%------------------------------------------------------------------------------
% File : SOS---2.0
% Problem : HWV020-3 : TPTP v8.1.0. Released v2.5.0.
% Transfm : none
% Format : tptp:raw
% Command : sos-script %s
% Computer : n019.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 : Sat Jul 16 19:12:42 EDT 2022
% Result : Unsatisfiable 0.46s 0.68s
% Output : Refutation 0.46s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.11 % Problem : HWV020-3 : TPTP v8.1.0. Released v2.5.0.
% 0.06/0.12 % Command : sos-script %s
% 0.12/0.33 % Computer : n019.cluster.edu
% 0.12/0.33 % Model : x86_64 x86_64
% 0.12/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33 % Memory : 8042.1875MB
% 0.12/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33 % CPULimit : 300
% 0.12/0.33 % WCLimit : 600
% 0.12/0.33 % DateTime : Fri Jun 17 00:52:09 EDT 2022
% 0.12/0.33 % CPUTime :
% 0.12/0.36 ----- Otter 3.2, August 2001 -----
% 0.12/0.36 The process was started by sandbox2 on n019.cluster.edu,
% 0.12/0.36 Fri Jun 17 00:52:09 2022
% 0.12/0.36 The command was "./sos". The process ID is 2613.
% 0.12/0.36
% 0.12/0.36 set(prolog_style_variables).
% 0.12/0.36 set(auto).
% 0.12/0.36 dependent: set(auto1).
% 0.12/0.36 dependent: set(process_input).
% 0.12/0.36 dependent: clear(print_kept).
% 0.12/0.36 dependent: clear(print_new_demod).
% 0.12/0.36 dependent: clear(print_back_demod).
% 0.12/0.36 dependent: clear(print_back_sub).
% 0.12/0.36 dependent: set(control_memory).
% 0.12/0.36 dependent: assign(max_mem, 12000).
% 0.12/0.36 dependent: assign(pick_given_ratio, 4).
% 0.12/0.36 dependent: assign(stats_level, 1).
% 0.12/0.36 dependent: assign(pick_semantic_ratio, 3).
% 0.12/0.36 dependent: assign(sos_limit, 5000).
% 0.12/0.36 dependent: assign(max_weight, 60).
% 0.12/0.36 clear(print_given).
% 0.12/0.36
% 0.12/0.36 list(usable).
% 0.12/0.36
% 0.12/0.36 SCAN INPUT: prop=0, horn=0, equality=1, symmetry=0, max_lits=10.
% 0.12/0.36
% 0.12/0.36 This ia a non-Horn set with equality. The strategy will be
% 0.12/0.36 Knuth-Bendix, ordered hyper_res, ur_res, factoring, and
% 0.12/0.36 unit deletion, with positive clauses in sos and nonpositive
% 0.12/0.36 clauses in usable.
% 0.12/0.36
% 0.12/0.36 dependent: set(knuth_bendix).
% 0.12/0.36 dependent: set(para_from).
% 0.12/0.36 dependent: set(para_into).
% 0.12/0.36 dependent: clear(para_from_right).
% 0.12/0.36 dependent: clear(para_into_right).
% 0.12/0.36 dependent: set(para_from_vars).
% 0.12/0.36 dependent: set(eq_units_both_ways).
% 0.12/0.36 dependent: set(dynamic_demod_all).
% 0.12/0.36 dependent: set(dynamic_demod).
% 0.12/0.36 dependent: set(order_eq).
% 0.12/0.36 dependent: set(back_demod).
% 0.12/0.36 dependent: set(lrpo).
% 0.12/0.36 dependent: set(hyper_res).
% 0.12/0.36 dependent: set(unit_deletion).
% 0.12/0.36 dependent: set(factor).
% 0.12/0.36
% 0.12/0.36 ------------> process usable:
% 0.12/0.36
% 0.12/0.36 ------------> process sos:
% 0.12/0.36 Following clause subsumed by 191 during input processing: 0 [copy,145,flip.1] {-} n1=n1.
% 0.12/0.36 Following clause subsumed by 191 during input processing: 0 [copy,191,flip.1] {-} A=A.
% 0.12/0.36 191 back subsumes 145.
% 0.12/0.36 191 back subsumes 120.
