%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SET256-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n015.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Tue Sep 29 12:40:37 PM UTC 2026
% Result : Unsatisfiable 0.14s 1.70s
% Output : Refutation 0.14s
% Verified :
% SZS Type : Refutation
% Derivation depth : 10
% Number of leaves : 15
% Syntax : Number of formulae : 35 ( 19 unt; 0 def)
% Number of atoms : 55 ( 7 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 43 ( 23 ~; 20 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 8 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 13 ( 13 usr; 4 con; 0-3 aty)
% Number of variables : 58 ( 58 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X0,X1] :
( ~ member(X2,X0)
| ~ subclass(X0,X1)
| member(X2,X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',subclass_members) ).
fof(f2,axiom,
! [X0,X1] :
( member(not_subclass_element(X0,X1),X0)
| subclass(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',not_subclass_members1) ).
fof(f3,axiom,
! [X0,X1] :
( ~ member(not_subclass_element(X0,X1),X1)
| subclass(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',not_subclass_members2) ).
fof(f12,axiom,
! [X0] : unordered_pair(X0,X0) = singleton(X0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',singleton_set) ).
fof(f13,axiom,
! [X0,X1] : unordered_pair(singleton(X0),unordered_pair(X0,singleton(X1))) = ordered_pair(X0,X1),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',ordered_pair) ).
fof(f14,axiom,
! [X2,X3,X0,X1] :
( ~ member(ordered_pair(X0,X1),cross_product(X2,X3))
| member(X0,X2) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cartesian_product1) ).
fof(f15,axiom,
! [X2,X3,X0,X1] :
( ~ member(ordered_pair(X0,X1),cross_product(X2,X3))
| member(X1,X3) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cartesian_product2) ).
fof(f16,axiom,
! [X2,X3,X0,X1] :
( ~ member(X0,X1)
| ~ member(X2,X3)
| member(ordered_pair(X0,X2),cross_product(X1,X3)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cartesian_product3) ).
fof(f17,axiom,
! [X2,X0,X1] :
( ~ member(X0,cross_product(X1,X2))
| ordered_pair(first(X0),second(X0)) = X0 ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cartesian_product4) ).
fof(f21,axiom,
! [X2,X0,X1] :
( ~ member(X0,intersection(X1,X2))
| member(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',intersection1) ).
fof(f22,axiom,
! [X2,X0,X1] :
( ~ member(X0,intersection(X1,X2))
| member(X0,X2) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',intersection2) ).
fof(f23,axiom,
! [X2,X0,X1] :
( member(X0,intersection(X1,X2))
| ~ member(X0,X2)
| ~ member(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',intersection3) ).
fof(f28,axiom,
! [X2,X0,X1] : intersection(X0,cross_product(X1,X2)) = restrict(X0,X1,X2),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',restriction1) ).
fof(f122,negated_conjecture,
subclass(z1,z2),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_monotonicity_of_restriction3_1) ).
fof(f123,negated_conjecture,
~ subclass(restrict(x,y,z1),restrict(x,y,z2)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_monotonicity_of_restriction3_2) ).
fof(f128,plain,
! [X0,X1] : ordered_pair(X0,X1) = unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X1,X1))),
inference(definition_unfolding,[],[f13,f12,f12]) ).
fof(f137,plain,
! [X2,X3,X0,X1] :
( ~ member(unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X1,X1))),cross_product(X2,X3))
| member(X0,X2) ),
inference(definition_unfolding,[],[f14,f128]) ).
fof(f138,plain,
! [X2,X3,X0,X1] :
( ~ member(unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X1,X1))),cross_product(X2,X3))
| member(X1,X3) ),
inference(definition_unfolding,[],[f15,f128]) ).
fof(f139,plain,
! [X2,X3,X0,X1] :
( member(unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X2,X2))),cross_product(X1,X3))
| ~ member(X2,X3)
| ~ member(X0,X1) ),
inference(definition_unfolding,[],[f16,f128]) ).
fof(f140,plain,
! [X2,X0,X1] :
( ~ member(X0,cross_product(X1,X2))
| unordered_pair(unordered_pair(first(X0),first(X0)),unordered_pair(first(X0),unordered_pair(second(X0),second(X0)))) = X0 ),
inference(definition_unfolding,[],[f17,f128]) ).
fof(f186,plain,
~ subclass(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),
inference(definition_unfolding,[],[f123,f28,f28]) ).
fof(f191,plain,
member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),intersection(x,cross_product(y,z1))),
inference(unit_resulting_resolution,[],[f2,f186]) ).
fof(f192,plain,
~ member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),intersection(x,cross_product(y,z2))),
inference(unit_resulting_resolution,[],[f3,f186]) ).
fof(f193,plain,
member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),cross_product(y,z1)),
inference(unit_resulting_resolution,[],[f22,f191]) ).
fof(f194,plain,
member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),x),
inference(unit_resulting_resolution,[],[f21,f191]) ).
fof(f205,plain,
~ member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),cross_product(y,z2)),
inference(unit_resulting_resolution,[],[f23,f194,f192]) ).
fof(f212,plain,
not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))) = unordered_pair(unordered_pair(first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))))),unordered_pair(first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),unordered_pair(second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))))))),
inference(unit_resulting_resolution,[],[f140,f193]) ).
fof(f229,plain,
! [X0,X1] :
( ~ member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),cross_product(X0,X1))
| member(second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),X1) ),
inference(superposition,[],[f138,f212]) ).
fof(f230,plain,
! [X0,X1] :
( ~ member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),cross_product(X0,X1))
| member(first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),X0) ),
inference(superposition,[],[f137,f212]) ).
fof(f231,plain,
member(first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),y),
inference(unit_resulting_resolution,[],[f230,f193]) ).
fof(f242,plain,
member(second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),z1),
inference(unit_resulting_resolution,[],[f229,f193]) ).
fof(f255,plain,
member(second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),z2),
inference(unit_resulting_resolution,[],[f1,f122,f242]) ).
fof(f266,plain,
member(unordered_pair(unordered_pair(first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))))),unordered_pair(first(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),unordered_pair(second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2)))),second(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))))))),cross_product(y,z2)),
inference(unit_resulting_resolution,[],[f139,f231,f255]) ).
fof(f273,plain,
member(not_subclass_element(intersection(x,cross_product(y,z1)),intersection(x,cross_product(y,z2))),cross_product(y,z2)),
inference(forward_demodulation,[],[f266,f212]) ).
fof(f274,plain,
$false,
inference(forward_subsumption_resolution,[],[f273,f205]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SET256-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.09/0.35 % Computer : n015.cluster.edu
% 0.09/0.35 % Model : x86_64 x86_64
% 0.09/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.35 % Memory : 8046.5625MB
% 0.09/0.35 % OS : Linux 6.8.0-71-generic
% 0.09/0.35 % CPULimit : 300
% 0.09/0.35 % WCLimit : 300
% 0.09/0.35 % DateTime : Mon Sep 28 01:17:01 UTC 2026
% 0.09/0.35 % CPUTime :
% 0.09/0.35 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.12/0.39 Running first-order theorem proving
% 0.12/0.39 Running: /export/starexec/sandbox2/solver/bin/vampire --input_syntax tptp --output_axiom_names on --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 3.22/1.51 % (2178489)Input is clausal, will run a generic CNF schedule.
% 3.22/1.51 % (2178495)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:npcc=on:urr=on:br=off:random_seed=757760326:i=132376:av=off_2999 on theBenchmark for (2999ds/132376Mi)
% 3.22/1.51 % (2178496)lrs+1002_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=ground:npcc=on:sp=reverse_frequency:spb=intro:random_seed=3895399631:i=137899:s2at=10:gtgl=3:kws=precedence:add=on:bd=preordered:gtg=position_2999 on theBenchmark for (2999ds/137899Mi)
% 3.22/1.51 % (2178499)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=591095578:s2a=on:i=180:gtg=position_2999 on theBenchmark for (2999ds/180Mi)
% 3.22/1.51 % (2178494)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=full:npcc=on:drc=off:sp=weighted_frequency:spb=goal:fd=preordered:foolp=on:random_seed=2338708381:i=140167_2999 on theBenchmark for (2999ds/140167Mi)
% 3.22/1.51 % (2178498)dis-1002_1_to=lpo:sil=16000:fd=off:random_seed=3075152867:st=1.5:i=114:aac=none:ins=7:ss=axioms:fsd=on_2999 on theBenchmark for (2999ds/114Mi)
% 3.22/1.51 % (2178497)lrs+10_1_sil=8000:sp=occurrence:random_seed=444930974:i=107:sd=3:ss=axioms:sgt=8_2999 on theBenchmark for (2999ds/107Mi)
% 3.22/1.51 % (2178497)Refutation not found, incomplete strategy
% 3.22/1.51 % (2178497)------------------------------
% 3.22/1.51 % (2178497)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.22/1.51 % (2178497)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.22/1.51 % (2178497)CaDiCaL version: 2.1.3
% 3.22/1.51 % (2178497)Termination reason: Refutation not found, incomplete strategy
% 3.22/1.51 % (2178497)Time elapsed: 0.003 s
% 3.22/1.51 % (2178497)Peak memory usage: 88 MB
% 3.22/1.51 % (2178497)Instructions burned: 2 (million)
% 3.22/1.51 % (2178500)dis-21_1_sil=8000:lcm=predicate:random_seed=2237420205:st=5:avsq=on:i=117:avsqr=1,16:sd=3:aac=none:ep=RS:fsr=off:ss=included_2999 on theBenchmark for (2999ds/117Mi)
% 3.22/1.51 % (2178498)Instruction limit reached!
% 3.22/1.51 % (2178498)------------------------------
% 3.22/1.51 % (2178498)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.22/1.51 % (2178498)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.22/1.51 % (2178498)CaDiCaL version: 2.1.3
% 3.22/1.51 % (2178498)Termination reason: Instruction limit
% 3.22/1.51 % (2178498)Termination phase: Saturation
% 3.22/1.51 % (2178498)Time elapsed: 0.067 s
% 3.22/1.51 % (2178498)Peak memory usage: 89 MB
% 3.22/1.51 % (2178498)Instructions burned: 115 (million)
% 3.22/1.51 % (2178500)Instruction limit reached!
% 3.22/1.51 % (2178500)------------------------------
% 3.22/1.51 % (2178500)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.22/1.51 % (2178500)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.22/1.51 % (2178500)CaDiCaL version: 2.1.3
% 3.22/1.51 % (2178500)Termination reason: Instruction limit
% 3.22/1.51 % (2178500)Termination phase: Saturation
% 3.22/1.51 % (2178500)Time elapsed: 0.070 s
% 3.22/1.51 % (2178500)Peak memory usage: 90 MB
% 3.22/1.51 % (2178500)Instructions burned: 117 (million)
% 3.22/1.51 % (2178499)Instruction limit reached!
% 3.22/1.51 % (2178499)------------------------------
% 3.22/1.51 % (2178499)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.22/1.51 % (2178499)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.22/1.51 % (2178499)CaDiCaL version: 2.1.3
% 3.22/1.51 % (2178499)Termination reason: Instruction limit
% 3.22/1.51 % (2178499)Termination phase: Saturation
% 3.22/1.51 % (2178499)Time elapsed: 0.143 s
% 3.22/1.51 % (2178499)Peak memory usage: 90 MB
% 3.22/1.51 % (2178499)Instructions burned: 180 (million)
% 3.22/1.51 % (2178508)dis+1010_3_sil=8000:plsq=on:drc=off:fde=none:plsqc=1:bsd=on:plsqr=7,2:sos=on:spb=goal_then_units:random_seed=3551428953:i=143:sd=2:aac=none:ss=axioms:sgt=16_2997 on theBenchmark for (2997ds/143Mi)
% 3.22/1.51 % (2178508)Refutation not found, incomplete strategy
% 3.22/1.51 % (2178508)------------------------------
