CHOICE-STRATEGY-IS: ANCESTRY∧SUPPORT[THM]∧EQUALITY[=,3]; EDIT-STRATEGY-IS: DEMOD[4,3,2,1;4]∧(DEPTH[3]∨LENGTH[1]); ELAPSED-TIME =1734 NIL 1 2 1 (x ⊗(y ⊗ z))=(z ⊗(y ⊗ x));G3 2 ¬((THM2 ⊗ THM1)⊗(THM3 ⊗ THM1))=(THM2 ⊗ THM3);THM