TSTP Solution File: SEU304+1 by Vampire---4.8
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%------------------------------------------------------------------------------
% File : Vampire---4.8
% Problem : SEU304+1 : TPTP v8.1.2. Released v3.3.0.
% Transfm : none
% Format : tptp:raw
% Command : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule file --schedule_file /export/starexec/sandbox/solver/bin/quickGreedyProduceRating_steal_pow3.txt --cores 8 -m 12000 -t %d %s
% Computer : n025.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 : Sun May 5 09:22:06 EDT 2024
% Result : Theorem 0.61s 0.77s
% Output : Refutation 0.61s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 7
% Syntax : Number of formulae : 50 ( 17 unt; 0 def)
% Number of atoms : 191 ( 21 equ)
% Maximal formula atoms : 7 ( 3 avg)
% Number of connectives : 221 ( 80 ~; 86 |; 33 &)
% ( 6 <=>; 16 =>; 0 <=; 0 <~>)
% Maximal formula depth : 10 ( 5 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 10 ( 8 usr; 1 prp; 0-3 aty)
% Number of functors : 7 ( 7 usr; 3 con; 0-3 aty)
% Number of variables : 76 ( 70 !; 6 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f323,plain,
$false,
inference(subsumption_resolution,[],[f322,f87]) ).
fof(f87,plain,
~ below(sK0,meet_commut(sK0,sK1,sK2),sK1),
inference(cnf_transformation,[],[f54]) ).
fof(f54,plain,
? [X0] :
( ? [X1] :
( ? [X2] :
( ~ below(X0,meet_commut(X0,X1,X2),X1)
& element(X2,the_carrier(X0)) )
& element(X1,the_carrier(X0)) )
& latt_str(X0)
& meet_absorbing(X0)
& meet_commutative(X0)
& ~ empty_carrier(X0) ),
inference(flattening,[],[f53]) ).
fof(f53,plain,
? [X0] :
( ? [X1] :
( ? [X2] :
( ~ below(X0,meet_commut(X0,X1,X2),X1)
& element(X2,the_carrier(X0)) )
& element(X1,the_carrier(X0)) )
& latt_str(X0)
& meet_absorbing(X0)
& meet_commutative(X0)
& ~ empty_carrier(X0) ),
inference(ennf_transformation,[],[f44]) ).
fof(f44,negated_conjecture,
~ ! [X0] :
( ( latt_str(X0)
& meet_absorbing(X0)
& meet_commutative(X0)
& ~ empty_carrier(X0) )
=> ! [X1] :
( element(X1,the_carrier(X0))
=> ! [X2] :
( element(X2,the_carrier(X0))
=> below(X0,meet_commut(X0,X1,X2),X1) ) ) ),
inference(negated_conjecture,[],[f43]) ).
fof(f43,conjecture,
! [X0] :
( ( latt_str(X0)
& meet_absorbing(X0)
& meet_commutative(X0)
& ~ empty_carrier(X0) )
=> ! [X1] :
( element(X1,the_carrier(X0))
=> ! [X2] :
( element(X2,the_carrier(X0))
=> below(X0,meet_commut(X0,X1,X2),X1) ) ) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',t23_lattices) ).
fof(f322,plain,
below(sK0,meet_commut(sK0,sK1,sK2),sK1),
inference(forward_demodulation,[],[f321,f233]) ).
fof(f233,plain,
meet_commut(sK0,sK1,sK2) = meet(sK0,sK2,sK1),
inference(forward_demodulation,[],[f194,f206]) ).
fof(f206,plain,
meet_commut(sK0,sK1,sK2) = meet_commut(sK0,sK2,sK1),
inference(unit_resulting_resolution,[],[f90,f89,f133,f86,f88,f95]) ).
