| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 12 of 68 | 82% | 2 of 6 | 67% | 2 | 6 | 2 | 13 | 0 | 3 |
| SubtractExpression(ModelFactoryIF, Expression, Expression) | | 71% | | 67% | 2 | 4 | 2 | 11 | 0 | 1 |
| toString() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| atomString() | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |