  We present ShapeIt, a tool for mining specifications of cyber-physical
systems (CPS) from their real-valued behaviors. The learned specifications are
in the form of linear shape expressions, a declarative formal specification
language suitable to express behavioral properties over real-valued signals. A
linear shape expression is a regular expression composed of parameterized lines
as atomic symbols with symbolic constraints on the line parameters. We present
here the architecture of our tool along with the different steps of the
specification mining algorithm. We also describe the usage of the tool
demonstrating its applicability on several case studies from different
application domains.