fof(f95,plain,
! [X2,X0,X1] :
( ~ element(X2,the_carrier(X0))
| ~ meet_commutative(X0)
| ~ meet_semilatt_str(X0)
| ~ element(X1,the_carrier(X0))
| empty_carrier(X0)
| meet_commut(X0,X1,X2) = meet_commut(X0,X2,X1) ),
inference(cnf_transformation,[],[f60]) ).
fof(f60,plain,
! [X0,X1,X2] :
( meet_commut(X0,X1,X2) = meet_commut(X0,X2,X1)
| ~ element(X2,the_carrier(X0))
| ~ element(X1,the_carrier(X0))
| ~ meet_semilatt_str(X0)
| ~ meet_commutative(X0)
| empty_carrier(X0) ),
inference(flattening,[],[f59]) ).
fof(f59,plain,
! [X0,X1,X2] :
( meet_commut(X0,X1,X2) = meet_commut(X0,X2,X1)
| ~ element(X2,the_carrier(X0))
| ~ element(X1,the_carrier(X0))
| ~ meet_semilatt_str(X0)
| ~ meet_commutative(X0)
| empty_carrier(X0) ),
inference(ennf_transformation,[],[f4]) ).
fof(f4,axiom,
! [X0,X1,X2] :
( ( element(X2,the_carrier(X0))
& element(X1,the_carrier(X0))
& meet_semilatt_str(X0)
& meet_commutative(X0)
& ~ empty_carrier(X0) )
=> meet_commut(X0,X1,X2) = meet_commut(X0,X2,X1) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',commutativity_k4_lattices) ).
fof(f88,plain,
element(sK1,the_carrier(sK0)),
inference(cnf_transformation,[],[f54]) ).
fof(f86,plain,
element(sK2,the_carrier(sK0)),
inference(cnf_transformation,[],[f54]) ).
fof(f133,plain,
meet_semilatt_str(sK0),
inference(unit_resulting_resolution,[],[f92,f100]) ).
fof(f100,plain,
! [X0] :
( ~ latt_str(X0)
| meet_semilatt_str(X0) ),
inference(cnf_transformation,[],[f63]) ).
fof(f63,plain,
! [X0] :
( ( join_semilatt_str(X0)
& meet_semilatt_str(X0) )
| ~ latt_str(X0) ),
inference(ennf_transformation,[],[f20]) ).
fof(f20,axiom,
! [X0] :
( latt_str(X0)
=> ( join_semilatt_str(X0)
& meet_semilatt_str(X0) ) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',dt_l3_lattices) ).
fof(f92,plain,
latt_str(sK0),
inference(cnf_transformation,[],[f54]) ).
fof(f89,plain,
~ empty_carrier(sK0),
inference(cnf_transformation,[],[f54]) ).
fof(f90,plain,
meet_commutative(sK0),
inference(cnf_transformation,[],[f54]) ).
fof(f194,plain,
meet_commut(sK0,sK2,sK1) = meet(sK0,sK2,sK1),
inference(unit_resulting_resolution,[],[f90,f89,f133,f86,f88,f93]) ).
fof(f93,plain,
! [X2,X0,X1] :
( ~ element(X2,the_carrier(X0))
| ~ meet_commutative(X0)
| ~ meet_semilatt_str(X0)
| ~ element(X1,the_carrier(X0))
| empty_carrier(X0)
| meet_commut(X0,X1,X2) = meet(X0,X1,X2) ),
inference(cnf_transformation,[],[f56]) ).
fof(f56,plain,
! [X0,X1,X2] :
( meet_commut(X0,X1,X2) = meet(X0,X1,X2)
| ~ element(X2,the_carrier(X0))
| ~ element(X1,the_carrier(X0))
| ~ meet_semilatt_str(X0)
| ~ meet_commutative(X0)
| empty_carrier(X0) ),
inference(flattening,[],[f55]) ).
fof(f55,plain,
! [X0,X1,X2] :
( meet_commut(X0,X1,X2) = meet(X0,X1,X2)
| ~ element(X2,the_carrier(X0))
| ~ element(X1,the_carrier(X0))
| ~ meet_semilatt_str(X0)
| ~ meet_commutative(X0)
| empty_carrier(X0) ),
inference(ennf_transformation,[],[f39]) ).
