#!/usr/bin/php Checking equalitysymmetric.prf Proof checked OK. 2 inferences. That makes 1 proofs. Checking inequalitysymmetric.prf Proof checked OK. 2 inferences. That makes 2 proofs. Checking congruencesymmetric.prf Proof checked OK. 2 inferences. That makes 3 proofs. Checking congruencetransitive.prf Proof checked OK. 2 inferences. That makes 4 proofs. Checking nullsegment3.prf Proof checked OK. 3 inferences. That makes 5 proofs. Checking 3.6a.prf Proof checked OK. 4 inferences. That makes 6 proofs. Checking betweennotequal.prf Proof checked OK. 11 inferences. That makes 7 proofs. Checking extensionunique.prf Can't look up axiom:nocollapse in axiom