%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : PLA019-1 : TPTP v9.3.1. Released v1.1.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n006.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 : Thu Sep 24 01:58:33 PM UTC 2026
% Result : Unsatisfiable 0.16s 5.47s
% Output : CNFRefutation 0.16s
% Verified :
% SZS Type : Refutation
% Derivation depth : 22
% Number of leaves : 15
% Syntax : Number of formulae : 58 ( 18 unt; 0 def)
% Number of atoms : 178 ( 0 equ)
% Maximal formula atoms : 8 ( 3 avg)
% Number of connectives : 261 ( 141 ~; 120 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 11 ( 6 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 11 ( 11 usr; 5 con; 0-2 aty)
% Number of variables : 99 ( 99 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f2,axiom,
! [X,State] :
( ~ differ(X,table)
| ~ holds(clear(X),State)
| ~ holds(empty,State)
| holds(holding(X),do(pickup(X),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f3,axiom,
! [Y,X,State] :
( ~ holds(empty,State)
| ~ holds(clear(X),State)
| ~ holds(on(X,Y),State)
| holds(clear(Y),do(pickup(X),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f5,axiom,
! [X,Z,State] :
( ~ differ(X,Z)
| ~ holds(clear(X),State)
| holds(clear(X),do(pickup(Z),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f6,axiom,
! [X,Y,State] :
( ~ holds(clear(Y),State)
| ~ holds(holding(X),State)
| holds(empty,do(putdown(X,Y),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f7,axiom,
! [X,Y,State] :
( ~ holds(clear(Y),State)
| ~ holds(holding(X),State)
| holds(on(X,Y),do(putdown(X,Y),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f8,axiom,
! [X,Y,State] :
( ~ holds(clear(Y),State)
| ~ holds(holding(X),State)
| holds(clear(X),do(putdown(X,Y),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f10,axiom,
! [Z,X,Y,State] :
( ~ differ(Z,Y)
| ~ holds(clear(Z),State)
| holds(clear(Z),do(putdown(X,Y),State)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f19,axiom,
differ(c,d),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f20,axiom,
differ(c,table),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f21,axiom,
differ(d,table),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f24,axiom,
holds(on(c,d),s0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f28,axiom,
holds(clear(c),s0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f29,axiom,
holds(empty,s0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f30,axiom,
! [State] : holds(clear(table),State),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f31,negated_conjecture,
! [State] : ~ holds(on(d,c),State),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f34,plain,
! [X] :
( ~ differ(X,table)
| ! [State] :
( ~ holds(clear(X),State)
| ~ holds(empty,State)
| holds(holding(X),do(pickup(X),State)) ) ),
inference(miniscoping,[status(thm)],[f2]) ).
fof(f35,plain,
! [X0,X1] :
( ~ differ(X0,table)
| ~ holds(clear(X0),X1)
| ~ holds(empty,X1)
| holds(holding(X0),do(pickup(X0),X1)) ),
inference(cnf_transformation,[status(thm)],[f34]) ).
fof(f36,plain,
! [State] :
( ~ holds(empty,State)
| ! [X] :
( ~ holds(clear(X),State)
| ! [Y] :
( ~ holds(on(X,Y),State)
| holds(clear(Y),do(pickup(X),State)) ) ) ),
inference(miniscoping,[status(thm)],[f3]) ).
fof(f37,plain,
! [X0,X1,X2] :
( ~ holds(empty,X2)
| ~ holds(clear(X1),X2)
| ~ holds(on(X1,X0),X2)
| holds(clear(X0),do(pickup(X1),X2)) ),
inference(cnf_transformation,[status(thm)],[f36]) ).
fof(f40,plain,
! [X,Z] :
( ~ differ(X,Z)
| ! [State] :
( ~ holds(clear(X),State)
| holds(clear(X),do(pickup(Z),State)) ) ),
inference(miniscoping,[status(thm)],[f5]) ).
fof(f41,plain,
! [X0,X1,X2] :
( ~ differ(X0,X1)
| ~ holds(clear(X0),X2)
| holds(clear(X0),do(pickup(X1),X2)) ),
inference(cnf_transformation,[status(thm)],[f40]) ).
fof(f42,plain,
! [Y,State] :
( ~ holds(clear(Y),State)
| ! [X] :
( ~ holds(holding(X),State)
| holds(empty,do(putdown(X,Y),State)) ) ),
inference(miniscoping,[status(thm)],[f6]) ).
fof(f43,plain,
! [X0,X1,X2] :
( ~ holds(clear(X1),X2)
| ~ holds(holding(X0),X2)
| holds(empty,do(putdown(X0,X1),X2)) ),
inference(cnf_transformation,[status(thm)],[f42]) ).
