%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : DAT067_1 : TPTP v9.3.1. Released v5.5.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n018.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 : Fri Sep 25 01:13:57 PM UTC 2026
% Result : Theorem 1.53s 1.28s
% Output : CNFRefutation 1.53s
% Verified :
% SZS Type : Refutation
% Derivation depth : 6
% Number of leaves : 2
% Syntax : Number of formulae : 14 ( 5 unt; 0 typ; 0 def)
% Number of atoms : 23 ( 22 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 19 ( 10 ~; 6 |; 2 &)
% ( 0 <=>; 1 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 4 avg)
% Maximal term depth : 3 ( 2 avg)
% Number arithmetic : 36 ( 0 atm; 11 fun; 11 num; 14 var)
% Number of types : 2 ( 0 usr; 1 ari; 0 dat; 0 cdt)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 4 ( 2 usr; 2 prp; 0-2 aty)
% Number of functors : 10 ( 8 usr; 5 con; 0-2 aty)
% Number of variables : 21 ( 0 sgn 18 !; 3 ?; 21 :)
% Comments :
%------------------------------------------------------------------------------
tff(func_def_0,type,
empty: heap ).
tff(pred_def_1,type,
lsls: ( heap * heap ) > $o ).
tff(func_def_2,type,
sel: ( $int * heap ) > $int ).
tff(func_def_3,type,
length: heap > $int ).
tff(func_def_4,type,
app: ( $int * heap ) > heap ).
tff(func_def_5,type,
get: heap > heap ).
tff(func_def_10,type,
sK0: $int ).
tff(func_def_11,type,
sK1: $int ).
tff(func_def_12,type,
sK2: heap ).
tff(f3,axiom,
! [X0: $int,X1: heap,X2: $int] :
( ( X2 != $sum(1,length(X1)) )
=> ( sel(app(X1,X0),X2) = sel(X1,X2) ) ),
file('/export/starexec/sandbox/benchmark/Axioms/DAT006_0.ax',ax_3) ).
tff(f15,conjecture,
! [X0: $int,X1: $int,X2: heap] :
( ( X1 = $sum(1,length(X2)) )
| ( sel(app(X2,X0),X1) = sel(X2,X1) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',th_2) ).
tff(f16,negated_conjecture,
~ ! [X0: $int,X1: $int,X2: heap] :
( ( X1 = $sum(1,length(X2)) )
| ( sel(app(X2,X0),X1) = sel(X2,X1) ) ),
inference(negated_conjecture,[status(cth)],[f15]) ).
tff(f30,plain,
! [X0: $int,X1: heap,X2: $int] :
( ( $sum(1,length(X1)) = X2 )
| ( sel(app(X1,X0),X2) = sel(X1,X2) ) ),
inference(ennf_transformation,[],[f3]) ).
tff(f33,plain,
? [X0: $int,X1: $int,X2: heap] :
( ( $sum(1,length(X2)) != X1 )
& ( sel(app(X2,X0),X1) != sel(X2,X1) ) ),
inference(ennf_transformation,[],[f16]) ).
tff(f38,plain,
( ( sK1 != $sum(1,length(sK2)) )
& ( sel(app(sK2,sK0),sK1) != sel(sK2,sK1) ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1,sK2]),skolemize(X0,sK0),skolemize(X1,sK1),skolemize(X2,sK2)],[f33]) ).
tff(f41,plain,
! [X2: $int,X0: $int,X1: heap] :
( ( $sum(1,length(X1)) = X2 )
| ( sel(app(X1,X0),X2) = sel(X1,X2) ) ),
inference(cnf_transformation,[],[f30]) ).
tff(f57,plain,
sK1 != $sum(1,length(sK2)),
inference(cnf_transformation,[],[f38]) ).
tff(f58,plain,
sel(app(sK2,sK0),sK1) != sel(sK2,sK1),
inference(cnf_transformation,[],[f38]) ).
tcf(c_63,plain,
! [X0_int: $int,X0_heap: heap,X1_int: $int] :
( ( $sum(1,length(X0_heap)) = X1_int )
| ( sel(app(X0_heap,X0_int),X1_int) = sel(X0_heap,X1_int) ) ),
inference(cnf_transformation,[],[f41]) ).
