%------------------------------------------------------------------------------
% File : Twee---2.7
% Problem : LCL191-3 : TPTP v9.3.1. Released v2.3.0.
% Transfm : none
% Format : tptp:raw
% Command : run_twee /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n002.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 11:49:16 AM UTC 2026
% Result : Unsatisfiable 142.01s 18.37s
% Output : Proof 142.77s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : LCL191-3 : TPTP v9.3.1. Released v2.3.0.
% 0.00/0.04 % Command : run_twee /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.34 % Computer : n002.cluster.edu
% 0.07/0.34 % Model : x86_64 x86_64
% 0.07/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.34 % Memory : 8046.5625MB
% 0.07/0.34 % OS : Linux 6.8.0-71-generic
% 0.07/0.34 % CPULimit : 300
% 0.07/0.34 % WCLimit : 300
% 0.07/0.35 % DateTime : Sun Sep 27 15:28:22 UTC 2026
% 0.07/0.35 % CPUTime :
% 0.07/0.35 Running run_twee /export/starexec/sandbox/benchmark/theBenchmark.p
% 142.01/18.37 Command-line arguments: --lhs-weight 1 --flip-ordering --normalise-queue-percent 10 --cp-renormalise-threshold 10 --complete-subsets --ground-joining-incomplete-limit 15 --flatten-regeneralise
% 142.01/18.37
% 142.01/18.37 % SZS status Unsatisfiable
% 142.01/18.37
% 142.77/18.43 % SZS output start Proof
% 142.77/18.43 Axiom 1 (implies_definition): implies(X, Y) = or(not(X), Y).
% 142.77/18.43 Axiom 2 (ifeq_axiom): ifeq(X, X, Y, Z) = Y.
% 142.77/18.43 Axiom 3 (rule_1): ifeq(axiom(X), true, theorem(X), true) = true.
% 142.77/18.43 Axiom 4 (axiom_1_4): axiom(implies(or(X, Y), or(Y, X))) = true.
% 142.77/18.43 Axiom 5 (rule_2): ifeq(theorem(implies(X, Y)), true, ifeq(theorem(X), true, theorem(Y), true), true) = true.
% 142.77/18.43 Axiom 6 (axiom_1_6): axiom(implies(implies(X, Y), implies(or(Z, X), or(Z, Y)))) = true.
% 142.77/18.43 Axiom 7 (axiom_1_5): axiom(implies(or(X, or(Y, Z)), or(Y, or(X, Z)))) = true.
% 142.77/18.43
% 142.77/18.43 Goal 1 (prove_this): theorem(implies(or(p, or(q, r)), or(or(p, q), r))) = true.
% 142.77/18.43 Proof:
% 142.77/18.43 theorem(implies(or(p, or(q, r)), or(or(p, q), r)))
% 142.77/18.43 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.43 ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true)
% 142.77/18.43 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.43 ifeq(true, true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.43 = { by axiom 5 (rule_2) R->L }
% 142.77/18.43 ifeq(ifeq(theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true, ifeq(theorem(implies(or(r, or(p, q)), or(or(p, q), r))), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.43 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.43 ifeq(ifeq(theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true, ifeq(ifeq(true, true, theorem(implies(or(r, or(p, q)), or(or(p, q), r))), true), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.43 = { by axiom 4 (axiom_1_4) R->L }
% 142.77/18.43 ifeq(ifeq(theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true, ifeq(ifeq(axiom(implies(or(r, or(p, q)), or(or(p, q), r))), true, theorem(implies(or(r, or(p, q)), or(or(p, q), r))), true), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.43 = { by axiom 3 (rule_1) }
% 142.77/18.43 ifeq(ifeq(theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true, ifeq(true, true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.43 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.43 ifeq(ifeq(theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.43 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.43 ifeq(ifeq(ifeq(true, true, theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 6 (axiom_1_6) R->L }
% 142.77/18.44 ifeq(ifeq(ifeq(axiom(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(or(not(or(p, or(q, r))), or(r, or(p, q))), or(not(or(p, or(q, r))), or(or(p, q), r))))), true, theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 1 (implies_definition) R->L }
% 142.77/18.44 ifeq(ifeq(ifeq(axiom(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), or(not(or(p, or(q, r))), or(or(p, q), r))))), true, theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 1 (implies_definition) R->L }
% 142.77/18.44 ifeq(ifeq(ifeq(axiom(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true, theorem(implies(implies(or(r, or(p, q)), or(or(p, q), r)), implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r))))), true), true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 3 (rule_1) }
% 142.77/18.44 ifeq(ifeq(true, true, theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(true, true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 5 (rule_2) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(theorem(implies(or(r, implies(or(p, or(q, r)), or(p, q))), implies(or(p, or(q, r)), or(r, or(p, q))))), true, ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(true, true, theorem(implies(or(r, implies(or(p, or(q, r)), or(p, q))), implies(or(p, or(q, r)), or(r, or(p, q))))), true), true, ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 7 (axiom_1_5) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(axiom(implies(or(r, or(not(or(p, or(q, r))), or(p, q))), or(not(or(p, or(q, r))), or(r, or(p, q))))), true, theorem(implies(or(r, implies(or(p, or(q, r)), or(p, q))), implies(or(p, or(q, r)), or(r, or(p, q))))), true), true, ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 1 (implies_definition) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(axiom(implies(or(r, implies(or(p, or(q, r)), or(p, q))), or(not(or(p, or(q, r))), or(r, or(p, q))))), true, theorem(implies(or(r, implies(or(p, or(q, r)), or(p, q))), implies(or(p, or(q, r)), or(r, or(p, q))))), true), true, ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 1 (implies_definition) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(axiom(implies(or(r, implies(or(p, or(q, r)), or(p, q))), implies(or(p, or(q, r)), or(r, or(p, q))))), true, theorem(implies(or(r, implies(or(p, or(q, r)), or(p, q))), implies(or(p, or(q, r)), or(r, or(p, q))))), true), true, ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 3 (rule_1) }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(true, true, ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(true, true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 5 (rule_2) R->L }