% 0.12/0.36
% 0.12/0.36 ======= end of input processing =======
% 0.46/0.65
% 0.46/0.65 Stopped by limit on insertions
% 0.46/0.65
% 0.46/0.65
% 0.46/0.65 Failed to model usable list: disabling FINDER
% 0.46/0.65
% 0.46/0.65
% 0.46/0.65
% 0.46/0.65 -------------- Softie stats --------------
% 0.46/0.65
% 0.46/0.65 UPDATE_STOP: 300
% 0.46/0.65 SFINDER_TIME_LIMIT: 2
% 0.46/0.65 SHORT_CLAUSE_CUTOFF: 4
% 0.46/0.65 number of clauses in intial UL: 123
% 0.46/0.65 number of clauses initially in problem: 181
% 0.46/0.65 percentage of clauses intially in UL: 67
% 0.46/0.65 percentage of distinct symbols occuring in initial UL: 75
% 0.46/0.65 percent of all initial clauses that are short: 100
% 0.46/0.65 absolute distinct symbol count: 58
% 0.46/0.65 distinct predicate count: 4
% 0.46/0.65 distinct function count: 42
% 0.46/0.65 distinct constant count: 12
% 0.46/0.65
% 0.46/0.65 ---------- no more Softie stats ----------
% 0.46/0.65
% 0.46/0.65
% 0.46/0.65
% 0.46/0.65 =========== start of search ===========
% 0.46/0.68
% 0.46/0.68 -------- PROOF --------
% 0.46/0.68 % SZS status Unsatisfiable
% 0.46/0.68 % SZS output start Refutation
% 0.46/0.68
% 0.46/0.68 -----> EMPTY CLAUSE at 0.30 sec ----> 821 [para_from,282.1.1,45.2.1,unit_del,104,141,189,102,103] {-} $F.
% 0.46/0.68
% 0.46/0.68 Length of proof is 1. Level of proof is 1.
% 0.46/0.68
% 0.46/0.68 ---------------- PROOF ----------------
% 0.46/0.68 % SZS status Unsatisfiable
% 0.46/0.68 % SZS output start Refutation
% 0.46/0.68
% 0.46/0.68 4 [] {+} -p__pred_(fwork_DOTfifo_DOTrtl_DOTempty_(A))|fwork_DOTfifo_DOTrtl_DOTint__level_(A)=n0.
% 0.46/0.68 45 [] {+} p__pred_(fwork_DOTfifo_DOTrtl_DOTrd__error_(f_ADD_(A,n1)))| -p_LES_EQU_(fwork_DOTfifo_DOTrtl_DOTint__level_(A),n0)| -p__pred_(fwork_DOTfifo_DOTrtl_DOTrd_(A))|p__pred_(fwork_DOTfifo_DOTrtl_DOTwr_(A))|p__pred_(fwork_DOTfifo_DOTrtl_DOTreset_(A)).
% 0.46/0.68 102 [] {+} -p__pred_(fwork_DOTfifo_DOTrtl_DOTwr_(t_206)).
% 0.46/0.68 103 [] {+} -p__pred_(fwork_DOTfifo_DOTrtl_DOTreset_(t_206)).
% 0.46/0.68 104 [] {+} -p__pred_(fwork_DOTfifo_DOTrtl_DOTrd__error_(f_ADD_(t_206,n1))).
% 0.46/0.68 141 [] {-} p_LES_EQU_(A,A).
% 0.46/0.68 189 [] {-} p__pred_(fwork_DOTfifo_DOTrtl_DOTrd_(t_206)).
% 0.46/0.68 190 [] {-} p__pred_(fwork_DOTfifo_DOTrtl_DOTempty_(t_206)).
% 0.46/0.68 282 [hyper,190,4] {-} fwork_DOTfifo_DOTrtl_DOTint__level_(t_206)=n0.
% 0.46/0.68 821 [para_from,282.1.1,45.2.1,unit_del,104,141,189,102,103] {-} $F.
% 0.46/0.68
% 0.46/0.68 % SZS output end Refutation
% 0.46/0.68 ------------ end of proof -------------
% 0.46/0.68
% 0.46/0.68
% 0.46/0.68 Search stopped by max_proofs option.
% 0.46/0.68
% 0.46/0.68
% 0.46/0.68 Search stopped by max_proofs option.
% 0.46/0.68
% 0.46/0.68 ============ end of search ============
% 0.46/0.68
% 0.46/0.68 That finishes the proof of the theorem.
% 0.46/0.68
% 0.46/0.68 Process 2613 finished Fri Jun 17 00:52:10 2022
%------------------------------------------------------------------------------