0.00/0.03 % Problem : theBenchmark.p : TPTP v0.0.0. Released v0.0.0. 0.00/0.03 % Command : run_vampire %s %d THM 0.09/0.43 % Computer : n014.cluster.edu 0.09/0.43 % Model : x86_64 x86_64 0.09/0.43 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz 0.09/0.43 % Memory : 8046.5625MB 0.09/0.43 % OS : Linux 6.8.0-71-generic 0.09/0.43 % CPULimit : 1440 0.09/0.43 % WCLimit : 180 0.09/0.43 % DateTime : Mon Jul 27 09:07:32 UTC 2026 0.09/0.43 % CPUTime : 0.16/0.47 This is a FOF_ problem 0.16/0.47 Running first-order theorem proving 0.16/0.47 Running /export/starexec/sandbox2/solver/bin/vampire --mode casc -m 16384 --cores 7 -t 180 /export/starexec/sandbox2/benchmark/theBenchmark.p 0.16/0.54 % (3452248)Running in auto input_syntax mode. Trying TPTP 0.16/0.54 % (3452253)lrs+1011_32_sil=2000:tgt=full:alpa=true:random_seed=2614776268:st=5:i=107:sd=1:ss=included:er=filter_1799 on theBenchmark for (1799ds/107Mi) 0.16/0.54 % (3452253)First to succeed. 0.16/0.54 % (3452253)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-3452248" 0.16/0.54 % (3452248)Running in auto input_syntax mode. Trying TPTP 0.16/0.54 % (3452253)Refutation found. Thanks to Tanya! 0.16/0.54 % SZS status Theorem for theBenchmark 0.16/0.54 % SZS output start Proof for theBenchmark 0.16/0.54 fof(f156,plain,( 0.16/0.54 $false), 0.16/0.54 inference(subsumption_resolution,[],[f155,f128])). 0.16/0.54 fof(f128,plain,( 0.16/0.54 end_point(sK9(sK0),sK0)), 0.16/0.54 inference(resolution,[],[f114,f87])). 0.16/0.54 fof(f87,plain,( 0.16/0.54 open(sK0)), 0.16/0.54 inference(cnf_transformation,[],[f57])). 0.16/0.54 fof(f57,plain,( 0.16/0.54 ! [X1,X2] : (X1 = X2 | ~end_point(X1,sK0) | ~end_point(X2,sK0)) & open(sK0)), 0.16/0.54 inference(skolemisation,[status(esa),new_symbols(skolem,[sK0])],[f35,f56])). 0.16/0.54 fof(f56,plain,( 0.16/0.54 ? [X0] : (! [X1,X2] : (X1 = X2 | ~end_point(X1,X0) | ~end_point(X2,X0)) & open(X0)) => (! [X2,X1] : (X1 = X2 | ~end_point(X1,sK0) | ~end_point(X2,sK0)) & open(sK0))), 0.16/0.54 introduced(definition,[],[choice_axiom])). 0.16/0.54 fof(f35,plain,( 0.16/0.54 ? [X0] : (! [X1,X2] : (X1 = X2 | ~end_point(X1,X0) | ~end_point(X2,X0)) & open(X0))), 0.16/0.54 inference(ennf_transformation,[],[f19])). 0.16/0.54 fof(f19,plain,( 0.16/0.54 ~! [X0] : (open(X0) => ? [X1,X2] : (X1 != X2 & end_point(X1,X0) & end_point(X2,X0)))), 0.16/0.54 inference(rectify,[],[f18])). 0.16/0.54 fof(f18,negated_conjecture,( 0.16/0.54 ~! [X0] : (open(X0) => ? [X4,X3] : (X3 != X4 & end_point(X4,X0) & end_point(X3,X0)))), 0.16/0.54 inference(negated_conjecture,[status(cth)],[f17])). 0.16/0.54 fof(f17,conjecture,( 0.16/0.54 ! [X0] : (open(X0) => ? [X4,X3] : (X3 != X4 & end_point(X4,X0) & end_point(X3,X0)))), 0.16/0.54 file('/export/starexec/sandbox2/benchmark/theBenchmark.p',unknown)). 0.16/0.54 fof(f114,plain,( 0.16/0.54 ( ! [X0] : (~open(X0) | end_point(sK9(X0),X0)) )), 0.16/0.54 inference(cnf_transformation,[],[f79])). 0.16/0.54 fof(f79,plain,( 0.16/0.54 ! [X0] : (end_point(sK9(X0),X0) | ~open(X0))), 0.16/0.54 inference(skolemisation,[status(esa),new_symbols(skolem,[sK9])],[f50,f78])). 0.16/0.54 fof(f78,plain,( 0.16/0.54 ! [X0] : (? [X1] : end_point(X1,X0) => end_point(sK9(X0),X0))), 0.16/0.54 introduced(definition,[],[choice_axiom])). 