% 3.22/1.51 % (2178508)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.22/1.51 % (2178508)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.22/1.51 % (2178508)CaDiCaL version: 2.1.3
% 3.22/1.51 % (2178508)Termination reason: Refutation not found, incomplete strategy
% 3.22/1.51 % (2178508)Time elapsed: 0.003 s
% 3.22/1.51 % (2178508)Peak memory usage: 88 MB
% 3.22/1.51 % (2178508)Instructions burned: 2 (million)
% 3.22/1.51 % (2178509)ott-1010_1_to=lpo:sil=16000:sos=on:spb=units:urr=on:bce=on:br=off:random_seed=2804633255:st=3:avsq=on:s2a=on:i=189:s2at=1.2:avsqr=1,16:sd=2:bd=all:nm=64:ss=axioms:sgt=30_2997 on theBenchmark for (2997ds/189Mi)
% 0.14/1.70 % (2178497)------------------------------
% 0.14/1.70 % (2178497)------------------------------
% 0.14/1.70 % (2178510)lrs-1002_1_to=lpo:sil=8000:fde=none:sos=on:random_seed=1169455695:st=4:i=219:sd=3:ss=axioms_2997 on theBenchmark for (2997ds/219Mi)
% 0.14/1.70 % (2178510)Refutation not found, incomplete strategy
% 0.14/1.70 % (2178510)------------------------------
% 0.14/1.70 % (2178510)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 0.14/1.70 % (2178510)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.14/1.70 % (2178510)CaDiCaL version: 2.1.3
% 0.14/1.70 % (2178510)Termination reason: Refutation not found, incomplete strategy
% 0.14/1.70 % (2178510)Time elapsed: 0.003 s
% 0.14/1.70 % (2178510)Peak memory usage: 88 MB
% 0.14/1.70 % (2178510)Instructions burned: 3 (million)
% 0.14/1.70 % (2178509)Instruction limit reached!
% 0.14/1.70 % (2178509)------------------------------
% 0.14/1.70 % (2178509)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 0.14/1.70 % (2178509)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.14/1.70 % (2178509)CaDiCaL version: 2.1.3
% 0.14/1.70 % (2178509)Termination reason: Instruction limit
% 0.14/1.70 % (2178509)Termination phase: Saturation
% 0.14/1.70 % (2178509)Time elapsed: 0.108 s
% 0.14/1.70 % (2178509)Peak memory usage: 91 MB
% 0.14/1.70 % (2178509)Instructions burned: 189 (million)
% 0.14/1.70 % (2178495)First to succeed.
% 0.14/1.70 % (2178495)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-2178489"
% 0.14/1.70 % (2178513)lrs+10_64_to=lpo:sil=8000:random_seed=472797357:i=126:bd=preordered_2995 on theBenchmark for (2995ds/126Mi)
% 0.14/1.70 % (2178508)------------------------------
% 0.14/1.70 % (2178508)------------------------------
% 0.14/1.70 % (2178515)lrs+1011_16_to=lpo:sil=8000:drc=off:sp=reverse_frequency:spb=goal_then_units:random_seed=3936936486:avsq=on:i=194:fgj=on:bd=preordered_2995 on theBenchmark for (2995ds/194Mi)
% 0.14/1.70 % (2178513)Instruction limit reached!
% 0.14/1.70 % (2178513)------------------------------
% 0.14/1.70 % (2178513)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 0.14/1.70 % (2178513)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.14/1.70 % (2178513)CaDiCaL version: 2.1.3
% 0.14/1.70 % (2178513)Termination reason: Instruction limit
% 0.14/1.70 % (2178513)Termination phase: Saturation
% 0.14/1.70 % (2178513)Time elapsed: 0.080 s
% 0.14/1.70 % (2178513)Peak memory usage: 90 MB
% 0.14/1.70 % (2178513)Instructions burned: 127 (million)
% 0.14/1.70 % (2178495)Refutation found. Thanks to Tanya!
% 0.14/1.70 % SZS status Unsatisfiable for theBenchmark
% 0.14/1.70 % SZS output start Proof for theBenchmark
% See solution above
% 0.14/1.70 % (2178495)------------------------------
% 0.14/1.70 % (2178495)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 0.14/1.70 % (2178495)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.14/1.70 % (2178495)CaDiCaL version: 2.1.3
% 0.14/1.70 % (2178495)Termination reason: Refutation
% 0.14/1.70 % (2178495)Time elapsed: 0.410 s
% 0.14/1.70 % (2178495)Peak memory usage: 130 MB
% 0.14/1.70 % (2178495)Instructions burned: 987 (million)
% 0.14/1.70 % (2178495)------------------------------
% 0.14/1.70 % (2178495)------------------------------
% 0.14/1.70 % (2178489)Success in time 0.677 s
% 0.14/1.70 % Vampire exiting
%------------------------------------------------------------------------------