fof(f44,plain,
! [Y,State] :
( ~ holds(clear(Y),State)
| ! [X] :
( ~ holds(holding(X),State)
| holds(on(X,Y),do(putdown(X,Y),State)) ) ),
inference(miniscoping,[status(thm)],[f7]) ).
fof(f45,plain,
! [X0,X1,X2] :
( ~ holds(clear(X1),X2)
| ~ holds(holding(X0),X2)
| holds(on(X0,X1),do(putdown(X0,X1),X2)) ),
inference(cnf_transformation,[status(thm)],[f44]) ).
fof(f46,plain,
! [Y,State] :
( ~ holds(clear(Y),State)
| ! [X] :
( ~ holds(holding(X),State)
| holds(clear(X),do(putdown(X,Y),State)) ) ),
inference(miniscoping,[status(thm)],[f8]) ).
fof(f47,plain,
! [X0,X1,X2] :
( ~ holds(clear(X1),X2)
| ~ holds(holding(X0),X2)
| holds(clear(X0),do(putdown(X0,X1),X2)) ),
inference(cnf_transformation,[status(thm)],[f46]) ).
fof(f50,plain,
! [Z,Y] :
( ~ differ(Z,Y)
| ! [State] :
( ~ holds(clear(Z),State)
| ! [X] : holds(clear(Z),do(putdown(X,Y),State)) ) ),
inference(miniscoping,[status(thm)],[f10]) ).
fof(f51,plain,
! [X0,X1,X2,X3] :
( ~ differ(X0,X2)
| ~ holds(clear(X0),X3)
| holds(clear(X0),do(putdown(X1,X2),X3)) ),
inference(cnf_transformation,[status(thm)],[f50]) ).
fof(f60,plain,
differ(c,d),
inference(cnf_transformation,[status(thm)],[f19]) ).
fof(f61,plain,
differ(c,table),
inference(cnf_transformation,[status(thm)],[f20]) ).
fof(f62,plain,
differ(d,table),
inference(cnf_transformation,[status(thm)],[f21]) ).
fof(f65,plain,
holds(on(c,d),s0),
inference(cnf_transformation,[status(thm)],[f24]) ).
fof(f69,plain,
holds(clear(c),s0),
inference(cnf_transformation,[status(thm)],[f28]) ).
fof(f70,plain,
holds(empty,s0),
inference(cnf_transformation,[status(thm)],[f29]) ).
fof(f71,plain,
! [X0] : holds(clear(table),X0),
inference(cnf_transformation,[status(thm)],[f30]) ).
fof(f72,plain,
! [X0] : ~ holds(on(d,c),X0),
inference(cnf_transformation,[status(thm)],[f31]) ).
fof(f75,plain,
! [X0] :
( ~ holds(clear(c),X0)
| ~ holds(holding(d),X0) ),
inference(resolution,[status(thm)],[f45,f72]) ).
fof(f76,plain,
! [X0] :
( ~ differ(d,table)
| ~ holds(clear(d),X0)
| ~ holds(empty,X0)
| ~ holds(clear(c),do(pickup(d),X0)) ),
inference(resolution,[status(thm)],[f75,f35]) ).
fof(f77,plain,
! [X0] :
( ~ holds(clear(d),X0)
| ~ holds(empty,X0)
| ~ holds(clear(c),do(pickup(d),X0)) ),
inference(forward_subsumption_resolution,[status(thm)],[f76,f62]) ).
fof(f79,plain,
! [X0] :
( ~ differ(c,d)
| ~ holds(clear(c),X0)
| ~ holds(clear(d),X0)
| ~ holds(empty,X0) ),
inference(resolution,[status(thm)],[f77,f41]) ).
fof(f81,plain,
! [X0] :
( ~ holds(clear(c),X0)
| ~ holds(clear(d),X0)
| ~ holds(empty,X0) ),
inference(forward_subsumption_resolution,[status(thm)],[f79,f60]) ).
fof(f82,plain,
! [X0,X1,X2] :
( ~ holds(clear(X1),X2)
| ~ holds(holding(X0),X2)
| ~ holds(clear(c),do(putdown(X0,X1),X2))
| ~ holds(clear(d),do(putdown(X0,X1),X2)) ),
inference(resolution,[status(thm)],[f81,f43]) ).
fof(f85,plain,
! [X0,X1,X2] :
( ~ differ(d,X1)
| ~ holds(clear(d),X2)
| ~ holds(clear(X1),X2)
| ~ holds(holding(X0),X2)
| ~ holds(clear(c),do(putdown(X0,X1),X2)) ),
inference(resolution,[status(thm)],[f82,f51]) ).
