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Takeshi Tsukada

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titleconferencedate
Supermartingales for Unique Fixed Points: A Unified Approach to Lower Bound VerificationPLDI 20262026-06-15
Presents a concrete criterion that turns uniqueness of least fixed points into a usable lower-bound proof: existence of a U-ranking supermartingale plus a…
Talk on
Nola: Later-Free Ghost State for Verifying Termination in IrisPLDI 20252025-06-16
Nola presents a concrete method to remove Iris’s obstructive later modality by encoding shared state as syntactic SL formulas and giving them a separate…
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A Primal-Dual Perspective on Program Verification AlgorithmsPOPL 20252025-01-19
Presents a unified algorithmic framework that generalizes Lagrangians to discrete domains (powersets, predicates, ranking functions) and runs an abstract…
Talk
Inductive Approach to SpacerPLDI 20242024-06-24
Presents a Spacer-like CHC solver derived by structural induction that replaces global quantifier elimination with an iterative, lazy use of model-based…
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Quantum Controlled Measurements via Program TransformationPLanQC 20242024-01-20
Proposes a program transformation that defers measurements from inside quantum conditionals to the outside, turning programs with mid-circuit measurements into…
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Enriched Presheaf Model of Quantum FPCPOPL 20242024-01-14
Extends Selinger’s superoperator model to higher-order programs by building modules over superoperators (equivalently enriched presheaves) and carving a…
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Optimal CHC Solving via Termination ProofsPOPL 20232023-01-15
Presents a new optimality checker that reduces CHC maximality to program termination, encodes termination-argument synthesis (angelic strategy and…
Talk
HFL(Z) Validity Checking for Automated Program VerificationPOPL 20232023-01-15
Proposes an automated validity checker for HFL(Z) formulas that encodes higher-order program verification (termination, nontermination, fair variants…
Talk
A New Refinement Type System for Automated nu-HFLZ Validity CheckinSPLASH 20222022-12-05
A refinement type system targets validity checking for a fragment of vHFLZ (no least fixpoints) and produces template-based constraints that are solved to…
Talk
Termination Analysis for the pi-Calculus by Reduction to Sequential Program TerminationSPLASH 20222022-12-05
Proposes an automated reduction that translates pi-calculus processes into sequential C programs so termination of the C program implies termination of the…
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Software Model-Checking as Cyclic-Proof SearchSPLASH 20222022-12-05
Claims that many software model-checking procedures are just proof-search strategies for a cyclic proof system and gives a worked mapping: symbolic execution…
Talk
Software Model-Checking as Cyclic-Proof SearchPOPL 20222022-01-16
Claims that many software model-checking algorithms are exactly proof-search strategies for a cyclic proof system, so a single logical framework reconstructs…
Talk
Termination Analysis for the \$\pi\$-Calculus by Reduction to Sequential Program TerminationAPLAS 20212021-10-17
Proposes an automated reduction that translates π-calculus to C so termination of the sequential program implies termination of the original process, and…
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Coq to C Translation with Partial Evaluation + Counterexample GenerationPEPM 20212021-01-18
Builds a verified Coq-to-C code generator that uses a custom codogen plugin and a partial-evaluation pipeline to monomorphize polymorphic/dependent functions…
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Predicate Abstraction and CEGAR for nuHFL(Z) Validity CheckingSAS 20202020-11-18
Proposes an algorithm that combines νHFL(ℤ) predicate abstraction with predicate abstraction and CEGAR to decide higher‑order CHC/νHFL(ℤ) validity, implements…
Talk
Signature restriction for polymorphic algebraic effectsICFP 20202020-08-23
Proposes signature restriction on effect interfaces: require each bound type variable to occur only strictly positively in argument positions and only…
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