%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : GRP679-1 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% Computer : n004.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 : Sun Sep 27 07:21:44 AM UTC 2026
% Result : Unsatisfiable 5.21s 3.33s
% Output : Refutation 5.21s
% Verified :
% SZS Type : Refutation
% Derivation depth : 2
% Number of leaves : 9
% Syntax : Number of formulae : 19 ( 19 unt; 0 typ; 0 def)
% Number of atoms : 19 ( 18 equ; 0 cnn)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 90 ( 2 ~; 0 |; 0 &; 88 @)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 3 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 8 ( 6 usr; 4 con; 0-2 aty)
% Number of variables : 28 ( 0 ^; 28 !; 0 ?; 28 :)
% Comments :
%------------------------------------------------------------------------------
thf(mult_decl,type,
mult: $i > $i > $i ).
thf(op_c_decl,type,
op_c: $i ).
thf(a_decl,type,
a: $i ).
thf(ld_decl,type,
ld: $i > $i > $i ).
thf(rd_decl,type,
rd: $i > $i > $i ).
thf(unit_decl,type,
unit: $i ).
thf(1,negated_conjecture,
( ( a @ ( op_c @ ( op_c @ mult ) @ mult ) )
!= ( op_c @ ( op_c @ mult ) @ ( a @ mult ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',goals) ).
thf(10,plain,
( ( a @ ( op_c @ ( op_c @ mult ) @ mult ) )
!= ( op_c @ ( op_c @ mult ) @ ( a @ mult ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[1]) ).
thf(8,axiom,
! [C: $i,B: $i,A: $i] :
( ( C @ ( A @ mult ) @ ( B @ mult ) @ ( A @ mult ) )
= ( C @ ( A @ ( B @ mult ) @ ( A @ mult ) @ mult ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c07) ).
thf(25,plain,
! [C: $i,B: $i,A: $i] :
( ( C @ ( A @ mult ) @ ( B @ mult ) @ ( A @ mult ) )
= ( C @ ( A @ ( B @ mult ) @ ( A @ mult ) @ mult ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).
thf(6,axiom,
! [A: $i] :
( ( unit @ ( A @ mult ) )
= A ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c05) ).
thf(21,plain,
! [A: $i] :
( ( unit @ ( A @ mult ) )
= A ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).
thf(2,axiom,
! [B: $i,A: $i] :
( ( B @ ( A @ ld ) @ ( A @ mult ) )
= B ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c01) ).
thf(13,plain,
! [B: $i,A: $i] :
( ( B @ ( A @ ld ) @ ( A @ mult ) )
= B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(4,axiom,
! [B: $i,A: $i] :
( ( B @ ( B @ ( A @ rd ) @ mult ) )
= A ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c03) ).
thf(17,plain,
! [B: $i,A: $i] :
( ( B @ ( B @ ( A @ rd ) @ mult ) )
= A ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).
thf(9,axiom,
! [A: $i] :
( ( A @ ( op_c @ mult ) )
= ( op_c @ ( A @ mult ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c08) ).
thf(27,plain,
! [A: $i] :
( ( A @ ( op_c @ mult ) )
= ( op_c @ ( A @ mult ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).
thf(7,axiom,
! [A: $i] :
( ( A @ ( unit @ mult ) )
= A ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c06) ).
thf(23,plain,
! [A: $i] :
( ( A @ ( unit @ mult ) )
= A ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).
thf(5,axiom,
! [B: $i,A: $i] :
( ( B @ ( B @ ( A @ mult ) @ rd ) )
= A ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c04) ).
thf(19,plain,
! [B: $i,A: $i] :
( ( B @ ( B @ ( A @ mult ) @ rd ) )
= A ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).
thf(3,axiom,
! [B: $i,A: $i] :
( ( B @ ( A @ mult ) @ ( A @ ld ) )
= B ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',c02) ).
thf(15,plain,
! [B: $i,A: $i] :
( ( B @ ( A @ mult ) @ ( A @ ld ) )
= B ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(55,plain,
$false,
inference(e,[status(thm)],[10,25,21,13,17,27,23,19,15]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : GRP679-1 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.11 % Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.22/0.48 % Computer : n004.cluster.edu
% 0.22/0.48 % Model : x86_64 x86_64
% 0.22/0.48 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.22/0.48 % Memory : 8046.5625MB
% 0.22/0.48 % OS : Linux 6.8.0-71-generic
% 0.22/0.48 % CPULimit : 300
% 0.22/0.48 % WCLimit : 300
% 0.22/0.48 % DateTime : Fri Sep 25 15:36:05 UTC 2026
% 0.22/0.48 % CPUTime :
% 0.22/0.48 Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 1.36/1.31 % [INFO] Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ...
% 1.68/1.56 % [INFO] Parsing done (249ms).
% 1.68/1.58 % [INFO] Running in sequential loop mode.
% 2.65/2.18 % [INFO] eprover registered as external prover.
% 2.65/2.19 % [INFO] Scanning for conjecture ...
% 2.89/2.31 % [INFO] Found a conjecture (or negated_conjecture) and 8 axioms. Running axiom selection ...
% 2.89/2.35 % [INFO] Axiom selection finished. Selected 8 axioms (removed 0 axioms).
% 2.89/2.37 % [INFO] Problem is propositional (TPTP CNF).
% 2.89/2.38 % [INFO] Type checking passed.
% 2.89/2.39 % [CONFIG] Using configuration: timeout(300) with strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>. Searching for refutation ...
% 5.21/3.33 % External prover 'e' found a proof!
% 5.21/3.33 % [INFO] Killing All external provers ...
% 5.21/3.33 % Time passed: 2644ms (effective reasoning time: 1739ms)
% 5.21/3.33 % Axioms used in derivation (8): c05, c08, c04, c01, c03, c06, c02, c07
% 5.21/3.33 % No. of inferences in proof: 19
% 5.21/3.33 % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p : 2644 ms resp. 1739 ms w/o parsing
% 5.21/3.39 % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 5.21/3.39 % [INFO] Killing All external provers ...
%------------------------------------------------------------------------------