/export/starexec/sandbox2/solver/bin/starexec_run_standard /export/starexec/sandbox2/benchmark/theBenchmark.jar /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES proof of /export/starexec/sandbox2/benchmark/theBenchmark.jar # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty termination of the given Bare JBC problem could be proven: (0) Bare JBC problem (1) BareJBCToJBCProof [EQUIVALENT, 96 ms] (2) JBC problem (3) JBCToGraph [EQUIVALENT, 230 ms] (4) JBCTerminationGraph (5) TerminationGraphToSCCProof [SOUND, 0 ms] (6) JBCTerminationSCC (7) SCCToIRSProof [SOUND, 74 ms] (8) IRSwT (9) IRSFormatTransformerProof [EQUIVALENT, 0 ms] (10) IRSwT (11) IRSwTTerminationDigraphProof [EQUIVALENT, 0 ms] (12) IRSwT (13) IntTRSCompressionProof [EQUIVALENT, 0 ms] (14) IRSwT (15) TempFilterProof [SOUND, 24 ms] (16) IntTRS (17) PolynomialOrderProcessor [EQUIVALENT, 1 ms] (18) YES ---------------------------------------- (0) Obligation: need to prove termination of the following program: package simple.whileDecr; public class Main { /** * @param args */ public static void main(String[] args) { WhileDecr.decrease(args.length); } } package simple.whileDecr; public class WhileDecr { // this example does acutally terminate. public static void decrease(int i) { while (i > 5) { i--; } } } ---------------------------------------- (1) BareJBCToJBCProof (EQUIVALENT) initialized classpath ---------------------------------------- (2) Obligation: need to prove termination of the following program: package simple.whileDecr; public class Main { /** * @param args */ public static void main(String[] args) { WhileDecr.decrease(args.length); } } package simple.whileDecr; public class WhileDecr { // this example does acutally terminate. public static void decrease(int i) { while (i > 5) { i--; } } } ---------------------------------------- (3) JBCToGraph (EQUIVALENT) Constructed TerminationGraph. ---------------------------------------- (4) Obligation: Termination Graph based on JBC Program: simple.whileDecr.Main.main([Ljava/lang/String;)V: Graph of 16 nodes with 1 SCC. ---------------------------------------- (5) TerminationGraphToSCCProof (SOUND) Splitted TerminationGraph to 1 SCCs. ---------------------------------------- (6) Obligation: SCC of termination graph based on JBC Program. SCC contains nodes from the following methods: simple.whileDecr.Main.main([Ljava/lang/String;)V SCC calls the following helper methods: Performed SCC analyses: *Used field analysis yielded the following read fields: *Marker field analysis yielded the following relations that could be markers: ---------------------------------------- (7) SCCToIRSProof (SOUND) Transformed FIGraph SCCs to intTRSs. Log: Generated rules. Obtained 7 IRulesP rules: f47_0_decrease_ConstantStackPush(EOS(STATIC_47), i14, i14) -> f48_0_decrease_LE(EOS(STATIC_48), i14, i14, 5) :|: TRUE f48_0_decrease_LE(EOS(STATIC_48), i23, i23, matching1) -> f57_0_decrease_LE(EOS(STATIC_57), i23, i23, 5) :|: TRUE && matching1 = 5 f57_0_decrease_LE(EOS(STATIC_57), i23, i23, matching1) -> f65_0_decrease_Inc(EOS(STATIC_65), i23) :|: i23 > 5 && matching1 = 5 f65_0_decrease_Inc(EOS(STATIC_65), i23) -> f71_0_decrease_JMP(EOS(STATIC_71), i23 + -1) :|: TRUE f71_0_decrease_JMP(EOS(STATIC_71), i27) -> f82_0_decrease_Load(EOS(STATIC_82), i27) :|: TRUE f82_0_decrease_Load(EOS(STATIC_82), i27) -> f46_0_decrease_Load(EOS(STATIC_46), i27) :|: TRUE f46_0_decrease_Load(EOS(STATIC_46), i14) -> f47_0_decrease_ConstantStackPush(EOS(STATIC_47), i14, i14) :|: TRUE Combined rules. Obtained 1 IRulesP rules: f47_0_decrease_ConstantStackPush(EOS(STATIC_47), i14:0, i14:0) -> f47_0_decrease_ConstantStackPush(EOS(STATIC_47), i14:0 - 1, i14:0 - 1) :|: i14:0 > 5 Filtered constant ground arguments: f47_0_decrease_ConstantStackPush(x1, x2, x3) -> f47_0_decrease_ConstantStackPush(x2, x3) EOS(x1) -> EOS Filtered duplicate arguments: f47_0_decrease_ConstantStackPush(x1, x2) -> f47_0_decrease_ConstantStackPush(x2) Finished conversion. Obtained 1 rules.P rules: f47_0_decrease_ConstantStackPush(i14:0) -> f47_0_decrease_ConstantStackPush(i14:0 - 1) :|: i14:0 > 5 ---------------------------------------- (8) Obligation: Rules: f47_0_decrease_ConstantStackPush(i14:0) -> f47_0_decrease_ConstantStackPush(i14:0 - 1) :|: i14:0 > 5 ---------------------------------------- (9) IRSFormatTransformerProof (EQUIVALENT) Reformatted IRS to match normalized format (transformed away non-linear left-hand sides, !=, / and %). ---------------------------------------- (10) Obligation: Rules: f47_0_decrease_ConstantStackPush(i14:0) -> f47_0_decrease_ConstantStackPush(arith) :|: i14:0 > 5 && arith = i14:0 - 1 ---------------------------------------- (11) IRSwTTerminationDigraphProof (EQUIVALENT) Constructed termination digraph! Nodes: (1) f47_0_decrease_ConstantStackPush(i14:0) -> f47_0_decrease_ConstantStackPush(arith) :|: i14:0 > 5 && arith = i14:0 - 1 Arcs: (1) -> (1) This digraph is fully evaluated! ---------------------------------------- (12) Obligation: Termination digraph: Nodes: (1) f47_0_decrease_ConstantStackPush(i14:0) -> f47_0_decrease_ConstantStackPush(arith) :|: i14:0 > 5 && arith = i14:0 - 1 Arcs: (1) -> (1) This digraph is fully evaluated! ---------------------------------------- (13) IntTRSCompressionProof (EQUIVALENT) Compressed rules. ---------------------------------------- (14) Obligation: Rules: f47_0_decrease_ConstantStackPush(i14:0:0) -> f47_0_decrease_ConstantStackPush(i14:0:0 - 1) :|: i14:0:0 > 5 ---------------------------------------- (15) TempFilterProof (SOUND) Used the following sort dictionary for filtering: f47_0_decrease_ConstantStackPush(INTEGER) Replaced non-predefined constructor symbols by 0. ---------------------------------------- (16) Obligation: Rules: f47_0_decrease_ConstantStackPush(i14:0:0) -> f47_0_decrease_ConstantStackPush(c) :|: c = i14:0:0 - 1 && i14:0:0 > 5 ---------------------------------------- (17) PolynomialOrderProcessor (EQUIVALENT) Found the following polynomial interpretation: [f47_0_decrease_ConstantStackPush(x)] = x The following rules are decreasing: f47_0_decrease_ConstantStackPush(i14:0:0) -> f47_0_decrease_ConstantStackPush(c) :|: c = i14:0:0 - 1 && i14:0:0 > 5 The following rules are bounded: f47_0_decrease_ConstantStackPush(i14:0:0) -> f47_0_decrease_ConstantStackPush(c) :|: c = i14:0:0 - 1 && i14:0:0 > 5 ---------------------------------------- (18) YES