% 142.77/18.44 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(theorem(implies(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q))), implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q)))))), true, ifeq(theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.44 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(ifeq(true, true, theorem(implies(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q))), implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q)))))), true), true, ifeq(theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 6 (axiom_1_6) R->L }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(ifeq(axiom(implies(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q))), implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q)))))), true, theorem(implies(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q))), implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q)))))), true), true, ifeq(theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 3 (rule_1) }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(true, true, ifeq(theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(ifeq(true, true, theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 6 (axiom_1_6) R->L }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(ifeq(axiom(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true, theorem(implies(implies(or(q, r), q), implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 3 (rule_1) }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(ifeq(true, true, theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.45 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(true, true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.45 = { by axiom 5 (rule_2) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true, ifeq(theorem(implies(or(q, r), or(r, q))), true, theorem(or(r, implies(or(q, r), q))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true, ifeq(ifeq(true, true, theorem(implies(or(q, r), or(r, q))), true), true, theorem(or(r, implies(or(q, r), q))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 4 (axiom_1_4) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true, ifeq(ifeq(axiom(implies(or(q, r), or(r, q))), true, theorem(implies(or(q, r), or(r, q))), true), true, theorem(or(r, implies(or(q, r), q))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 3 (rule_1) }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true, ifeq(true, true, theorem(or(r, implies(or(q, r), q))), true), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true, theorem(or(r, implies(or(q, r), q))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 2 (ifeq_axiom) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(ifeq(true, true, theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true), true, theorem(or(r, implies(or(q, r), q))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 7 (axiom_1_5) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(ifeq(axiom(implies(or(not(or(q, r)), or(r, q)), or(r, or(not(or(q, r)), q)))), true, theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true), true, theorem(or(r, implies(or(q, r), q))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 1 (implies_definition) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(ifeq(axiom(implies(implies(or(q, r), or(r, q)), or(r, or(not(or(q, r)), q)))), true, theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true), true, theorem(or(r, implies(or(q, r), q))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.46 = { by axiom 1 (implies_definition) R->L }
% 142.77/18.46 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(ifeq(axiom(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true, theorem(implies(implies(or(q, r), or(r, q)), or(r, implies(or(q, r), q)))), true), true, theorem(or(r, implies(or(q, r), q))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.47 = { by axiom 3 (rule_1) }
% 142.77/18.47 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(ifeq(true, true, theorem(or(r, implies(or(q, r), q))), true), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.47 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.47 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(ifeq(theorem(implies(or(r, implies(or(q, r), q)), or(r, implies(or(p, or(q, r)), or(p, q))))), true, ifeq(theorem(or(r, implies(or(q, r), q))), true, theorem(or(r, implies(or(p, or(q, r)), or(p, q)))), true), true), true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.47 = { by axiom 5 (rule_2) }
% 142.77/18.47 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(ifeq(true, true, theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.47 = { by axiom 2 (ifeq_axiom) }
% 142.77/18.47 ifeq(theorem(implies(implies(or(p, or(q, r)), or(r, or(p, q))), implies(or(p, or(q, r)), or(or(p, q), r)))), true, ifeq(theorem(implies(or(p, or(q, r)), or(r, or(p, q)))), true, theorem(implies(or(p, or(q, r)), or(or(p, q), r))), true), true)
% 142.77/18.47 = { by axiom 5 (rule_2) }
% 142.77/18.47 true
% 142.77/18.47 % SZS output end Proof
% 142.77/18.47
% 142.77/18.47 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------