NO proof of /export/starexec/sandbox/benchmark/theBenchmark.c # AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Termination of the given C Problem could be disproven: (0) C Problem (1) CToLLVMProof [EQUIVALENT, 163 ms] (2) LLVM problem (3) LLVMToTerminationGraphProof [EQUIVALENT, 1204 ms] (4) LLVM Symbolic Execution Graph (5) SymbolicExecutionGraphToLassoProof [EQUIVALENT, 0 ms] (6) LLVM Symbolic Execution Lasso (7) Lasso2IRS [EQUIVALENT, 71 ms] (8) IntTRS (9) IRS2T2 [EQUIVALENT, 0 ms] (10) T2IntSys (11) T2 [COMPLETE, 1272 ms] (12) NO ---------------------------------------- (0) Obligation: c file /export/starexec/sandbox/benchmark/theBenchmark.c ---------------------------------------- (1) CToLLVMProof (EQUIVALENT) Compiled c-file /export/starexec/sandbox/benchmark/theBenchmark.c to LLVM. ---------------------------------------- (2) Obligation: LLVM Problem Aliases: Data layout: "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" Machine: "x86_64-pc-linux-gnu" Type definitions: Global variables: Function declarations and definitions: *BasicFunctionTypename: "__VERIFIER_nondet_int" returnParam: i32 parameters: () variableLength: false visibilityType: DEFAULT callingConvention: ccc *BasicFunctionTypename: "main" linkageType: EXTERNALLY_VISIBLE returnParam: i32 parameters: () variableLength: false visibilityType: DEFAULT callingConvention: ccc 0: %1 = alloca i32, align 4 %a = alloca i32, align 4 %b = alloca i32, align 4 %c = alloca i32, align 4 %r = alloca i32, align 4 store 0, %1 %2 = call i32 @__VERIFIER_nondet_int() store %2, %a %3 = call i32 @__VERIFIER_nondet_int() store %3, %b %4 = call i32 @__VERIFIER_nondet_int() store %4, %c br %5 5: %6 = load %b %7 = load %c %8 = sub %6 %7 %9 = icmp sge %8 1 br %9, %10, %14 10: %11 = load %a %12 = load %c %13 = icmp eq %11 %12 br %14 14: %15 = phi [0, %5], [%13, %10] br %15, %16, %23 16: %17 = call i32 @__VERIFIER_nondet_int() store %17, %r store 10, %b %18 = load %c %19 = add %18 1 %20 = load %r %21 = add %19 %20 store %21, %c %22 = load %c store %22, %a br %5 23: ret 0 Analyze Termination of all function calls matching the pattern: main() ---------------------------------------- (3) LLVMToTerminationGraphProof (EQUIVALENT) Constructed symbolic execution graph for LLVM program and proved memory safety. ---------------------------------------- (4) Obligation: SE Graph ---------------------------------------- (5) SymbolicExecutionGraphToLassoProof (EQUIVALENT) Converted SEGraph to 1 independent lasso. ---------------------------------------- (6) Obligation: Lasso ---------------------------------------- (7) Lasso2IRS (EQUIVALENT) Transformed LLVM symbolic execution graph SCC into a rewrite problem. Log: Generated rules. Obtained 60 rulesP rules: f_183(v103, v104, v105, v106, v107, v108, v109, 10, v111, v112, 1, v114, v115, v116, v117, v118, v119, v120, v121, 0, 3, 4) -> f_184(v103, v104, v105, v106, v107, v108, v109, 10, v116, v112, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 4) :|: 0 = 0 f_184(v103, v104, v105, v106, v107, v108, v109, 10, v116, v112, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 4) -> f_185(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 4) :|: v124 + v116 = 10 f_185(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 4) -> f_186(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 1 <= v124 && v116 <= 9 f_186(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_188(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_188(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_190(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_190(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_192(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_192(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v111, v114, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_194(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_194(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_195(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_195(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_196(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_196(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_197(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_197(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v114, v111, v115, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_198(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v111, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_198(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v111, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_199(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v111, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_199(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v111, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_200(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v111, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_200(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v111, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_201(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_201(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v115, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_202(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: v178 = 1 + v116 && v178 <= 10 f_202(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v114, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_203(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_203(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_204(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: v179 = v178 + v176 f_204(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_205(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_205(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_206(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: 0 = 0 f_206(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_207(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_207(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_208(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) :|: TRUE f_208(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 3, 9, 4) -> f_182(v103, v104, v105, v106, v107, v108, v109, 10, v116, v124, 1, v176, v178, v179, v117, v118, v119, v120, v121, 0, 10, 3, 4) :|: TRUE f_182(v103, v104, v105, v106, v107, v108, v109, v110, v111, v112, 1, v114, v115, v116, v117, v118, v119, v120, v121, 0, 10, 3, 4) -> f_183(v103, v104, v105, v106, v107, v108, v109, 10, v111, v112, 1, v114, v115, v116, v117, v118, v119, v120, v121, 0, 3, 4) :|: 0 = 0 f_111 -> f_112(v1, v2, 3, 1, 4) :|: 1 <= v1 && v2 = 3 + v1 && 4 <= v2 f_112(v1, v2, 3, 1, 4) -> f_113(v1, v3, v2, v4, 3, 1, 4) :|: 1 <= v3 && v4 = 3 + v3 && 4 <= v4 f_113(v1, v3, v2, v4, 3, 1, 4) -> f_114(v1, v3, v5, v2, v4, v6, 3, 1, 4) :|: 1 <= v5 && v6 = 3 + v5 && 4 <= v6 f_114(v1, v3, v5, v2, v4, v6, 3, 1, 4) -> f_115(v1, v3, v5, v7, v2, v4, v6, v8, 3, 1, 4) :|: 1 <= v7 && v8 = 3 + v7 && 4 <= v8 f_115(v1, v3, v5, v7, v2, v4, v6, v8, 3, 1, 4) -> f_116(v1, v3, v5, v7, v9, v2, v4, v6, v8, v10, 3, 1, 4) :|: 1 <= v9 && v10 = 3 + v9 && 4 <= v10 f_116(v1, v3, v5, v7, v9, v2, v4, v6, v8, v10, 3, 1, 4) -> f_117(v1, v3, v5, v7, v9, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_117(v1, v3, v5, v7, v9, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_118(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_118(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_119(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_119(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_120(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_120(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_121(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_121(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_122(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_122(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_123(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_123(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_124(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: TRUE f_124(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_125(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: 0 = 0 f_125(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_126(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: 0 = 0 f_126(v1, v3, v5, v7, v9, v11, v13, v15, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_127(v1, v3, v5, v7, v9, v11, v13, v15, v17, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: v17 + v15 = v13 f_127(v1, v3, v5, v7, v9, v11, v13, v15, v17, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_128(v1, v3, v5, v7, v9, v11, v13, v15, v17, v2, v4, v6, v8, v10, 0, 3, 1, 4) :|: 1 <= v17 f_128(v1, v3, v5, v7, v9, v11, v13, v15, v17, v2, v4, v6, v8, v10, 0, 3, 1, 4) -> f_130(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: 0 = 0 f_130(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_132(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: TRUE f_132(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_134(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: 0 = 0 f_134(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_136(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: 