1.p',unknown),
[] ).

cnf(8,axiom,
( ~ ssSkC0
| city(skc12,skc16) ),
file('NLP117-1.p',unknown),
[] ).

cnf(9,axiom,
( ~ ssSkC0
| chevy(skc12,skc14) ),
file('NLP117-1.p',unknown),
[] ).

cnf(10,axiom,
( ~ ssSkC0
| white(skc12,skc14) ),
file('NLP117-1.p',unknown),
[] ).

cnf(11,axiom,
( ~ ssSkC0
| dirty(skc12,skc14) ),
file('NLP117-1.p',unknown),
[] ).

cnf(12,axiom,
( ~ ssSkC0
| old(skc12,skc14) ),
file('NLP117-1.p',unknown),
[] ).

cnf(13,axiom,
( ~ ssSkC0
| down(skc12,skc13,skc17) ),
file('NLP117-1.p',unknown),
[] ).

cnf(14,axiom,
( ~ ssSkC0
| in(skc12,skc13,skc16) ),
file('NLP117-1.p',unknown),
[] ).

cnf(15,axiom,
( ~ ssSkC0
| of(skc12,skc15,skc16) ),
file('NLP117-1.p',unknown),
[] ).

cnf(16,axiom,
( ~ ssSkC0
| agent(skc12,skc13,skc14) ),
file('NLP117-1.p',unknown),
[] ).

cnf(17,axiom,
( ~ down(A,B,C)
| ~ lonely(A,C)
| ~ street(A,C)
| ~ barrel(A,B)
| ~ present(A,B)
| ~ event(A,B)
| ~ hollywood_placename(A,D)
| ~ placename(A,D)
| ~ in(A,B,E)
| ~ city(A,E)
| ~ of(A,D,E)
| ~ chevy(A,F)
| ~ white(A,F)
| ~ dirty(A,F)
| ~ old(A,F)
| ~ agent(A,B,F)
| ~ actual_world(A)
| ssSkC0 ),
file('NLP117-1.p',unknown),
[] ).

cnf(18,axiom,
( ~ agent(A,B,C)
| ~ old(A,C)
| ~ dirty(A,C)
| ~ white(A,C)
| ~ chevy(A,C)
| ~ barrel(A,B)
| ~ present(A,B)
| ~ event(A,B)
| ~ hollywood_placename(A,D)
| ~ placename(A,D)
| ~ in(A,B,E)
| ~ city(A,E)
| ~ of(A,D,E)
| ~ street(A,F)
| ~ lonely(A,F)
| ~ down(A,B,F)
| ~ actual_world(A)
| ~ ssSkC0 ),
file('NLP117-1.p',unknown),
[] ).

cnf(19,axiom,
actual_world(skc18),
file('NLP117-1.p',unknown),
[] ).

cnf(20,axiom,
actual_world(skc12),
file('NLP117-1.p',unknown),
[] ).

cnf(21,axiom,
( ssSkC0
| old(skc18,skc23) ),
file('NLP117-1.p',unknown),
[] ).

cnf(22,axiom,
( ssSkC0
| dirty(skc18,skc23) ),
file('NLP117-1.p',unknown),
[] ).

cnf(23,axiom,
( ssSkC0
| white(skc18,skc23) ),
file('NLP117-1.p',unknown),
[] ).

cnf(24,axiom,
( ssSkC0
| chevy(skc18,skc23) ),
file('NLP117-1.p',unknown),
[] ).

cnf(25,axiom,
( ssSkC0
| barrel(skc18,skc19) ),
file('NLP117-1.p',unknown),
[] ).

cnf(26,axiom,
( ssSkC0
| present(skc18,skc19) ),
file('NLP117-1.p',unknown),
[] ).

cnf(27,axiom,
( ssSkC0
| event(skc18,skc19) ),
file('NLP117-1.p',unknown),
[] ).

cnf(28,axiom,
( ssSkC0
| hollywood_placename(skc18,skc21) ),
file('NLP117-1.p',unknown),
[] ).

cnf(29,axiom,
( ssSkC0
| placename(skc18,skc21) ),
file('NLP117-1.p',unknown),
[] ).

cnf(30,axiom,
( ssSkC0
| city(skc18,skc22) ),
file('NLP117-1.p',unknown),
[] ).

cnf(31,axiom,
( ssSkC0
| street(skc18,skc20) ),
file('NLP117-1.p',unknown),
[] ).

