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Proof step 1 from proof two-sub-01 (conclusion)

⊦ 2 * i0 + j - i0 + j0 = i0 + j - j0

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: numeq-03: ⊦ (* i2) * i = i + j0 ↔ (i2 - 1) * i = j0;%one: ⊦ 1 * i = i;%associativity: ⊦ i * j * j0 = (i * j) * j0;%commutativity: ⊦ i * j = j * i;% ⊦ i + j = i + i0 ↔ j = i0; (s)%add-c: ⊦ i + j = j + i; from specification int-basic2%add-a: ⊦ i + j + i0 = (i + j) + i0; from specification int-basic2% ⊦ i + (j - i) = j; (s)% ⊦ i - j = i0 ↔ i = i0 + j; (s)