tcf(c_78,negated_conjecture,
sel(app(sK2,sK0),sK1) != sel(sK2,sK1),
inference(cnf_transformation,[],[f58]) ).
tcf(c_79,negated_conjecture,
$sum(1,length(sK2)) != sK1,
inference(cnf_transformation,[],[f57]) ).
tcf(c_127,plain,
( ( $sum(1,length(sK2)) = sK1 )
| ( sel(app(sK2,sK0),sK1) = sel(sK2,sK1) ) ),
inference(instantiation,[status(thm)],[c_63]) ).
tcf(c_128,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_127,c_78,c_79]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : DAT067_1 : TPTP v9.3.1. Released v5.5.0.
% 0.00/0.05 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.12/0.37 % Computer : n018.cluster.edu
% 0.12/0.37 % Model : x86_64 x86_64
% 0.12/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.37 % Memory : 8046.5625MB
% 0.12/0.37 % OS : Linux 6.8.0-71-generic
% 0.12/0.37 % CPULimit : 300
% 0.12/0.37 % WCLimit : 300
% 0.12/0.37 % DateTime : Fri Sep 25 10:25:20 UTC 2026
% 0.12/0.37 % CPUTime :
% 0.12/0.37 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.12/0.40 Running TFA theorem proving
% 0.12/0.40 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s tfa_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.12/0.42
% 0.12/0.42 % ======== iProver multi-core TPTP/SMT =========
% 0.12/0.42
% 0.12/0.42 % Detected problem language: tptp
% 0.12/0.43 % Proving...
% 1.53/1.28 % SZS status Started for theBenchmark.p
% 1.53/1.28 ERROR - "ProverProcess:heur/schedule_none:304.9999735355377" ran with exit code 2 and error: iprover.ml: Unexpected exception: Failure("undefined enum value")
% 1.53/1.28 Fatal error: exception Failure("undefined enum value")
% 1.53/1.28 ERROR - cmd was: ulimit -v 4023281; ./res/iproveropt --schedule none --sub_typing false --suppress_sat_res true --tptp_safe_out true --stats_out none --out_options none --proof_out true --sat_out_model pos --clausifier res/vclausify_rel --clausifier_options "--mode tclausify -t 101.67 --show_fool true" --time_out_real 305.00 /export/starexec/sandbox/benchmark/theBenchmark.p 1>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/nkxo3fgt 2>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/nkxo3fgt_error
% 1.53/1.28 ERROR - "ProverProcess:heur/vip_65520:11.0" ran with exit code 2 and error: iprover.ml: Unexpected exception: Failure("undefined enum value")
% 1.53/1.28 Fatal error: exception Failure("undefined enum value")
% 1.53/1.28 ERROR - cmd was: ulimit -v 4023281; ./res/iproveropt --comb_mode time_based --comb_res_mult 6 --comb_sup_deep_mult 0 --comb_sup_mult 6 --conj_cone_tolerance 1.8969679945890683 --demod_completeness_check fullold --demod_use_ground false --extra_neg_conj all_neg --instantiation_flag false --out_options none --preprocessed_out false --preprocessing_flag false --prolific_symb_bound 1024 --proof_out true --prop_solver_per_cl 512 --res_to_smt_solver false --resolution_flag true --schedule none --share_sel_clauses true --stats_out none --subs_bck_mult 16 --sup_bw_gjoin_interval 100 --sup_cache_sim none --sup_full_bw "[Subsumption;SubsumptionRes;UnitSubsAndRes]" --sup_full_fixpoint false --sup_full_fw "[]" --sup_fun_splitting false --sup_immed_bw_immed "[Subsumption;SubsumptionRes;UnitSubsAndRes]" --sup_immed_bw_main "[SubsumptionRes;UnitSubsAndRes;FullSubsAndRes;Demod;ACDemod]" --sup_immed_fixpoint false --sup_immed_fw_immed "[Subsumption;SubsumptionRes;FullSubsAndRes;Demod;LightNorm;ACDemod]" --sup_immed_fw_main "[Subsumption;UnitSubsAndRes;FullSubsAndRes;Demod;LightNorm;ACNormalisation;GroundJoinability;Connectedness]" --sup_immed_triv "[]" --sup_indices_passive "[]" --sup_input_fixpoint false --sup_main_fixpoint true --sup_ordering lpo --sup_passive_queue_type priority_queues --sup_passive_queues "[[+has_eq;-has_eq];[-num_var;-num_var];[+conj_dist;+ground;-max_atom_input_occur]]" --sup_passive_queues_freq "[1;4;4]" --sup_prop_simpl_given false --sup_prop_simpl_new false --sup_score sim_d_gen --sup_share_max_num_cl 10 --sup_share_score_frac 0.2 --sup_smt_interval 32 --sup_symb_ordering invfreq_arity --sup_term_weight default --sup_to_prop_solver passive --sup_unprocessed_bound 10 --superposition_flag true --suppress_sat_res true --tptp_safe_out true --sat_out_model pos --clausifier res/vclausify_rel --clausifier_options "--mode tclausify -t 3.67 --show_fool true" --time_out_real 11.00 /export/starexec/sandbox/benchmark/theBenchmark.p 1>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/7ezbx54l 2>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/7ezbx54l_error
% 1.53/1.28 ERROR - "ProverProcess:heur/vip_65097:3.0" ran with exit code 2 and error: iprover.ml: Unexpected exception: Failure("undefined enum value")
% 1.53/1.28 Fatal error: exception Failure("undefined enum value")
% 1.53/1.28 ERROR - cmd was: ulimit -v 4023281; ./res/iproveropt --comb_inst_mult 3 --comb_mode clause_based --comb_res_mult 3 --comb_sup_deep_mult 0 --comb_sup_mult 0 --conj_cone_tolerance 4.0357851670394345 --extra_neg_conj none --inst_activity_threshold 512 --inst_dismatching true --inst_eager_unprocessed_to_passive true --inst_eq_res_simp true --inst_learning_factor 2 --inst_learning_loop_flag true --inst_learning_start 2048 --inst_lit_activity_flag true --inst_lit_sel "[+split;-sign;-depth]" --inst_lit_sel_side none --inst_orphan_elimination true --inst_passive_queue_type queue --inst_passive_queues "[[+age;+num_lits;-age];[-age;-min_def_symb;+bc_imp_inh]]" --inst_passive_queues_freq "[2;2]" --inst_prop_sim_given true --inst_prop_sim_new false --inst_restr_to_given true --inst_sel_renew solver --inst_solver_calls_frac 1.0 --inst_solver_per_active 1024 --inst_sos_flag true --inst_sos_phase false --inst_sos_sth_lit_sel "[+split;-ground;-depth]" --inst_start_prop_sim_after_learn 3 --inst_subs_given true --inst_subs_new false --instantiation_flag true --out_options none --prep_sup_sim_all true --prep_sup_sim_sup false --preprocessed_out false --preprocessing_flag true --prolific_symb_bound 256 --proof_out true --prop_solver_per_cl 16384 --resolution_flag true --schedule none --share_sel_clauses false --stats_out none --subs_bck_mult 8 --suppress_sat_res true --tptp_safe_out true --sat_out_model pos --clausifier res/vclausify_rel --clausifier_options "--mode tclausify -t 1.00 --show_fool true" --time_out_real 3.00 /export/starexec/sandbox/benchmark/theBenchmark.p 1>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/qapvja01 2>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/qapvja01_error
% 1.53/1.28 ERROR - "ProverProcess:heur/vip_65080:40.0" ran with exit code 2 and error: iprover.ml: Unexpected exception: Failure("undefined enum value")
% 1.53/1.28 Fatal error: exception Failure("undefined enum value")
