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  • A fault is a static defect in the software. <bib>ammann-offutt:2008</bib>, <bib>delamaro:slides:2009</bib>
  • A fault is the manifestation of one or more errors. <bib>mathur:2008</bib>


  • Faults are the result of the software complexity, new application domains, absence of methods, unpredictable situations and human mistake. <bib>delamaro:slides:2009</bib>
  • Faults detected later have a higher correction cost. <bib>vincenzi-etal:2007</bib>
  • A fault is commonly called error, bug or defect. <bib>vincenzi-etal:2007</bib>, <bib>mathur:2008</bib>
  • A fault that causes an error and the executed path does not correspond to the expected path is classified as a domain fault. <bib>vincenzi-etal:2007</bib>
  • Data sensitive faults can be detected only by test cases with specific input values. <bib>vincenzi-etal:2007</bib>
  • Data insensitive faults are detected by any test case, regardless of the actual input value. <bib>vincenzi-etal:2007</bib>
  • The execution of a fault produces an error. <bib>vincenzi-etal:slides:2007</bib>
  • For a given fault, not all inputs will trigger the fault into creating incorrect output (a failure). <bib>ammann-offutt:2008</bib>