%------------------------------------------------------------------------------
% File : SOS---2.0
% Problem : SWC035-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : sos-script %s
% Computer : n026.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 : 600s
% DateTime : Tue Jul 19 21:58:59 EDT 2022
% Result : Unsatisfiable 0.21s 0.45s
% Output : Refutation 0.21s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.08/0.13 % Problem : SWC035-1 : TPTP v8.1.0. Released v2.4.0.
% 0.08/0.14 % Command : sos-script %s
% 0.14/0.36 % Computer : n026.cluster.edu
% 0.14/0.36 % Model : x86_64 x86_64
% 0.14/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.36 % Memory : 8042.1875MB
% 0.14/0.36 % OS : Linux 3.10.0-693.el7.x86_64
% 0.14/0.36 % CPULimit : 300
% 0.14/0.36 % WCLimit : 600
% 0.14/0.36 % DateTime : Sun Jun 12 05:21:20 EDT 2022
% 0.14/0.36 % CPUTime :
% 0.21/0.45
% 0.21/0.45 -------- PROOF --------
% 0.21/0.45 % SZS status Unsatisfiable
% 0.21/0.45 % SZS output start Refutation
% 0.21/0.45 ----- Otter 3.2, August 2001 -----
% 0.21/0.45 The process was started by sandbox on n026.cluster.edu,
% 0.21/0.45 Sun Jun 12 05:21:20 2022
% 0.21/0.45 The command was "./sos". The process ID is 25769.
% 0.21/0.45
% 0.21/0.45 set(prolog_style_variables).
% 0.21/0.45 set(auto).
% 0.21/0.45 dependent: set(auto1).
% 0.21/0.45 dependent: set(process_input).
% 0.21/0.45 dependent: clear(print_kept).
% 0.21/0.45 dependent: clear(print_new_demod).
% 0.21/0.45 dependent: clear(print_back_demod).
% 0.21/0.45 dependent: clear(print_back_sub).
% 0.21/0.45 dependent: set(control_memory).
% 0.21/0.45 dependent: assign(max_mem, 12000).
% 0.21/0.45 dependent: assign(pick_given_ratio, 4).
% 0.21/0.45 dependent: assign(stats_level, 1).
% 0.21/0.45 dependent: assign(pick_semantic_ratio, 3).
% 0.21/0.45 dependent: assign(sos_limit, 5000).
% 0.21/0.45 dependent: assign(max_weight, 60).
% 0.21/0.45 clear(print_given).
% 0.21/0.45
% 0.21/0.45 list(usable).
% 0.21/0.45
% 0.21/0.45 SCAN INPUT: prop=0, horn=0, equality=1, symmetry=0, max_lits=10.
% 0.21/0.45
% 0.21/0.45 This ia a non-Horn set with equality. The strategy will be
% 0.21/0.45 Knuth-Bendix, ordered hyper_res, ur_res, factoring, and
% 0.21/0.45 unit deletion, with positive clauses in sos and nonpositive
% 0.21/0.45 clauses in usable.
% 0.21/0.45
% 0.21/0.45 dependent: set(knuth_bendix).
% 0.21/0.45 dependent: set(para_from).
% 0.21/0.45 dependent: set(para_into).
% 0.21/0.45 dependent: clear(para_from_right).
% 0.21/0.45 dependent: clear(para_into_right).
% 0.21/0.45 dependent: set(para_from_vars).
% 0.21/0.45 dependent: set(eq_units_both_ways).
% 0.21/0.45 dependent: set(dynamic_demod_all).
% 0.21/0.45 dependent: set(dynamic_demod).
% 0.21/0.45 dependent: set(order_eq).
% 0.21/0.45 dependent: set(back_demod).
% 0.21/0.45 dependent: set(lrpo).
% 0.21/0.45 dependent: set(hyper_res).
% 0.21/0.45 dependent: set(unit_deletion).
% 0.21/0.45 dependent: set(factor).
% 0.21/0.45
% 0.21/0.45 ------------> process usable:
% 0.21/0.45 Following clause subsumed by 23 during input processing: 0 [] {-} -ssList(A)|ssList(tl(A))|nil=A.
% 0.21/0.45 Following clause subsumed by 24 during input processing: 0 [] {-} -ssList(A)|ssItem(hd(A))|nil=A.
% 0.21/0.45 Following clause subsumed by 67 during input processing: 0 [] {-} -leq(A,B)| -ssItem(B)| -ssItem(A)|lt(A,B)|A=B.
% 0.21/0.45 137 back subsumes 136.
% 0.21/0.45 147 back subsumes 141.
% 0.21/0.45
% 0.21/0.45 ------------> process sos:
% 0.21/0.45
% 0.21/0.45 ----> UNIT CONFLICT at 0.07 sec ----> 432 [binary,430.1,132.1] {-} $F.
% 0.21/0.45
% 0.21/0.45 Length of proof is 5. Level of proof is 3.
% 0.21/0.45
% 0.21/0.45 ---------------- PROOF ----------------
% 0.21/0.45 % SZS status Unsatisfiable
% 0.21/0.45 % SZS output start Refutation
% 0.21/0.45
% 0.21/0.45 131 [] {-} nil!=sk1.
% 0.21/0.45 132 [copy,131,flip.1] {-} sk1!=nil.
% 0.21/0.45 420 [] {-} nil=sk2.
% 0.21/0.45 422,421 [copy,420,flip.1] {-} sk2=nil.
% 0.21/0.45 423 [] {-} sk2=sk4.
% 0.21/0.45 425,424 [copy,423,demod,422,flip.1] {-} sk4=nil.
% 0.21/0.45 426 [] {-} sk1=sk3.
% 0.21/0.45 428,427 [copy,426,flip.1] {-} sk3=sk1.
% 0.21/0.45 429 [] {-} sk4=sk3.
% 0.21/0.45 430 [copy,429,demod,425,428,flip.1] {-} sk1=nil.
% 0.21/0.45 432 [binary,430.1,132.1] {-} $F.
% 0.21/0.45
% 0.21/0.45 % SZS output end Refutation
% 0.21/0.45 ------------ end of proof -------------
% 0.21/0.45
% 0.21/0.45
% 0.21/0.45 Search stopped by max_proofs option.
% 0.21/0.45
% 0.21/0.45
% 0.21/0.45 Search stopped by max_proofs option.
% 0.21/0.45
% 0.21/0.45 ============ end of search ============
% 0.21/0.45
% 0.21/0.45 That finishes the proof of the theorem.
% 0.21/0.45
% 0.21/0.45 Process 25769 finished Sun Jun 12 05:21:20 2022
%------------------------------------------------------------------------------