/export/starexec/sandbox2/solver/bin/starexec_run_c /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files


--------------------------------------------------------------------------------


NO
proof of /export/starexec/sandbox2/benchmark/theBenchmark.c
# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty


Termination of the given C Problem could be disproven:

(0) C Problem
(1) CToLLVMProof [EQUIVALENT, 164 ms]
(2) LLVM problem
(3) LLVMToTerminationGraphProof [EQUIVALENT, 1129 ms]
(4) LLVM Symbolic Execution Graph
(5) SymbolicExecutionGraphToLassoProof [EQUIVALENT, 0 ms]
(6) LLVM Symbolic Execution Lasso
(7) Lasso2IRS [EQUIVALENT, 69 ms]
(8) IntTRS
(9) IRS2T2 [EQUIVALENT, 0 ms]
(10) T2IntSys
(11) T2 Underapproximation [COMPLETE, 1792 ms]
(12) T2IntSys
(13) T2 [COMPLETE, 1882 ms]
(14) NO


----------------------------------------

(0)
Obligation:
c file /export/starexec/sandbox2/benchmark/theBenchmark.c
----------------------------------------

(1) CToLLVMProof (EQUIVALENT)
Compiled c-file /export/starexec/sandbox2/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
		%x = alloca i32, align 4
		%y = alloca i32, align 4
		%z = alloca i32, align 4
		store 0, %1
		%2 = call i32 @__VERIFIER_nondet_int()
		store %2, %x
		%3 = call i32 @__VERIFIER_nondet_int()
		store %3, %y
		%4 = call i32 @__VERIFIER_nondet_int()
		store %4, %z
		br %5
	5:
		%6 = load %x
		%7 = icmp slt %6 0
		br %7, %8, %16
	8:
		%9 = load %x
		%10 = load %z
		%11 = add %9 %10
		store %11, %x
		%12 = load %y
		%13 = mul -2 %12
		store %13, %z
		%14 = load %y
		%15 = add %14 1
		store %15, %y
		br %5
	16:
		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 45 rulesP rules:
f_153(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_154(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: v62 < 0
f_154(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_156(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: 0 = 0
f_156(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_158(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: TRUE
f_158(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_160(v52, v53, v54, v55, v56, v57, v58, v62, 1, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: 0 = 0
f_160(v52, v53, v54, v55, v56, v57, v58, v62, 1, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_161(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v63, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: 0 = 0
f_161(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v63, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_162(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v63, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: v71 = v62 + v64
f_162(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v63, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_163(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v63, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: TRUE
f_163(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v63, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_164(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v63, v66, v67, v68, v69, 0, 3, 2, 4) :|: 0 = 0
f_164(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v63, v66, v67, v68, v69, 0, 3, 2, 4) -> f_165(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v63, v66, v67, v68, v69, 0, 3, 2, 4) :|: v73 + 2 * v65 = 0
f_165(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v63, v66, v67, v68, v69, 0, 3, 2, 4) -> f_166(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v63, v66, v67, v68, v69, 0, 3, 2, 4) :|: TRUE
f_166(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v63, v66, v67, v68, v69, 0, 3, 2, 4) -> f_167(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v66, v67, v68, v69, 0, 3, 2, 4) :|: 0 = 0
f_167(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v66, v67, v68, v69, 0, 3, 2, 4) -> f_168(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) :|: v75 = 1 + v65
f_168(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) -> f_169(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) :|: TRUE
f_169(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) -> f_170(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) :|: TRUE
f_170(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) -> f_152(v52, v53, v54, v55, v56, v57, v58, v62, 1, v64, v71, v65, v73, v75, v66, v67, v68, v69, 0, 3, 2, 4) :|: TRUE
f_152(v52, v53, v54, v55, v56, v57, v58, v59, 1, v61, v62, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) -> f_153(v52, v53, v54, v55, v56, v57, v58, v62, 1, v59, v61, v63, v64, v65, v66, v67, v68, v69, 0, 3, 2, 4) :|: 0 = 0
f_84 -> f_85(v1, v2, 3, 1, 4) :|: 1 <= v1 && v2 = 3 + v1 && 4 <= v2
f_85(v1, v2, 3, 1, 4) -> f_86(v1, v3, v2, v4, 3, 1, 4) :|: 1 <= v3 && v4 = 3 + v3 && 4 <= v4
f_86(v1, v3, v2, v4, 3, 1, 4) -> f_87(v1, v3, v5, v2, v4, v6, 3, 1, 4) :|: 1 <= v5 && v6 = 3 + v5 && 4 <= v6