fof(f39,axiom,
! [X0,X1,X2] :
( ( element(X2,the_carrier(X0))
& element(X1,the_carrier(X0))
& meet_semilatt_str(X0)
& meet_commutative(X0)
& ~ empty_carrier(X0) )
=> meet_commut(X0,X1,X2) = meet(X0,X1,X2) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',redefinition_k4_lattices) ).
fof(f321,plain,
below(sK0,meet(sK0,sK2,sK1),sK1),
inference(subsumption_resolution,[],[f320,f89]) ).
fof(f320,plain,
( empty_carrier(sK0)
| below(sK0,meet(sK0,sK2,sK1),sK1) ),
inference(subsumption_resolution,[],[f319,f88]) ).
fof(f319,plain,
( ~ element(sK1,the_carrier(sK0))
| empty_carrier(sK0)
| below(sK0,meet(sK0,sK2,sK1),sK1) ),
inference(subsumption_resolution,[],[f318,f218]) ).
fof(f218,plain,
element(meet(sK0,sK2,sK1),the_carrier(sK0)),
inference(unit_resulting_resolution,[],[f89,f133,f86,f88,f107]) ).
fof(f107,plain,
! [X2,X0,X1] :
( element(meet(X0,X1,X2),the_carrier(X0))
| ~ meet_semilatt_str(X0)
| ~ element(X1,the_carrier(X0))
| ~ element(X2,the_carrier(X0))
| empty_carrier(X0) ),
inference(cnf_transformation,[],[f68]) ).
fof(f68,plain,
! [X0,X1,X2] :
( element(meet(X0,X1,X2),the_carrier(X0))
| ~ element(X2,the_carrier(X0))
| ~ element(X1,the_carrier(X0))
| ~ meet_semilatt_str(X0)
| empty_carrier(X0) ),
inference(flattening,[],[f67]) ).
fof(f67,plain,
! [X0,X1,X2] :
( element(meet(X0,X1,X2),the_carrier(X0))
| ~ element(X2,the_carrier(X0))
| ~ element(X1,the_carrier(X0))
| ~ meet_semilatt_str(X0)
| empty_carrier(X0) ),
inference(ennf_transformation,[],[f14]) ).
fof(f14,axiom,
! [X0,X1,X2] :
( ( element(X2,the_carrier(X0))
& element(X1,the_carrier(X0))
& meet_semilatt_str(X0)
& ~ empty_carrier(X0) )
=> element(meet(X0,X1,X2),the_carrier(X0)) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',dt_k2_lattices) ).
fof(f318,plain,
( ~ element(meet(sK0,sK2,sK1),the_carrier(sK0))
| ~ element(sK1,the_carrier(sK0))
| empty_carrier(sK0)
| below(sK0,meet(sK0,sK2,sK1),sK1) ),
inference(subsumption_resolution,[],[f317,f134]) ).
fof(f134,plain,
join_semilatt_str(sK0),
inference(unit_resulting_resolution,[],[f92,f101]) ).
fof(f101,plain,
! [X0] :
( ~ latt_str(X0)
| join_semilatt_str(X0) ),
inference(cnf_transformation,[],[f63]) ).
fof(f317,plain,
( ~ join_semilatt_str(sK0)
| ~ element(meet(sK0,sK2,sK1),the_carrier(sK0))
| ~ element(sK1,the_carrier(sK0))
| empty_carrier(sK0)
| below(sK0,meet(sK0,sK2,sK1),sK1) ),
inference(trivial_inequality_removal,[],[f316]) ).
fof(f316,plain,
( sK1 != sK1
| ~ join_semilatt_str(sK0)
| ~ element(meet(sK0,sK2,sK1),the_carrier(sK0))
| ~ element(sK1,the_carrier(sK0))
| empty_carrier(sK0)
| below(sK0,meet(sK0,sK2,sK1),sK1) ),
inference(superposition,[],[f97,f212]) ).