0 = 0 f_136(v1, v3, v5, v7, v9, v11, v13, v15, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_137(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: v11 = v15 f_137(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_139(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: 0 = 0 f_139(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_141(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: 0 = 0 f_141(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_143(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) :|: TRUE f_143(v1, v3, v5, v7, v9, v15, v13, v17, 1, v2, v4, v6, v8, v10, 0, 3, 4) -> f_145(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 3, 4) :|: TRUE f_145(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 3, 4) -> f_146(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 3, 4) :|: TRUE f_146(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 3, 4) -> f_147(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: TRUE f_147(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_148(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: 0 = 0 f_148(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_149(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: v28 = 1 + v15 f_149(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_150(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: 0 = 0 f_150(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_151(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: v29 = v28 + v26 f_151(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_152(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: TRUE f_152(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_153(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: 0 = 0 f_153(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_154(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: TRUE f_154(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_155(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: TRUE f_155(v1, v3, v5, v7, v9, v15, v13, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) -> f_182(v1, v3, v5, v7, v9, v15, v13, v13, v15, v17, 1, v26, v28, v29, v2, v4, v6, v8, v10, 0, 10, 3, 4) :|: TRUE Combined rules. Obtained 2 rulesP rules: f_183(v103:0, v104:0, v105:0, v106:0, v107:0, v108:0, v109:0, 10, v111:0, v112:0, 1, v114:0, v115:0, v116:0, v117:0, v118:0, v119:0, v120:0, v121:0, 0, 3, 4) -> f_183(v103:0, v104:0, v105:0, v106:0, v107:0, v108:0, v109:0, 10, v116:0, v124:0, 1, v176:0, 1 + v116:0, 1 + v116:0 + v176:0, v117:0, v118:0, v119:0, v120:0, v121:0, 0, 3, 4) :|: v116:0 < 10 && v124:0 > 0 && v124:0 + v116:0 = 10 f_111 -> f_183(v1:0, v3:0, v5:0, v7:0, v9:0, v11:0, v17:0 + v11:0, 10, v11:0, v17:0, 1, v26:0, 1 + v11:0, 1 + v11:0 + v26:0, 3 + v1:0, 3 + v3:0, 3 + v5:0, 3 + v7:0, 3 + v9:0, 0, 3, 4) :|: v3:0 > 0 && v1:0 > 0 && v5:0 > 0 && v7:0 > 0 && v9:0 > 0 && v17:0 > 0 Filtered unneeded arguments: f_183(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x21, x22) -> f_183(x9, x10, x13, x14) Removed division, modulo operations, cleaned up constraints. Obtained 2 rules.P rules: f_183(v111:0, v112:0, v115:0, v116:0) -> f_183(v116:0, v124:0, 1 + v116:0, 1 + v116:0 + v176:0) :|: v124:0 > 0 && v124:0 + v116:0 = 10 && v116:0 < 10 f_111 -> f_183(v11:0, v17:0, 1 + v11:0, 1 + v11:0 + v26:0) :|: v17:0 > 0 ---------------------------------------- (8) Obligation: Rules: f_183(v111:0, v112:0, v115:0, v116:0) -> f_183(v116:0, v124:0, 1 + v116:0, 1 + v116:0 + v176:0) :|: v124:0 > 0 && v124:0 + v116:0 = 10 && v116:0 < 10 f_111 -> f_183(v11:0, v17:0, 1 + v11:0, 1 + v11:0 + v26:0) :|: v17:0 > 0 Start term: f_111 ---------------------------------------- (9) IRS2T2 (EQUIVALENT) Transformed input IRS into an integer transition system.Used the following mapping from defined symbols to location IDs: (f_183_4,1) (f_111_4,2) ---------------------------------------- (10) Obligation: START: 2; FROM: 1; oldX0 := x0; oldX1 := x1; oldX2 := x2; oldX3 := x3; oldX4 := -(oldX3 - 10); oldX5 := nondet(); assume(oldX4 > 0 && oldX4 + oldX3 = 10 && oldX3 < 10); x0 := oldX3; x1 := -(oldX3 - 10); x2 := 1 + oldX3; x3 := 1 + oldX3 + oldX5; TO: 1; FROM: 2; oldX0 := x0; oldX1 := x1; oldX2 := x2; oldX3 := x3; oldX4 := nondet(); oldX5 := nondet(); oldX6 := nondet(); assume(oldX5 > 0); x0 := oldX4; x1 := oldX5; x2 := 1 + oldX4; x3 := 1 + oldX4 + oldX6; TO: 1; ---------------------------------------- (11) T2 (COMPLETE) Found this recurrent set for cutpoint 5: oldX4 == 1 and oldX5 == 1 and oldX6 == 0 and x3 == 2 or oldX4 == 1 and oldX5 == -3 and oldX6 == 0 and x3 == 0 ---------------------------------------- (12) NO