%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : DAT333_3 : TPTP v9.3.1. Released v8.2.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n017.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 01:14:15 PM UTC 2026
% Result : Theorem 0.44s 1.29s
% Output : CNFRefutation 0.44s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : DAT333_3 : TPTP v9.3.1. Released v8.2.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.11/0.37 % Computer : n017.cluster.edu
% 0.11/0.37 % Model : x86_64 x86_64
% 0.11/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37 % Memory : 8046.5625MB
% 0.11/0.37 % OS : Linux 6.8.0-71-generic
% 0.11/0.38 % CPULimit : 300
% 0.11/0.38 % WCLimit : 300
% 0.11/0.38 % DateTime : Fri Sep 25 10:26:17 UTC 2026
% 0.11/0.38 % CPUTime :
% 0.11/0.38 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.11/0.42 Running first-order theorem proving
% 0.11/0.42 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.11/0.43
% 0.11/0.43 % ======== iProver multi-core TPTP/SMT =========
% 0.11/0.43
% 0.11/0.43 % Detected problem language: tptp
% 0.11/0.44 % Proving...
% 0.44/1.29 % SZS status Started for theBenchmark.p
% 0.44/1.29 % SZS status Theorem for theBenchmark.p
% 0.44/1.29
% 0.44/1.29 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 0.44/1.29
% 0.44/1.29 % ------ iProver source info
% 0.44/1.29
% 0.44/1.29 % git: date: 2026-07-19 20:42:38 +0200
% 0.44/1.29 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 0.44/1.29 % git: non_committed_changes: false
% 0.44/1.29
% 0.44/1.29 % ------ Parsing...
% 0.44/1.29 % ------ Clausification by vclausify_rel & Parsing by iProver...% ------ preprocesses with Global Options Modified: tff_prep: switching off prep_sem_filter, sub_typing, pure_diseq_elim
% 0.44/1.29 %
% 0.44/1.29
% 0.44/1.29 % ------ Preprocessing... pe_s pe:1:0s%
% 0.44/1.29
% 0.44/1.29 % SZS status Theorem for theBenchmark.p
% 0.44/1.29
% 0.44/1.29 % SZS output start CNFRefutation for theBenchmark.p
% 0.44/1.29
% 0.44/1.29 tff(func_def_0, type, '$ki_local_world': '$ki_world').
% 0.44/1.29 tff(pred_def_1, type, '$ki_accessible': ('$ki_world' * '$ki_world') > $o).
% 0.44/1.29 tff(pred_def_2, type, teach: ('$ki_world' * $i * $i) > $o).
% 0.44/1.29 tff(pred_def_3, type, '$ki_exists_in_world_$i': ('$ki_world' * $i) > $o).
% 0.44/1.29 tff(type_def_5, type, '$ki_world': $tType).
% 0.44/1.29 tff(func_def_7, type, sK0: '$ki_world' > '$ki_world').
% 0.44/1.29 tff(func_def_8, type, sK1: '$ki_world' > $i).
% 0.44/1.29 tff(func_def_9, type, sK2: '$ki_world' > $i).
% 0.44/1.29 tff(func_def_10, type, sK3: $i > '$ki_world').
% 0.44/1.29 tff(f2,axiom,(
% 0.44/1.29 ! [X0 : '$ki_world',X1 : $i] : '$ki_exists_in_world_$i'(X0,X1)),
% 0.44/1.29 file('/export/starexec/sandbox/benchmark/theBenchmark.p','$ki_exists_in_world_$i_const')).
% 0.44/1.29
% 0.44/1.29 tff(f4,axiom,(
% 0.44/1.29 ! [X0 : '$ki_world'] : ('$ki_accessible'('$ki_local_world',X0) => (teach(X0,john,math) & ? [X1 : $i] : ('$ki_exists_in_world_$i'(X0,X1) & teach(X0,X1,cs)) & teach(X0,mary,psych) & teach(X0,sue,psych)))),
% 0.44/1.29 file('/export/starexec/sandbox/benchmark/theBenchmark.p',db)).
% 0.44/1.29
% 0.44/1.29 tff(f5,conjecture,(
% 0.44/1.29 ? [X0 : $i] : ('$ki_exists_in_world_$i'('$ki_local_world',X0) & ! [X1 : '$ki_world'] : ('$ki_accessible'('$ki_local_world',X1) => teach(X1,john,X0)))),
% 0.44/1.29 file('/export/starexec/sandbox/benchmark/theBenchmark.p',verify)).
% 0.44/1.29
% 0.44/1.29 tff(f6,negated_conjecture,(
% 0.44/1.29 ~ ? [X0 : $i] : ('$ki_exists_in_world_$i'('$ki_local_world',X0) & ! [X1 : '$ki_world'] : ('$ki_accessible'('$ki_local_world',X1) => teach(X1,john,X0)))),
% 0.44/1.29 inference(negated_conjecture,[status(cth)],[f5])).
% 0.44/1.29
% 0.44/1.29 tff(f7,plain,(
% 0.44/1.29 ! [X0 : '$ki_world'] : ((teach(X0,john,math) & ? [X1 : $i] : ('$ki_exists_in_world_$i'(X0,X1) & teach(X0,X1,cs)) & teach(X0,mary,psych) & teach(X0,sue,psych)) | ~'$ki_accessible'('$ki_local_world',X0))),
% 0.44/1.29 inference(ennf_transformation,[],[f4])).
