CVC4 is the latest version of the Cooperating Validity Checker. A joint project of NYU and U Iowa, CVC4 aims to support the useful feature set of CVC3 and SMT-LIBv2 while optimizing the design of the core system architecture and decision procedures to take advantage of recent engineering and algorithmic advances. CVC4 represents a completely new code base; it is a from-scratch rewrite of CVC3, and many subsystems have been completely redesigned. Additional decision procedures for CVC4 are currently under development, but for what it currently achieves, it is a lighter-weight and higher-performing tool than CVC3. We describe the system architecture, subsystems of note, and discuss some applications and continuing work.
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