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Mace4 (32) version June-2007, June 2007.
Process 13253 was started by mccune on cleo,
Thu Jun 14 10:32:40 2007
The command was "/home/mccune/bin/mace4 -c -f x2.in".
]]></heading>

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formulas(sos).
(x * y) * z = x * (y * z).
x * e = x.
x * x' = e.
end_of_list.

formulas(goals).
x * y = y * x.
end_of_list.
]]></input>

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