fof(f106,plain,
! [X0,X1,X2] :
( ~ differ(X0,table)
| ~ holds(clear(X0),X2)
| ~ holds(empty,X2)
| ~ holds(clear(X1),do(pickup(X0),X2))
| holds(clear(X0),do(putdown(X0,X1),do(pickup(X0),X2))) ),
inference(resolution,[status(thm)],[f47,f35]) ).
fof(f116,plain,
! [X0,X1] :
( ~ differ(d,X0)
| ~ holds(clear(d),do(pickup(c),X1))
| ~ holds(clear(X0),do(pickup(c),X1))
| ~ holds(holding(c),do(pickup(c),X1))
| ~ differ(c,table)
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(resolution,[status(thm)],[f106,f85]) ).
fof(f119,plain,
! [X0,X1] :
( ~ differ(d,X0)
| ~ holds(clear(d),do(pickup(c),X1))
| ~ holds(holding(c),do(pickup(c),X1))
| ~ differ(c,table)
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(duplicate_literals_removal,[status(thm)],[f116]) ).
fof(f120,plain,
! [X0,X1] :
( ~ differ(d,X0)
| ~ holds(clear(d),do(pickup(c),X1))
| ~ holds(holding(c),do(pickup(c),X1))
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(forward_subsumption_resolution,[status(thm)],[f119,f61]) ).
fof(f121,plain,
! [X0,X1] :
( ~ differ(c,table)
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ differ(d,X0)
| ~ holds(clear(d),do(pickup(c),X1))
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(resolution,[status(thm)],[f120,f35]) ).
fof(f122,plain,
! [X0,X1] :
( ~ differ(c,table)
| ~ differ(d,X0)
| ~ holds(clear(d),do(pickup(c),X1))
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(duplicate_literals_removal,[status(thm)],[f121]) ).
fof(f123,plain,
! [X0,X1] :
( ~ differ(d,X0)
| ~ holds(clear(d),do(pickup(c),X1))
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(forward_subsumption_resolution,[status(thm)],[f122,f61]) ).
fof(f124,plain,
! [X0,X1] :
( ~ holds(empty,X1)
| ~ holds(clear(c),X1)
| ~ holds(on(c,d),X1)
| ~ differ(d,X0)
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(resolution,[status(thm)],[f123,f37]) ).
fof(f126,plain,
! [X0,X1] :
( ~ holds(on(c,d),X1)
| ~ differ(d,X0)
| ~ holds(clear(c),X1)
| ~ holds(empty,X1)
| ~ holds(clear(X0),do(pickup(c),X1)) ),
inference(duplicate_literals_removal,[status(thm)],[f124]) ).
fof(f127,plain,
! [X0] :
( ~ holds(on(c,d),X0)
| ~ holds(clear(c),X0)
| ~ holds(empty,X0)
| ~ holds(clear(table),do(pickup(c),X0)) ),
inference(resolution,[status(thm)],[f126,f62]) ).
fof(f129,plain,
! [X0] :
( ~ holds(on(c,d),X0)
| ~ holds(clear(c),X0)
| ~ holds(empty,X0) ),
inference(forward_subsumption_resolution,[status(thm)],[f127,f71]) ).
fof(f131,plain,
( ~ holds(on(c,d),s0)
| ~ holds(clear(c),s0) ),
inference(resolution,[status(thm)],[f129,f70]) ).
fof(f132,plain,
~ holds(on(c,d),s0),
inference(forward_subsumption_resolution,[status(thm)],[f131,f69]) ).
fof(f133,plain,
$false,
inference(forward_subsumption_resolution,[status(thm)],[f132,f65]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : PLA019-1 : TPTP v9.3.1. Released v1.1.0.
% 0.00/0.05 % Command : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.16/5.43 % Computer : n006.cluster.edu
% 0.16/5.43 % Model : x86_64 x86_64
% 0.16/5.43 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/5.43 % Memory : 8046.5625MB
% 0.16/5.43 % OS : Linux 6.8.0-71-generic
% 0.16/5.43 % CPULimit : 300
% 0.16/5.43 % WCLimit : 300
% 0.16/5.43 % DateTime : Mon Sep 21 03:32:17 UTC 2026
% 0.16/5.43 % CPUTime :
% 0.16/5.45 % Drodi V4.1.1
% 0.16/5.47 % Refutation found
% 0.16/5.47 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.16/5.47 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.21/5.51 % Elapsed time: 0.067229 seconds
% 0.21/5.51 % CPU time: 0.176471 seconds
% 0.21/5.51 % Total memory used: 35.864 MB
% 0.21/5.51 % Net memory used: 35.712 MB
%------------------------------------------------------------------------------