TSTP Solution File: GRP665-10 by Toma---0.4
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- Process Solution
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% File : Toma---0.4
% Problem : GRP665-10 : TPTP v8.1.2. Released v8.1.0.
% Transfm : none
% Format : tptp:raw
% Command : toma --casc %s
% Computer : n029.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 : Thu Aug 31 01:15:56 EDT 2023
% Result : Unsatisfiable 0.48s 0.75s
% Output : CNFRefutation 0.48s
% Verified :
% SZS Type : -
% Comments :
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%----WARNING: Could not form TPTP format derivation
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%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12 % Problem : GRP665-10 : TPTP v8.1.2. Released v8.1.0.
% 0.07/0.13 % Command : toma --casc %s
% 0.12/0.34 % Computer : n029.cluster.edu
% 0.12/0.34 % Model : x86_64 x86_64
% 0.12/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34 % Memory : 8042.1875MB
% 0.12/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34 % CPULimit : 300
% 0.12/0.34 % WCLimit : 300
% 0.12/0.34 % DateTime : Mon Aug 28 22:00:41 EDT 2023
% 0.12/0.34 % CPUTime :
% 0.48/0.75 % SZS status Unsatisfiable
% 0.48/0.75 % SZS output start Proof
% 0.48/0.75 original problem:
% 0.48/0.75 axioms:
% 0.48/0.75 mult(A, ld(A, B)) = B
% 0.48/0.75 ld(A, mult(A, B)) = B
% 0.48/0.75 mult(rd(A, B), B) = A
% 0.48/0.75 rd(mult(A, B), B) = A
% 0.48/0.75 mult(A, unit()) = A
% 0.48/0.75 mult(unit(), A) = A
% 0.48/0.75 mult(A, mult(B, C)) = mult(rd(mult(A, B), A), mult(A, C))
% 0.48/0.75 mult(mult(A, B), C) = mult(mult(A, C), ld(C, mult(B, C)))
% 0.48/0.75 mult(op_c(), A) = mult(A, op_c())
% 0.48/0.75 goal:
% 0.48/0.75 mult(op_c(), mult(x0(), x1())) != mult(mult(op_c(), x0()), x1())
% 0.48/0.75 To show the unsatisfiability of the original goal,
% 0.48/0.75 it suffices to show that mult(op_c(), mult(x0(), x1())) = mult(mult(op_c(), x0()), x1()) (skolemized goal) is valid under the axioms.
% 0.48/0.75 Here is an equational proof:
% 0.48/0.75 1: ld(X0, mult(X0, X1)) = X1.
% 0.48/0.75 Proof: Axiom.
% 0.48/0.75
% 0.48/0.75 7: mult(mult(X0, X1), X2) = mult(mult(X0, X2), ld(X2, mult(X1, X2))).
% 0.48/0.75 Proof: Axiom.
% 0.48/0.75
% 0.48/0.75 8: mult(op_c(), X0) = mult(X0, op_c()).
% 0.48/0.75 Proof: Axiom.
% 0.48/0.75
% 0.48/0.75 14: op_c() = ld(X2, mult(op_c(), X2)).
% 0.48/0.75 Proof: A critical pair between equations 1 and 8.
% 0.48/0.75
% 0.48/0.75 31: mult(mult(X3, X2), ld(X2, mult(op_c(), X2))) = mult(mult(op_c(), X3), X2).
% 0.48/0.75 Proof: A critical pair between equations 7 and 8.
% 0.48/0.75
% 0.48/0.75 35: mult(op_c(), mult(X3, X2)) = mult(mult(op_c(), X3), X2).
% 0.48/0.75 Proof: Rewrite equation 31,
% 0.48/0.75 lhs with equations [14,8]
% 0.48/0.75 rhs with equations [].
% 0.48/0.75
% 0.48/0.75 36: mult(op_c(), mult(x0(), x1())) = mult(mult(op_c(), x0()), x1()).
% 0.48/0.75 Proof: Rewrite lhs with equations []
% 0.48/0.75 rhs with equations [35].
% 0.48/0.75
% 0.48/0.75 % SZS output end Proof
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