fof(f212,plain,
sK1 = join(sK0,meet(sK0,sK2,sK1),sK1),
inference(unit_resulting_resolution,[],[f91,f92,f89,f86,f88,f104]) ).
fof(f104,plain,
! [X2,X0,X1] :
( ~ element(X2,the_carrier(X0))
| ~ latt_str(X0)
| ~ element(X1,the_carrier(X0))
| empty_carrier(X0)
| join(X0,meet(X0,X1,X2),X2) = X2
| ~ meet_absorbing(X0) ),
inference(cnf_transformation,[],[f65]) ).
fof(f65,plain,
! [X0] :
( ( meet_absorbing(X0)
<=> ! [X1] :
( ! [X2] :
( join(X0,meet(X0,X1,X2),X2) = X2
| ~ element(X2,the_carrier(X0)) )
| ~ element(X1,the_carrier(X0)) ) )
| ~ latt_str(X0)
| empty_carrier(X0) ),
inference(flattening,[],[f64]) ).
fof(f64,plain,
! [X0] :
( ( meet_absorbing(X0)
<=> ! [X1] :
( ! [X2] :
( join(X0,meet(X0,X1,X2),X2) = X2
| ~ element(X2,the_carrier(X0)) )
| ~ element(X1,the_carrier(X0)) ) )
| ~ latt_str(X0)
| empty_carrier(X0) ),
inference(ennf_transformation,[],[f8]) ).
fof(f8,axiom,
! [X0] :
( ( latt_str(X0)
& ~ empty_carrier(X0) )
=> ( meet_absorbing(X0)
<=> ! [X1] :
( element(X1,the_carrier(X0))
=> ! [X2] :
( element(X2,the_carrier(X0))
=> join(X0,meet(X0,X1,X2),X2) = X2 ) ) ) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',d8_lattices) ).
fof(f91,plain,
meet_absorbing(sK0),
inference(cnf_transformation,[],[f54]) ).
fof(f97,plain,
! [X2,X0,X1] :
( join(X0,X1,X2) != X2
| ~ join_semilatt_str(X0)
| ~ element(X1,the_carrier(X0))
| ~ element(X2,the_carrier(X0))
| empty_carrier(X0)
| below(X0,X1,X2) ),
inference(cnf_transformation,[],[f62]) ).
fof(f62,plain,
! [X0] :
( ! [X1] :
( ! [X2] :
( ( below(X0,X1,X2)
<=> join(X0,X1,X2) = X2 )
| ~ element(X2,the_carrier(X0)) )
| ~ element(X1,the_carrier(X0)) )
| ~ join_semilatt_str(X0)
| empty_carrier(X0) ),
inference(flattening,[],[f61]) ).
fof(f61,plain,
! [X0] :
( ! [X1] :
( ! [X2] :
( ( below(X0,X1,X2)
<=> join(X0,X1,X2) = X2 )
| ~ element(X2,the_carrier(X0)) )
| ~ element(X1,the_carrier(X0)) )
| ~ join_semilatt_str(X0)
| empty_carrier(X0) ),
inference(ennf_transformation,[],[f7]) ).
fof(f7,axiom,
! [X0] :
( ( join_semilatt_str(X0)
& ~ empty_carrier(X0) )
=> ! [X1] :
( element(X1,the_carrier(X0))
=> ! [X2] :
( element(X2,the_carrier(X0))
=> ( below(X0,X1,X2)
<=> join(X0,X1,X2) = X2 ) ) ) ),
file('/export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978',d3_lattices) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12 % Problem : SEU304+1 : TPTP v8.1.2. Released v3.3.0.