cnf(32,axiom,
( ssSkC0
| lonely(skc18,skc20) ),
file('NLP117-1.p',unknown),
[] ).

cnf(33,axiom,
( ssSkC0
| agent(skc18,skc19,skc23) ),
file('NLP117-1.p',unknown),
[] ).

cnf(34,axiom,
( ssSkC0
| in(skc18,skc19,skc22) ),
file('NLP117-1.p',unknown),
[] ).

cnf(35,axiom,
( ssSkC0
| of(skc18,skc21,skc22) ),
file('NLP117-1.p',unknown),
[] ).

cnf(36,axiom,
( ssSkC0
| down(skc18,skc19,skc20) ),
file('NLP117-1.p',unknown),
[] ).

cnf(37,plain,
ssSkC0,
inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(factor_simp,[status(thm)],[inference(hyper,[status(thm)],[36,17,32,31,25,26,27,28,29,34,30,35,24,23,22,21,33,19])])])])])])])])])])])])])])])])]),
[iquote('hyper,36,17,32,31,25,26,27,28,29,34,30,35,24,23,22,21,33,19,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp,factor_simp')] ).

cnf(38,plain,
agent(skc12,skc13,skc14),
inference(hyper,[status(thm)],[37,16]),
[iquote('hyper,37,16')] ).

cnf(39,plain,
of(skc12,skc15,skc16),
inference(hyper,[status(thm)],[37,15]),
[iquote('hyper,37,15')] ).

cnf(40,plain,
in(skc12,skc13,skc16),
inference(hyper,[status(thm)],[37,14]),
[iquote('hyper,37,14')] ).

cnf(41,plain,
down(skc12,skc13,skc17),
inference(hyper,[status(thm)],[37,13]),
[iquote('hyper,37,13')] ).

cnf(42,plain,
old(skc12,skc14),
inference(hyper,[status(thm)],[37,12]),
[iquote('hyper,37,12')] ).

cnf(43,plain,
dirty(skc12,skc14),
inference(hyper,[status(thm)],[37,11]),
[iquote('hyper,37,11')] ).

cnf(44,plain,
white(skc12,skc14),
inference(hyper,[status(thm)],[37,10]),
[iquote('hyper,37,10')] ).

cnf(45,plain,
chevy(skc12,skc14),
inference(hyper,[status(thm)],[37,9]),
[iquote('hyper,37,9')] ).

cnf(46,plain,
city(skc12,skc16),
inference(hyper,[status(thm)],[37,8]),
[iquote('hyper,37,8')] ).

cnf(47,plain,
placename(skc12,skc15),
inference(hyper,[status(thm)],[37,7]),
[iquote('hyper,37,7')] ).

cnf(48,plain,
hollywood_placename(skc12,skc15),
inference(hyper,[status(thm)],[37,6]),
[iquote('hyper,37,6')] ).

cnf(49,plain,
event(skc12,skc13),
inference(hyper,[status(thm)],[37,5]),
[iquote('hyper,37,5')] ).

cnf(50,plain,
present(skc12,skc13),
inference(hyper,[status(thm)],[37,4]),
[iquote('hyper,37,4')] ).

cnf(51,plain,
barrel(skc12,skc13),
inference(hyper,[status(thm)],[37,3]),
[iquote('hyper,37,3')] ).

cnf(52,plain,
street(skc12,skc17),
inference(hyper,[status(thm)],[37,2]),
[iquote('hyper,37,2')] ).

cnf(53,plain,
lonely(skc12,skc17),
inference(hyper,[status(thm)],[37,1]),
[iquote('hyper,37,1')] ).