% 1.53/1.28 ERROR - cmd was: ulimit -v 4023281; ./res/iproveropt --comb_mode time_based --comb_res_mult 6 --comb_sup_deep_mult 4 --comb_sup_mult 6 --conj_cone_tolerance 1.895766803319499 --demod_completeness_check fullold --demod_use_ground false --extra_neg_conj all_pos_neg --instantiation_flag false --out_options none --preprocessed_out false --preprocessing_flag false --prolific_symb_bound 1024 --proof_out true --prop_solver_per_cl 128 --res_to_smt_solver false --resolution_flag true --schedule none --share_sel_clauses true --stats_out none --subs_bck_mult 16 --sup_bw_gjoin_interval 100 --sup_cache_sim none --sup_full_bw "[Subsumption;SubsumptionRes;UnitSubsAndRes]" --sup_full_fixpoint false --sup_full_fw "[]" --sup_fun_splitting false --sup_immed_bw_immed "[Subsumption;SubsumptionRes;UnitSubsAndRes]" --sup_immed_bw_main "[SubsumptionRes;UnitSubsAndRes;FullSubsAndRes;Demod;ACDemod]" --sup_immed_fixpoint false --sup_immed_fw_immed "[Subsumption;SubsumptionRes;FullSubsAndRes;Demod;LightNorm;ACDemod]" --sup_immed_fw_main "[Subsumption;UnitSubsAndRes;FullSubsAndRes;Demod;LightNorm;ACNormalisation;GroundJoinability;Connectedness]" --sup_immed_triv "[]" --sup_indices_passive "[]" --sup_input_fixpoint false --sup_iter_deepening 2 --sup_main_fixpoint true --sup_ordering lpo --sup_passive_queue_type priority_queues --sup_passive_queues "[[+has_eq;-has_eq];[-num_var;-num_var];[+conj_dist;+ground;-max_atom_input_occur]]" --sup_passive_queues_freq "[1;4;4]" --sup_prop_simpl_given false --sup_prop_simpl_new false --sup_restarts_mult 4 --sup_score sim_d_gen --sup_share_max_num_cl 10 --sup_share_score_frac 0.2 --sup_smt_interval 32 --sup_symb_ordering invfreq_arity --sup_term_weight default --sup_to_prop_solver passive --sup_unprocessed_bound 10 --superposition_flag true --suppress_sat_res true --tptp_safe_out true --sat_out_model pos --clausifier res/vclausify_rel --clausifier_options "--mode tclausify -t 13.33 --show_fool true" --time_out_real 40.00 /export/starexec/sandbox/benchmark/theBenchmark.p 1>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/vx8a0dkd 2>> /export/starexec/sandbox/tmp/iprover_out_4k85a0zf/vx8a0dkd_error
% 1.53/1.28 % SZS status Theorem for theBenchmark.p
% 1.53/1.28
% 1.53/1.28 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 1.53/1.28
% 1.53/1.28 % ------ iProver source info
% 1.53/1.28
% 1.53/1.28 % git: date: 2026-07-19 20:42:38 +0200
% 1.53/1.28 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 1.53/1.28 % git: non_committed_changes: false
% 1.53/1.28
% 1.53/1.28 % ------ Parsing...
% 1.53/1.28 % ------ Clausification by vclausify_rel & Parsing by iProver...
% 1.53/1.28 % ------ Proving...
% 1.53/1.28 % ------ Problem Properties
% 1.53/1.28
% 1.53/1.28 %
% 1.53/1.28 % clauses 32
% 1.53/1.28 % conjectures 2
% 1.53/1.28 % EPR 7
% 1.53/1.28 % Horn 27
% 1.53/1.28 % unary 20
% 1.53/1.28 % binary 8
% 1.53/1.28 % lits 48
% 1.53/1.28 % lits eq 25
% 1.53/1.28 % fd_pure 0
% 1.53/1.28 % fd_pseudo 0
% 1.53/1.28 % fd_cond 0
% 1.53/1.28 % fd_pseudo_cond 5
% 1.53/1.28 % AC symbols 1
% 1.53/1.28
% 1.53/1.28 % ------ Input Options Time Limit: Unbounded
% 1.53/1.28
% 1.53/1.28
% 1.53/1.28 % ------
% 1.53/1.28 % Current options:
% 1.53/1.28 % ------
% 1.53/1.28
% 1.53/1.28
% 1.53/1.28 %
% 1.53/1.28
% 1.53/1.28 % ------ Proving...
% 1.53/1.28 %
% 1.53/1.28
% 1.53/1.28 % SZS status Theorem for theBenchmark.p
% 1.53/1.28
% 1.53/1.28 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 1.53/1.28
% 1.53/1.28
%------------------------------------------------------------------------------