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-(benchmark eq_diamond23
-:source{
-Generating minimum transitivity constraints in P-time for deciding Equality Logic,
-Ofer Strichman and Mirron Rozanov,
-SMT Workshop 2005.
-
-Translator: Leonardo de Moura. }
-:status unsat
-:category { crafted }
-:logic QF_UF
-:difficulty { 2 }
-:extrafuns ((x0 U) (y0 U) (z0 U)
-(x1 U) (y1 U) (z1 U)
-(x2 U) (y2 U) (z2 U)
-(x3 U) (y3 U) (z3 U)
-(x4 U) (y4 U) (z4 U)
-(x5 U) (y5 U) (z5 U)
-(x6 U) (y6 U) (z6 U)
-(x7 U) (y7 U) (z7 U)
-(x8 U) (y8 U) (z8 U)
-(x9 U) (y9 U) (z9 U)
-(x10 U) (y10 U) (z10 U)
-(x11 U) (y11 U) (z11 U)
-(x12 U) (y12 U) (z12 U)
-(x13 U) (y13 U) (z13 U)
-(x14 U) (y14 U) (z14 U)
-(x15 U) (y15 U) (z15 U)
-(x16 U) (y16 U) (z16 U)
-(x17 U) (y17 U) (z17 U)
-(x18 U) (y18 U) (z18 U)
-(x19 U) (y19 U) (z19 U)
-(x20 U) (y20 U) (z20 U)
-(x21 U) (y21 U) (z21 U)
-(x22 U) (y22 U) (z22 U)
-)
-:formula (and 
-(or (and (= x0 y0) (= y0 x1)) (and (= x0 z0) (= z0 x1)))
-(or (and (= x1 y1) (= y1 x2)) (and (= x1 z1) (= z1 x2)))
-(or (and (= x2 y2) (= y2 x3)) (and (= x2 z2) (= z2 x3)))
-(or (and (= x3 y3) (= y3 x4)) (and (= x3 z3) (= z3 x4)))
-(or (and (= x4 y4) (= y4 x5)) (and (= x4 z4) (= z4 x5)))
-(or (and (= x5 y5) (= y5 x6)) (and (= x5 z5) (= z5 x6)))
-(or (and (= x6 y6) (= y6 x7)) (and (= x6 z6) (= z6 x7)))
-(or (and (= x7 y7) (= y7 x8)) (and (= x7 z7) (= z7 x8)))
-(or (and (= x8 y8) (= y8 x9)) (and (= x8 z8) (= z8 x9)))
-(or (and (= x9 y9) (= y9 x10)) (and (= x9 z9) (= z9 x10)))
-(or (and (= x10 y10) (= y10 x11)) (and (= x10 z10) (= z10 x11)))
-(or (and (= x11 y11) (= y11 x12)) (and (= x11 z11) (= z11 x12)))
-(or (and (= x12 y12) (= y12 x13)) (and (= x12 z12) (= z12 x13)))
-(or (and (= x13 y13) (= y13 x14)) (and (= x13 z13) (= z13 x14)))
-(or (and (= x14 y14) (= y14 x15)) (and (= x14 z14) (= z14 x15)))
-(or (and (= x15 y15) (= y15 x16)) (and (= x15 z15) (= z15 x16)))
-(or (and (= x16 y16) (= y16 x17)) (and (= x16 z16) (= z16 x17)))
-(or (and (= x17 y17) (= y17 x18)) (and (= x17 z17) (= z17 x18)))
-(or (and (= x18 y18) (= y18 x19)) (and (= x18 z18) (= z18 x19)))
-(or (and (= x19 y19) (= y19 x20)) (and (= x19 z19) (= z19 x20)))
-(or (and (= x20 y20) (= y20 x21)) (and (= x20 z20) (= z20 x21)))
-(or (and (= x21 y21) (= y21 x22)) (and (= x21 z21) (= z21 x22)))
-(not (= x0 x22))))