message: Forgot to re-transpose the matrix for validation
diff: @@ -261,6 +261,7 @@ void MergeTwoQubitBlockOptimizer::apply(std::shared_ptr<CompositeInstruction> pr
  // Optimized decomposed sequence:
  const auto nbInstructionsAfter = kak->nInstructions();
  + uMat.transposeInPlace();
  // A simplified sequence was found.
  if (nbInstructionsAfter < sequence.size() && compareMatIgnoreGlobalPhase(uMat, calcUopt(kak)))
  {
  