% 0.06/0.14 % Command : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule file --schedule_file /export/starexec/sandbox/solver/bin/quickGreedyProduceRating_steal_pow3.txt --cores 8 -m 12000 -t %d %s
% 0.15/0.35 % Computer : n025.cluster.edu
% 0.15/0.35 % Model : x86_64 x86_64
% 0.15/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.35 % Memory : 8042.1875MB
% 0.15/0.35 % OS : Linux 3.10.0-693.el7.x86_64
% 0.15/0.35 % CPULimit : 300
% 0.15/0.35 % WCLimit : 300
% 0.15/0.36 % DateTime : Fri May 3 11:40:28 EDT 2024
% 0.15/0.36 % CPUTime :
% 0.15/0.36 This is a FOF_THM_RFO_SEQ problem
% 0.15/0.36 Running vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule file --schedule_file /export/starexec/sandbox/solver/bin/quickGreedyProduceRating_steal_pow3.txt --cores 8 -m 12000 -t 300 /export/starexec/sandbox/tmp/tmp.RYumvmTC7n/Vampire---4.8_31978
% 0.61/0.76 % (32381)lrs-21_1:1_to=lpo:sil=2000:sp=frequency:sos=on:lma=on:i=56:sd=2:ss=axioms:ep=R_0 on Vampire---4 for (2996ds/56Mi)
% 0.61/0.76 % (32373)dis-1011_2:1_sil=2000:lsd=20:nwc=5.0:flr=on:mep=off:st=3.0:i=34:sd=1:ep=RS:ss=axioms_0 on Vampire---4 for (2996ds/34Mi)
% 0.61/0.76 % (32375)lrs+1011_1:1_sil=8000:sp=occurrence:nwc=10.0:i=78:ss=axioms:sgt=8_0 on Vampire---4 for (2996ds/78Mi)
% 0.61/0.76 % (32376)ott+1011_1:1_sil=2000:urr=on:i=33:sd=1:kws=inv_frequency:ss=axioms:sup=off_0 on Vampire---4 for (2996ds/33Mi)
% 0.61/0.76 % (32374)lrs+1011_461:32768_sil=16000:irw=on:sp=frequency:lsd=20:fd=preordered:nwc=10.0:s2agt=32:alpa=false:cond=fast:s2a=on:i=51:s2at=3.0:awrs=decay:awrsf=691:bd=off:nm=20:fsr=off:amm=sco:uhcvi=on:rawr=on_0 on Vampire---4 for (2996ds/51Mi)
% 0.61/0.76 % (32377)lrs+2_1:1_sil=16000:fde=none:sos=all:nwc=5.0:i=34:ep=RS:s2pl=on:lma=on:afp=100000_0 on Vampire---4 for (2996ds/34Mi)
% 0.61/0.76 % (32378)lrs+1002_1:16_to=lpo:sil=32000:sp=unary_frequency:sos=on:i=45:bd=off:ss=axioms_0 on Vampire---4 for (2996ds/45Mi)
% 0.61/0.76 % (32381)Refutation not found, incomplete strategy% (32381)------------------------------
% 0.61/0.76 % (32381)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.61/0.76 % (32381)Termination reason: Refutation not found, incomplete strategy
% 0.61/0.76
% 0.61/0.76 % (32381)Memory used [KB]: 1049
% 0.61/0.76 % (32381)Time elapsed: 0.002 s
% 0.61/0.76 % (32381)Instructions burned: 3 (million)
% 0.61/0.76 % (32379)lrs+21_1:5_sil=2000:sos=on:urr=on:newcnf=on:slsq=on:i=83:slsql=off:bd=off:nm=2:ss=axioms:st=1.5:sp=const_min:gsp=on:rawr=on_0 on Vampire---4 for (2996ds/83Mi)
% 0.61/0.76 % (32381)------------------------------
% 0.61/0.76 % (32381)------------------------------
% 0.61/0.77 % (32378)Refutation not found, incomplete strategy% (32378)------------------------------
% 0.61/0.77 % (32378)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.61/0.77 % (32378)Termination reason: Refutation not found, incomplete strategy
% 0.61/0.77