0.16/0.54 fof(f50,plain,( 0.16/0.54 ! [X0] : (? [X1] : end_point(X1,X0) | ~open(X0))), 0.16/0.54 inference(ennf_transformation,[],[f32])). 0.16/0.54 fof(f32,plain,( 0.16/0.54 ! [X0] : (open(X0) => ? [X1] : end_point(X1,X0))), 0.16/0.54 inference(unused_predicate_definition_removal,[],[f28])). 0.16/0.54 fof(f28,plain,( 0.16/0.54 ! [X0] : (? [X1] : end_point(X1,X0) <=> open(X0))), 0.16/0.54 inference(rectify,[],[f9])). 0.16/0.54 fof(f9,axiom,( 0.16/0.54 ! [X0] : (? [X4] : end_point(X4,X0) <=> open(X0))), 0.16/0.54 file('/export/starexec/sandbox2/benchmark/theBenchmark.p',unknown)). 0.16/0.54 fof(f155,plain,( 0.16/0.54 ~end_point(sK9(sK0),sK0)), 0.16/0.54 inference(trivial_inequality_removal,[],[f154])). 0.16/0.54 fof(f154,plain,( 0.16/0.54 sK9(sK0) != sK9(sK0) | ~end_point(sK9(sK0),sK0)), 0.16/0.54 inference(superposition,[],[f92,f133])). 0.16/0.54 fof(f133,plain,( 0.16/0.54 sK9(sK0) = sK3(sK0,sK9(sK0))), 0.16/0.54 inference(resolution,[],[f132,f129])). 0.16/0.54 fof(f129,plain,( 0.16/0.54 ( ! [X0] : (~end_point(X0,sK0) | sK9(sK0) = X0) )), 0.16/0.54 inference(resolution,[],[f128,f88])). 0.16/0.54 fof(f88,plain,( 0.16/0.54 ( ! [X2,X1] : (~end_point(X1,sK0) | X1 = X2 | ~end_point(X2,sK0)) )), 0.16/0.54 inference(cnf_transformation,[],[f57])). 0.16/0.54 fof(f132,plain,( 0.16/0.54 end_point(sK3(sK0,sK9(sK0)),sK0)), 0.16/0.54 inference(resolution,[],[f91,f128])). 0.16/0.54 fof(f91,plain,( 0.16/0.54 ( ! [X0,X1] : (~end_point(X1,X0) | end_point(sK3(X0,X1),X0)) )), 0.16/0.54 inference(cnf_transformation,[],[f61])). 0.16/0.54 fof(f61,plain,( 0.16/0.54 ! [X0,X1] : ((sK3(X0,X1) != X1 & end_point(sK3(X0,X1),X0)) | ~end_point(X1,X0))), 0.16/0.54 inference(skolemisation,[status(esa),new_symbols(skolem,[sK3])],[f37,f60])). 0.16/0.54 fof(f60,plain,( 0.16/0.54 ! [X0,X1] : (? [X2] : (X1 != X2 & end_point(X2,X0)) => (sK3(X0,X1) != X1 & end_point(sK3(X0,X1),X0)))), 0.16/0.54 introduced(definition,[],[choice_axiom])). 0.16/0.54 fof(f37,plain,( 0.16/0.54 ! [X0,X1] : (? [X2] : (X1 != X2 & end_point(X2,X0)) | ~end_point(X1,X0))), 0.16/0.54 inference(ennf_transformation,[],[f21])). 0.16/0.54 fof(f21,plain,( 0.16/0.54 ! [X0,X1] : (end_point(X1,X0) => ? [X2] : (X1 != X2 & end_point(X2,X0)))), 0.16/0.54 inference(rectify,[],[f13])). 0.16/0.54 fof(f13,axiom,( 0.16/0.54 ! [X0,X4] : (end_point(X4,X0) => ? [X3] : (X3 != X4 & end_point(X3,X0)))), 0.16/0.54 file('/export/starexec/sandbox2/benchmark/theBenchmark.p',unknown)). 0.16/0.54 fof(f92,plain,( 0.16/0.54 ( ! [X0,X1] : (sK3(X0,X1) != X1 | ~end_point(X1,X0)) )), 0.16/0.54 inference(cnf_transformation,[],[f61])). 0.16/0.54 % SZS output end Proof for theBenchmark 0.16/0.54 % (3452253)------------------------------ 0.16/0.54 % (3452253)Version: Vampire 5.0.0 (Release build, commit 3ce9b74f2 on 2025-07-14 12:22:21 +0200) 0.16/0.54 % (3452253)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c 0.16/0.54 % (3452253)Termination reason: Refutation 0.16/0.54 0.16/0.54 % (3452253)Time elapsed: 0.002 s 0.16/0.54 % (3452253)Peak memory usage: 12 MB 0.16/0.54 % (3452253)Instructions burned: 4 (million) 0.16/0.54 % (3452253)------------------------------ 0.16/0.54 % (3452253)------------------------------ 0.16/0.54 % (3452248)Success in time 0.059 s 0.16/0.54 EOF