4.51/1.97 YES 4.73/1.98 proof of /export/starexec/sandbox/benchmark/theBenchmark.c 4.73/1.98 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 4.73/1.98 4.73/1.98 4.73/1.98 Termination of the given C Problem could be proven: 4.73/1.98 4.73/1.98 (0) C Problem 4.73/1.98 (1) CToIRSProof [EQUIVALENT, 0 ms] 4.73/1.98 (2) IntTRS 4.73/1.98 (3) TerminationGraphProcessor [SOUND, 53 ms] 4.73/1.98 (4) IntTRS 4.73/1.98 (5) IntTRSCompressionProof [EQUIVALENT, 0 ms] 4.73/1.98 (6) IntTRS 4.73/1.98 (7) IntTRSUnneededArgumentFilterProof [EQUIVALENT, 0 ms] 4.73/1.98 (8) IntTRS 4.73/1.98 (9) RankingReductionPairProof [EQUIVALENT, 11 ms] 4.73/1.98 (10) YES 4.73/1.98 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (0) 4.73/1.98 Obligation: 4.73/1.98 c file /export/starexec/sandbox/benchmark/theBenchmark.c 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (1) CToIRSProof (EQUIVALENT) 4.73/1.98 Parsed C Integer Program as IRS. 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (2) 4.73/1.98 Obligation: 4.73/1.98 Rules: 4.73/1.98 f1(x, y, r) -> f2(x_1, y, r) :|: TRUE 4.73/1.98 f2(x1, x2, x3) -> f3(x1, x4, x3) :|: TRUE 4.73/1.98 f3(x5, x6, x7) -> f4(x5, x6, 1) :|: TRUE 4.73/1.98 f5(x8, x9, x10) -> f6(x8, x9, arith) :|: TRUE && arith = x10 * x8 4.73/1.98 f6(x23, x24, x25) -> f7(x23, x26, x25) :|: TRUE && x26 = x24 - 1 4.73/1.98 f4(x14, x15, x16) -> f5(x14, x15, x16) :|: x15 > 0 4.73/1.98 f7(x17, x18, x19) -> f4(x17, x18, x19) :|: TRUE 4.73/1.98 f4(x20, x21, x22) -> f8(x20, x21, x22) :|: x21 <= 0 4.73/1.98 Start term: f1(x, y, r) 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (3) TerminationGraphProcessor (SOUND) 4.73/1.98 Constructed the termination graph and obtained one non-trivial SCC. 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (4) 4.73/1.98 Obligation: 4.73/1.98 Rules: 4.73/1.98 f4(x14, x15, x16) -> f5(x14, x15, x16) :|: x15 > 0 4.73/1.98 f7(x17, x18, x19) -> f4(x17, x18, x19) :|: TRUE 4.73/1.98 f6(x23, x24, x25) -> f7(x23, x26, x25) :|: TRUE && x26 = x24 - 1 4.73/1.98 f5(x8, x9, x10) -> f6(x8, x9, arith) :|: TRUE && arith = x10 * x8 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (5) IntTRSCompressionProof (EQUIVALENT) 4.73/1.98 Compressed rules. 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (6) 4.73/1.98 Obligation: 4.73/1.98 Rules: 4.73/1.98 f6(x23:0, x24:0, x25:0) -> f6(x23:0, x24:0 - 1, x25:0 * x23:0) :|: x24:0 > 1 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (7) IntTRSUnneededArgumentFilterProof (EQUIVALENT) 4.73/1.98 Some arguments are removed because they cannot influence termination. We removed arguments according to the following replacements: 4.73/1.98 4.73/1.98 f6(x1, x2, x3) -> f6(x2) 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (8) 4.73/1.98 Obligation: 4.73/1.98 Rules: 4.73/1.98 f6(x24:0) -> f6(x24:0 - 1) :|: x24:0 > 1 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (9) RankingReductionPairProof (EQUIVALENT) 4.73/1.98 Interpretation: 4.73/1.98 [ f6 ] = f6_1 4.73/1.98 4.73/1.98 The following rules are decreasing: 4.73/1.98 f6(x24:0) -> f6(x24:0 - 1) :|: x24:0 > 1 4.73/1.98 4.73/1.98 The following rules are bounded: 4.73/1.98 f6(x24:0) -> f6(x24:0 - 1) :|: x24:0 > 1 4.73/1.98 4.73/1.98 4.73/1.98 ---------------------------------------- 4.73/1.98 4.73/1.98 (10) 4.73/1.98 YES 4.73/2.02 EOF