% 0.44/1.29
% 0.44/1.29 tff(f8,plain,(
% 0.44/1.29 ! [X0 : $i] : (~'$ki_exists_in_world_$i'('$ki_local_world',X0) | ? [X1 : '$ki_world'] : (~teach(X1,john,X0) & '$ki_accessible'('$ki_local_world',X1)))),
% 0.44/1.29 inference(ennf_transformation,[],[f6])).
% 0.44/1.29
% 0.44/1.29 tff(f11,plain,(
% 0.44/1.29 ! [X0 : '$ki_world'] : ((teach(X0,john,math) & ('$ki_exists_in_world_$i'(X0,sK2(X0)) & teach(X0,sK2(X0),cs)) & teach(X0,mary,psych) & teach(X0,sue,psych)) | ~'$ki_accessible'('$ki_local_world',X0))),
% 0.44/1.29 inference(skolemize,[status(esa),new_symbols(skolem,[sK2]),skolemize(X1,sK2(X0))],[f7])).
% 0.44/1.29
% 0.44/1.29 tff(f12,plain,(
% 0.44/1.29 ! [X0 : $i] : (~'$ki_exists_in_world_$i'('$ki_local_world',X0) | (~teach(sK3(X0),john,X0) & '$ki_accessible'('$ki_local_world',sK3(X0))))),
% 0.44/1.29 inference(skolemize,[status(esa),new_symbols(skolem,[sK3]),skolemize(X1,sK3(X0))],[f8])).
% 0.44/1.29
% 0.44/1.29 tff(f14,plain,(
% 0.44/1.29 ( ! [X0 : '$ki_world',X1 : $i] : ('$ki_exists_in_world_$i'(X0,X1)) )),
% 0.44/1.29 inference(cnf_transformation,[],[f2])).
% 0.44/1.29
% 0.44/1.29 tff(f20,plain,(
% 0.44/1.29 ( ! [X0 : '$ki_world'] : (teach(X0,john,math) | ~'$ki_accessible'('$ki_local_world',X0)) )),
% 0.44/1.29 inference(cnf_transformation,[],[f11])).
% 0.44/1.29
% 0.44/1.29 tff(f21,plain,(
% 0.44/1.29 ( ! [X0 : $i] : (~'$ki_exists_in_world_$i'('$ki_local_world',X0) | '$ki_accessible'('$ki_local_world',sK3(X0))) )),
% 0.44/1.29 inference(cnf_transformation,[],[f12])).
% 0.44/1.29
% 0.44/1.29 tff(f22,plain,(
% 0.44/1.29 ( ! [X0 : $i] : (~'$ki_exists_in_world_$i'('$ki_local_world',X0) | ~teach(sK3(X0),john,X0)) )),
% 0.44/1.29 inference(cnf_transformation,[],[f12])).
% 0.44/1.29
% 0.44/1.29 tcf(c_50,plain,![X0:$i,X0_'ki_world':'$ki_world']:
% 0.44/1.29 ('$ki_exists_in_world(X0_'ki_world',X0)),
% 0.44/1.29 inference(cnf_transformation,[],[f14])).
% 0.44/1.29
% 0.44/1.29 tcf(c_52,plain,![X0_'ki_world':'$ki_world']:
% 0.44/1.29 (~'$ki_accessible'('$ki_local_world',X0_'ki_world')|teach(X0_'ki_world',john,math)),
% 0.44/1.29 inference(cnf_transformation,[],[f20])).
% 0.44/1.29
% 0.44/1.29 tcf(c_57,negated_conjecture,![X0:$i]:
% 0.44/1.29 (~teach(sK3(X0),john,X0)|~'$ki_exists_in_world('$ki_local_world',X0)),
% 0.44/1.29 inference(cnf_transformation,[],[f22])).
% 0.44/1.29
% 0.44/1.29 tcf(c_58,negated_conjecture,![X0:$i]:
% 0.44/1.29 (~'$ki_exists_in_world('$ki_local_world',X0)|'$ki_accessible'('$ki_local_world',sK3(X0))),
% 0.44/1.29 inference(cnf_transformation,[],[f21])).
% 0.44/1.29
% 0.44/1.29 tcf(c_71,plain,![X0:$i]:
% 0.44/1.29 ('$ki_accessible'('$ki_local_world',sK3(X0))),
% 0.44/1.29 inference(backward_subsumption_resolution,[status(thm)],[c_58,c_50])).
% 0.44/1.29
% 0.44/1.29 tcf(c_72,plain,![X0:$i]:
% 0.44/1.29 (~teach(sK3(X0),john,X0)),
% 0.44/1.29 inference(backward_subsumption_resolution,[status(thm)],[c_57,c_50])).
% 0.44/1.29
% 0.44/1.29 tcf(c_97,plain,
% 0.44/1.29 (~'$ki_accessible'('$ki_local_world',sK3(math))),
% 0.44/1.29 inference(resolution,[status(thm)],[c_52,c_72])).
% 0.44/1.29
% 0.44/1.29 tcf(c_100,plain,
% 0.44/1.29 ($false),
% 0.44/1.29 inference(forward_subsumption_resolution,[status(thm)],[c_97,c_71])).
% 0.44/1.29
% 0.44/1.29
% 0.44/1.29 % SZS output end CNFRefutation for theBenchmark.p
% 0.44/1.29
% 0.44/1.29
%------------------------------------------------------------------------------