% 0.61/0.77 % (32378)Memory used [KB]: 1038
% 0.61/0.77 % (32378)Time elapsed: 0.003 s
% 0.61/0.77 % (32378)Instructions burned: 3 (million)
% 0.61/0.77 % (32373)Refutation not found, incomplete strategy% (32373)------------------------------
% 0.61/0.77 % (32373)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.61/0.77 % (32373)Termination reason: Refutation not found, incomplete strategy
% 0.61/0.77
% 0.61/0.77 % (32373)Memory used [KB]: 1054
% 0.61/0.77 % (32373)Time elapsed: 0.004 s
% 0.61/0.77 % (32373)Instructions burned: 4 (million)
% 0.61/0.77 % (32378)------------------------------
% 0.61/0.77 % (32378)------------------------------
% 0.61/0.77 % (32373)------------------------------
% 0.61/0.77 % (32373)------------------------------
% 0.61/0.77 % (32386)lrs+21_1:16_sil=2000:sp=occurrence:urr=on:flr=on:i=55:sd=1:nm=0:ins=3:ss=included:rawr=on:br=off_0 on Vampire---4 for (2995ds/55Mi)
% 0.61/0.77 % (32377)Refutation not found, incomplete strategy% (32377)------------------------------
% 0.61/0.77 % (32377)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.61/0.77 % (32377)Termination reason: Refutation not found, incomplete strategy
% 0.61/0.77
% 0.61/0.77 % (32377)Memory used [KB]: 1146
% 0.61/0.77 % (32377)Time elapsed: 0.005 s
% 0.61/0.77 % (32377)Instructions burned: 6 (million)
% 0.61/0.77 % (32377)------------------------------
% 0.61/0.77 % (32377)------------------------------
% 0.61/0.77 % (32390)dis+3_25:4_sil=16000:sos=all:erd=off:i=50:s2at=4.0:bd=off:nm=60:sup=off:cond=on:av=off:ins=2:nwc=10.0:etr=on:to=lpo:s2agt=20:fd=off:bsr=unit_only:slsq=on:slsqr=28,19:awrs=converge:awrsf=500:tgt=ground:bs=unit_only_0 on Vampire---4 for (2995ds/50Mi)
% 0.61/0.77 % (32379)First to succeed.
% 0.61/0.77 % (32391)lrs+1010_1:2_sil=4000:tgt=ground:nwc=10.0:st=2.0:i=208:sd=1:bd=off:ss=axioms_0 on Vampire---4 for (2995ds/208Mi)
% 0.61/0.77 % (32379)Solution written to "/export/starexec/sandbox/tmp/vampire-proof-32213"
% 0.61/0.77 % (32394)lrs-1011_1:1_sil=4000:plsq=on:plsqr=32,1:sp=frequency:plsql=on:nwc=10.0:i=52:aac=none:afr=on:ss=axioms:er=filter:sgt=16:rawr=on:etr=on:lma=on_0 on Vampire---4 for (2995ds/52Mi)
% 0.61/0.77 % (32375)Also succeeded, but the first one will report.
% 0.61/0.77 % (32379)Refutation found. Thanks to Tanya!
% 0.61/0.77 % SZS status Theorem for Vampire---4
% 0.61/0.77 % SZS output start Proof for Vampire---4
% See solution above
% 0.61/0.77 % (32379)------------------------------
% 0.61/0.77 % (32379)Version: Vampire 4.8 (commit 3a798227e on 2024-05-03 07:42:47 +0200)
% 0.61/0.77 % (32379)Termination reason: Refutation
% 0.61/0.77
% 0.61/0.77 % (32379)Memory used [KB]: 1159
% 0.61/0.77 % (32379)Time elapsed: 0.009 s
% 0.61/0.77 % (32379)Instructions burned: 13 (million)
% 0.61/0.77 % (32213)Success in time 0.409 s
% 0.61/0.77 % Vampire---4.8 exiting
%------------------------------------------------------------------------------