First-Order Form Results

Salient Systems

• Vampire 4.6 dominated
  • Unexpected improved performance
  • New features not for FOF, but affected strategy timing
• iProver and CSE_E in a tight battle, separated by FEQ
  • iProver 3.5 improved: superposition, AC, learned heuristics
• No proof output from RPx ... but is it necessary?

Performance Measures

• Vampire did well in all measures
• Twee, Drodi (a new system), iProver used the most cores
• New problems helped separation

Portfolio Possibilities

• 10 problems unsolved, 2 all solved
• 39 unique solutions, 24 by Vampire
• Portfolio would not help much