f_87(v1, v3, v5, v2, v4, v6, 3, 1, 4) -> f_88(v1, v3, v5, v7, v2, v4, v6, v8, 3, 1, 4) :|: 1 <= v7 && v8 = 3 + v7 && 4 <= v8
f_88(v1, v3, v5, v7, v2, v4, v6, v8, 3, 1, 4) -> f_89(v1, v3, v5, v7, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_89(v1, v3, v5, v7, v2, v4, v6, v8, 0, 3, 1, 4) -> f_90(v1, v3, v5, v7, v9, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_90(v1, v3, v5, v7, v9, v2, v4, v6, v8, 0, 3, 1, 4) -> f_91(v1, v3, v5, v7, v9, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_91(v1, v3, v5, v7, v9, v2, v4, v6, v8, 0, 3, 1, 4) -> f_92(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_92(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, 0, 3, 1, 4) -> f_93(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_93(v1, v3, v5, v7, v9, v11, v2, v4, v6, v8, 0, 3, 1, 4) -> f_94(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_94(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) -> f_95(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_95(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) -> f_96(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) :|: TRUE
f_96(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) -> f_97(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) :|: 0 = 0
f_97(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) -> f_98(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) :|: v9 < 0
f_98(v1, v3, v5, v7, v9, v11, v13, v2, v4, v6, v8, 0, 3, 1, 4) -> f_100(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) :|: 0 = 0
f_100(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) -> f_102(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) :|: TRUE
f_102(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) -> f_104(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) :|: 0 = 0
f_104(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) -> f_105(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) :|: 0 = 0
f_105(v1, v3, v5, v7, v9, v11, v13, 1, v2, v4, v6, v8, 0, 3, 4) -> f_106(v1, v3, v5, v7, v9, v11, v13, 1, v15, v2, v4, v6, v8, 0, 3, 4) :|: v15 = v9 + v13
f_106(v1, v3, v5, v7, v9, v11, v13, 1, v15, v2, v4, v6, v8, 0, 3, 4) -> f_107(v1, v3, v5, v7, v9, v11, v13, 1, v15, v2, v4, v6, v8, 0, 3, 4) :|: TRUE
f_107(v1, v3, v5, v7, v9, v11, v13, 1, v15, v2, v4, v6, v8, 0, 3, 4) -> f_108(v1, v3, v5, v7, v9, v11, v13, 1, v15, v2, v4, v6, v8, 0, 3, 4) :|: 0 = 0
f_108(v1, v3, v5, v7, v9, v11, v13, 1, v15, v2, v4, v6, v8, 0, 3, 4) -> f_109(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v2, v4, v6, v8, 0, 3, 2, 4) :|: v17 + 2 * v11 = 0
f_109(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v2, v4, v6, v8, 0, 3, 2, 4) -> f_110(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v2, v4, v6, v8, 0, 3, 2, 4) :|: TRUE
f_110(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v2, v4, v6, v8, 0, 3, 2, 4) -> f_111(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v2, v4, v6, v8, 0, 3, 2, 4) :|: 0 = 0
f_111(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v2, v4, v6, v8, 0, 3, 2, 4) -> f_112(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) :|: v19 = 1 + v11
f_112(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) -> f_113(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) :|: TRUE
f_113(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) -> f_114(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) :|: TRUE
f_114(v1, v3, v5, v7, v9, v11, v13, 1, v15, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) -> f_133(v1, v3, v5, v7, v9, v11, v13, v9, 1, v13, v15, v11, v17, v19, v2, v4, v6, v8, 0, 3, 2, 4) :|: TRUE
f_133(v27, v28, v29, v30, v31, v32, v33, v34, 1, v36, v37, v38, v39, v40, v41, v42, v43, v44, 0, 3, 2, 4) -> f_152(v27, v28, v29, v30, v31, v32, v33, v34, 1, v36, v37, v38, v39, v40, v41, v42, v43, v44, 0, 3, 2, 4) :|: TRUE
Combined rules. Obtained 2 rulesP rules:
f_153(v52:0, v53:0, v54:0, v55:0, v56:0, v57:0, v58:0, v62:0, 1, v59:0, v61:0, v63:0, v64:0, v65:0, v66:0, v67:0, v68:0, v69:0, 0, 3, 2, 4) -> f_153(v52:0, v53:0, v54:0, v55:0, v56:0, v57:0, v58:0, v62:0 + v64:0, 1, v62:0, v64:0, v65:0, v73:0, 1 + v65:0, v66:0, v67:0, v68:0, v69:0, 0, 3, 2, 4) :|: v73:0 + 2 * v65:0 = 0 && v62:0 < 0
f_84 -> f_153(v1:0, v3:0, v5:0, v7:0, v9:0, v11:0, v13:0, v9:0 + v13:0, 1, v9:0, v13:0, v11:0, v17:0, 1 + v11:0, 3 + v1:0, 3 + v3:0, 3 + v5:0, 3 + v7:0, 0, 3, 2, 4) :|: v3:0 > 0 && v1:0 > 0 && v5:0 > 0 && v7:0 > 0 && v17:0 + 2 * v11:0 = 0 && v9:0 < 0
Filtered unneeded arguments:
   f_153(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x21, x22) -> f_153(x8, x13, x14)
Removed division, modulo operations, cleaned up constraints. Obtained 2 rules.P rules:
f_153(v62:0, v64:0, v65:0) -> f_153(v62:0 + v64:0, v73:0, 1 + v65:0) :|: v73:0 + 2 * v65:0 = 0 && v62:0 < 0
f_84 -> f_153(v9:0 + v13:0, v17:0, 1 + v11:0) :|: v17:0 + 2 * v11:0 = 0 && v9:0 < 0