cnf(54,plain,
\$false,
inference(hyper,[status(thm)],[41,18,38,42,43,44,45,51,50,49,48,47,40,46,39,52,53,20,37]),
[iquote('hyper,41,18,38,42,43,44,45,51,50,49,48,47,40,46,39,52,53,20,37')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.10/0.11  % Problem  : NLP117-1 : TPTP v8.1.0. Released v2.4.0.
% 0.10/0.12  % Command  : otter-tptp-script %s
% 0.12/0.33  % Computer : n006.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 08:56:01 EDT 2022
% 0.12/0.33  % CPUTime  :
% 1.90/2.13  ----- Otter 3.3f, August 2004 -----
% 1.90/2.13  The process was started by sandbox2 on n006.cluster.edu,
% 1.90/2.13  Wed Jul 27 08:56:02 2022
% 1.90/2.13  The command was "./otter".  The process ID is 27404.
% 1.90/2.13
% 1.90/2.13  set(prolog_style_variables).
% 1.90/2.13  set(auto).
% 1.90/2.13     dependent: set(auto1).
% 1.90/2.13     dependent: set(process_input).
% 1.90/2.13     dependent: clear(print_kept).
% 1.90/2.13     dependent: clear(print_new_demod).
% 1.90/2.13     dependent: clear(print_back_demod).
% 1.90/2.13     dependent: clear(print_back_sub).
% 1.90/2.13     dependent: set(control_memory).
% 1.90/2.13     dependent: assign(max_mem, 12000).
% 1.90/2.13     dependent: assign(pick_given_ratio, 4).
% 1.90/2.13     dependent: assign(stats_level, 1).
% 1.90/2.13     dependent: assign(max_seconds, 10800).
% 1.90/2.13  clear(print_given).
% 1.90/2.13
% 1.90/2.13  list(usable).
% 1.90/2.13  0 [] actual_world(skc18).
% 1.90/2.13  0 [] actual_world(skc12).
% 1.90/2.13  0 [] ssSkC0|old(skc18,skc23).
% 1.90/2.13  0 [] ssSkC0|dirty(skc18,skc23).
% 1.90/2.13  0 [] ssSkC0|white(skc18,skc23).
% 1.90/2.13  0 [] ssSkC0|chevy(skc18,skc23).
% 1.90/2.13  0 [] ssSkC0|barrel(skc18,skc19).
% 1.90/2.13  0 [] ssSkC0|present(skc18,skc19).
% 1.90/2.13  0 [] ssSkC0|event(skc18,skc19).
% 1.90/2.13  0 [] ssSkC0|hollywood_placename(skc18,skc21).
% 1.90/2.13  0 [] ssSkC0|placename(skc18,skc21).
% 1.90/2.13  0 [] ssSkC0|city(skc18,skc22).
% 1.90/2.13  0 [] ssSkC0|street(skc18,skc20).
% 1.90/2.13  0 [] ssSkC0|lonely(skc18,skc20).
% 1.90/2.13  0 [] -ssSkC0|lonely(skc12,skc17).
% 1.90/2.13  0 [] -ssSkC0|street(skc12,skc17).
% 1.90/2.13  0 [] -ssSkC0|barrel(skc12,skc13).
% 1.90/2.13  0 [] -ssSkC0|present(skc12,skc13).
% 1.90/2.13  0 [] -ssSkC0|event(skc12,skc13).
% 1.90/2.13  0 [] -ssSkC0|hollywood_placename(skc12,skc15).
% 1.90/2.13  0 [] -ssSkC0|placename(skc12,skc15).
% 1.90/2.13  0 [] -ssSkC0|city(skc12,skc16).
% 1.90/2.13  0 [] -ssSkC0|chevy(skc12,skc14).
% 1.90/2.13  0 [] -ssSkC0|white(skc12,skc14).
% 1.90/2.13  0 [] -ssSkC0|dirty(skc12,skc14).
% 1.90/2.13  0 [] -ssSkC0|old(skc12,skc14).
% 1.90/2.13  0 [] ssSkC0|agent(skc18,skc19,skc23).
% 1.90/2.13  0 [] ssSkC0|in(skc18,skc19,skc22).
% 1.90/2.13  0 [] ssSkC0|of(skc18,skc21,skc22).
% 1.90/2.13  0 [] ssSkC0|down(skc18,skc19,skc20).
% 1.90/2.13  0 [] -ssSkC0|down(skc12,skc13,skc17).
% 1.90/2.13  0 [] -ssSkC0|in(skc12,skc13,skc16).