----------------------------------------

(8)
Obligation:
Rules:
f_153(v62:0, v64:0, v65:0) -> f_153(v62:0 + v64:0, v73:0, 1 + v65:0) :|: v73:0 + 2 * v65:0 = 0 && v62:0 < 0
f_84 -> f_153(v9:0 + v13:0, v17:0, 1 + v11:0) :|: v17:0 + 2 * v11:0 = 0 && v9:0 < 0
Start term: f_84

----------------------------------------

(9) IRS2T2 (EQUIVALENT)
Transformed input IRS into an integer transition system.Used the following mapping from defined symbols to location IDs:

   (f_153_3,1)
   (f_84_3,2)

----------------------------------------

(10)
Obligation:
START: 2;

FROM: 1;
oldX0 := x0;
oldX1 := x1;
oldX2 := x2;
oldX3 := nondet();
assume(oldX3 + 2 * oldX2 = 0 && oldX0 < 0);
x0 := oldX0 + oldX1;
x1 := oldX3;
x2 := 1 + oldX2;
TO: 1;

FROM: 2;
oldX0 := x0;
oldX1 := x1;
oldX2 := x2;
oldX3 := nondet();
oldX4 := nondet();
oldX5 := nondet();
oldX6 := nondet();
assume(oldX5 + 2 * oldX6 = 0 && oldX3 < 0);
x0 := oldX3 + oldX4;
x1 := oldX5;
x2 := 1 + oldX6;
TO: 1;


----------------------------------------

(11) T2 Underapproximation (COMPLETE)
Added the following guard statements:



Transition 1:
assume(x2 >= 0);



----------------------------------------

(12)
Obligation:
START: 2;

FROM: 1;
oldX0 := x0;
oldX1 := x1;
oldX2 := x2;
oldX3 := nondet();
assume(oldX3 + (x2 + x2) = 0 && x0 < 0);
x0 := x0 + x1;
x1 := oldX3;
assume(x2 >= 0);
x2 := x2 + 1;
TO: 1;

FROM: 2;
oldX0 := x0;
oldX1 := x1;
oldX2 := x2;
oldX3 := nondet();
oldX4 := nondet();
oldX5 := nondet();
oldX6 := nondet();
assume(oldX5 + (oldX6 + oldX6) = 0 && oldX3 < 0);
x0 := oldX3 + oldX4;
x1 := oldX5;
x2 := oldX6 + 1;
TO: 1;


----------------------------------------

(13) T2 (COMPLETE)
Found this recurrent set for cutpoint 5: oldX3 <= -2 and -1 <= oldX6 and x1 <= -2 and 2 <= x2 and oldX3-oldX6 <= -1 and oldX6+oldX3 <= -3 and x1-oldX6 <= -1 and oldX6+x1 <= -3 and x1-oldX3 <= 0 and oldX3-x1 <= 0 and x1+oldX3 <= -4 and oldX3-x2 <= -4 and x2+oldX3 <= 0 and oldX6-x2 <= -3 and 1 <= x2+oldX6 and x1-x2 <= -4 and x2+x1 <= 0 and x0+1 <= 0 and -x2 <= 0

----------------------------------------

(14)
NO