% 1.90/2.13  0 [] -ssSkC0|of(skc12,skc15,skc16).
% 1.90/2.13  0 [] -ssSkC0|agent(skc12,skc13,skc14).
% 1.90/2.13  0 [] -down(U,V,W)| -lonely(U,W)| -street(U,W)| -barrel(U,V)| -present(U,V)| -event(U,V)| -hollywood_placename(U,X)| -placename(U,X)| -in(U,V,Y)| -city(U,Y)| -of(U,X,Y)| -chevy(U,Z)| -white(U,Z)| -dirty(U,Z)| -old(U,Z)| -agent(U,V,Z)| -actual_world(U)|ssSkC0.
% 1.90/2.13  0 [] -agent(U,V,W)| -old(U,W)| -dirty(U,W)| -white(U,W)| -chevy(U,W)| -barrel(U,V)| -present(U,V)| -event(U,V)| -hollywood_placename(U,X)| -placename(U,X)| -in(U,V,Y)| -city(U,Y)| -of(U,X,Y)| -street(U,Z)| -lonely(U,Z)| -down(U,V,Z)| -actual_world(U)| -ssSkC0.
% 1.90/2.13  end_of_list.
% 1.90/2.13
% 1.90/2.13  SCAN INPUT: prop=0, horn=0, equality=0, symmetry=0, max_lits=18.
% 1.90/2.13
% 1.90/2.13  This is a non-Horn set without equality.  The strategy will
% 1.90/2.13  be ordered hyper_res, unit deletion, and factoring, with
% 1.90/2.13  satellites in sos and with nuclei in usable.
% 1.90/2.13
% 1.90/2.13     dependent: set(hyper_res).
% 1.90/2.13     dependent: set(factor).
% 1.90/2.13     dependent: set(unit_deletion).
% 1.90/2.13
% 1.90/2.13  ------------> process usable:
% 1.90/2.13  ** KEPT (pick-wt=4): 1 [] -ssSkC0|lonely(skc12,skc17).
% 1.90/2.13  ** KEPT (pick-wt=4): 2 [] -ssSkC0|street(skc12,skc17).
% 1.90/2.13  ** KEPT (pick-wt=4): 3 [] -ssSkC0|barrel(skc12,skc13).
% 1.90/2.13  ** KEPT (pick-wt=4): 4 [] -ssSkC0|present(skc12,skc13).
% 1.90/2.13  ** KEPT (pick-wt=4): 5 [] -ssSkC0|event(skc12,skc13).
% 1.90/2.13  ** KEPT (pick-wt=4): 6 [] -ssSkC0|hollywood_placename(skc12,skc15).
% 1.90/2.13  ** KEPT (pick-wt=4): 7 [] -ssSkC0|placename(skc12,skc15).
% 1.90/2.13  ** KEPT (pick-wt=4): 8 [] -ssSkC0|city(skc12,skc16).
% 1.90/2.13  ** KEPT (pick-wt=4): 9 [] -ssSkC0|chevy(skc12,skc14).
% 1.90/2.13  ** KEPT (pick-wt=4): 10 [] -ssSkC0|white(skc12,skc14).
% 1.90/2.13  ** KEPT (pick-wt=4): 11 [] -ssSkC0|dirty(skc12,skc14).
% 1.90/2.13  ** KEPT (pick-wt=4): 12 [] -ssSkC0|old(skc12,skc14).
% 1.90/2.13  ** KEPT (pick-wt=5): 13 [] -ssSkC0|down(skc12,skc13,skc17).
% 1.90/2.13  ** KEPT (pick-wt=5): 14 [] -ssSkC0|in(skc12,skc13,skc16).
% 1.90/2.13  ** KEPT (pick-wt=5): 15 [] -ssSkC0|of(skc12,skc15,skc16).
% 1.90/2.13  ** KEPT (pick-wt=5): 16 [] -ssSkC0|agent(skc12,skc13,skc14).
% 1.90/2.13  ** KEPT (pick-wt=55): 17 [] -down(A,B,C)| -lonely(A,C)| -street(A,C)| -barrel(A,B)| -present(A,B)| -event(A,B)| -hollywood_placename(A,D)| -placename(A,D)| -in(A,B,E)| -city(A,E)| -of(A,D,E)| -chevy(A,F)| -white(A,F)| -dirty(A,F)| -old(A,F)| -agent(A,B,F)| -actual_world(A)|ssSkC0.
% 1.90/2.13  ** KEPT (pick-wt=55): 18 [] -agent(A,B,C)| -old(A,C)| -dirty(A,C)| -white(A,C)| -chevy(A,C)| -barrel(A,B)| -present(A,B)| -event(A,B)| -hollywood_placename(A,D)| -placename(A,D)| -in(A,B,E)| -city(A,E)| -of(A,D,E)| -street(A,F)| -lonely(A,F)| -down(A,B,F)| -actual_world(A)| -ssSkC0.
% 1.90/2.13
% 1.90/2.13  ------------> process sos:
% 1.90/2.13  ** KEPT (pick-wt=2): 19 [] actual_world(skc18).
% 1.90/2.13  ** KEPT (pick-wt=2): 20 [] actual_world(skc12).
% 1.90/2.13  ** KEPT (pick-wt=4): 21 [] ssSkC0|old(skc18,skc23).
% 1.90/2.13  ** KEPT (pick-wt=4): 22 [] ssSkC0|dirty(skc18,skc23).
% 1.90/2.13  ** KEPT (pick-wt=4): 23 [] ssSkC0|white(skc18,skc23).
% 1.90/2.13  ** KEPT (pick-wt=4): 24 [] ssSkC0|chevy(skc18,skc23).
% 1.90/2.13  ** KEPT (pick-wt=4): 25 [] ssSkC0|barrel(skc18,skc19).
% 1.90/2.13  ** KEPT (pick-wt=4): 26 [] ssSkC0|present(skc18,skc19).
% 1.90/2.13  ** KEPT (pick-wt=4): 27 [] ssSkC0|event(skc18,skc19).
% 1.90/2.13  ** KEPT (pick-wt=4): 28 [] ssSkC0|hollywood_placename(skc18,skc21).
% 1.90/2.13  ** KEPT (pick-wt=4): 29 [] ssSkC0|placename(skc18,skc21).
% 1.90/2.13  ** KEPT (pick-wt=4): 30 [] ssSkC0|city(skc18,skc22).
% 1.90/2.13  ** KEPT (pick-wt=4): 31 [] ssSkC0|street(skc18,skc20).
% 1.90/2.13  ** KEPT (pick-wt=4): 32 [] ssSkC0|lonely(skc18,skc20).
% 1.90/2.13  ** KEPT (pick-wt=5): 33 [] ssSkC0|agent(skc18,skc19,skc23).
% 1.90/2.13  ** KEPT (pick-wt=5): 34 [] ssSkC0|in(skc18,skc19,skc22).
% 1.90/2.13  ** KEPT (pick-wt=5): 35 [] ssSkC0|of(skc18,skc21,skc22).
% 1.90/2.13  ** KEPT (pick-wt=5): 36 [] ssSkC0|down(skc18,skc19,skc20).
% 1.90/2.13
% 1.90/2.13  ======= end of input processing =======
% 1.90/2.13
% 1.90/2.13  =========== start of search ===========
% 1.90/2.13
% 1.90/2.13  -------- PROOF --------
% 1.90/2.13
% 1.90/2.13  -----> EMPTY CLAUSE at   0.00 sec ----> 54 [hyper,41,18,38,42,43,44,45,51,50,49,48,47,40,46,39,52,53,20,37] \$F.
% 1.90/2.13
% 1.90/2.13  Length of proof is 17.  Level of proof is 2.
% 1.90/2.13
% 1.90/2.13  ---------------- PROOF ----------------
% 1.90/2.13  % SZS status Unsatisfiable
% 1.90/2.13  % SZS output start Refutation
% See solution above
% 1.90/2.14  ------------ end of proof -------------
% 1.90/2.14
% 1.90/2.14
% 1.90/2.14  Search stopped by max_proofs option.
% 1.90/2.14
% 1.90/2.14
% 1.90/2.14  Search stopped by max_proofs option.
% 1.90/2.14
% 1.90/2.14  ============ end of search ============
% 1.90/2.14
% 1.90/2.14  -------------- statistics -------------
% 1.90/2.14  clauses given                 35
% 1.90/2.14  clauses generated             18
% 1.90/2.14  clauses kept                  53
% 1.90/2.14  clauses forward subsumed       0
% 1.90/2.14  clauses back subsumed         33
% 1.90/2.14  Kbytes malloced              976
% 1.90/2.14
% 1.90/2.14  ----------- times (seconds) -----------
% 1.90/2.14  user CPU time          0.00          (0 hr, 0 min, 0 sec)
% 1.90/2.14  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 1.90/2.14  wall-clock time        1             (0 hr, 0 min, 1 sec)
% 1.90/2.14
% 1.90/2.14  That finishes the proof of the theorem.
% 1.90/2.14
% 1.90/2.14  Process 27404 finished Wed Jul 27 08:56:03 2022
% 1.90/2.14  Otter interrupted
% 1.90/2.14  PROOF FOUND
%------------------------------------------------------------------------------
```