8.46/6.37 WORST_CASE(?, O(n^2)) 8.46/6.38 proof of /export/starexec/sandbox/benchmark/theBenchmark.koat 8.46/6.38 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 8.46/6.38 8.46/6.38 8.46/6.38 The runtime complexity of the given CpxIntTrs could be proven to be BOUNDS(1, max(1, 3 + 2 * Arg_0) + nat(2 * Arg_0) + nat(Arg_0 * max(2 * Arg_0, -2) + max(2 * Arg_0, -2))). 8.46/6.38 8.46/6.38 (0) CpxIntTrs 8.46/6.38 (1) Koat2 Proof [FINISHED, 227 ms] 8.46/6.38 (2) BOUNDS(1, max(1, 3 + 2 * Arg_0) + nat(2 * Arg_0) + nat(Arg_0 * max(2 * Arg_0, -2) + max(2 * Arg_0, -2))) 8.46/6.38 8.46/6.38 8.46/6.38 ---------------------------------------- 8.46/6.38 8.46/6.38 (0) 8.46/6.38 Obligation: 8.46/6.38 Complexity Int TRS consisting of the following rules: 8.46/6.38 eval1(A, B) -> Com_1(eval2(A, 1)) :|: A >= 0 8.46/6.38 eval2(A, B) -> Com_1(eval2(A, 2 * B)) :|: A >= 0 && B >= 1 && A >= B + 1 8.46/6.38 eval2(A, B) -> Com_1(eval1(A - 1, B)) :|: A >= 0 && B >= 1 && B >= A 8.46/6.38 start(A, B) -> Com_1(eval1(A, B)) :|: TRUE 8.46/6.38 8.46/6.38 The start-symbols are:[start_2] 8.46/6.38 8.46/6.38 8.46/6.38 ---------------------------------------- 8.46/6.38 8.46/6.38 (1) Koat2 Proof (FINISHED) 8.46/6.38 YES( ?, 1+2*max([0, 1+Arg_0])+max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])]) {O(n^2)}) 8.46/6.38 8.46/6.38 8.46/6.38 8.46/6.38 Initial Complexity Problem: 8.46/6.38 8.46/6.38 Start: start 8.46/6.38 8.46/6.38 Program_Vars: Arg_0, Arg_1 8.46/6.38 8.46/6.38 Temp_Vars: 8.46/6.38 8.46/6.38 Locations: eval1, eval2, start 8.46/6.38 8.46/6.38 Transitions: 8.46/6.38 8.46/6.38 eval1(Arg_0,Arg_1) -> eval2(Arg_0,1):|:0 <= Arg_0 8.46/6.38 8.46/6.38 eval2(Arg_0,Arg_1) -> eval1(Arg_0-1,Arg_1):|:1 <= Arg_1 && 1 <= Arg_0+Arg_1 && 0 <= Arg_0 && 0 <= Arg_0 && 1 <= Arg_1 && Arg_0 <= Arg_1 8.46/6.38 8.46/6.38 eval2(Arg_0,Arg_1) -> eval2(Arg_0,(2)*Arg_1):|:1 <= Arg_1 && 1 <= Arg_0+Arg_1 && 0 <= Arg_0 && 0 <= Arg_0 && 1 <= Arg_1 && Arg_1+1 <= Arg_0 8.46/6.38 8.46/6.38 start(Arg_0,Arg_1) -> eval1(Arg_0,Arg_1):|: 8.46/6.38 8.46/6.38 8.46/6.38 8.46/6.38 Timebounds: 8.46/6.38 8.46/6.38 Overall timebound: 1+2*max([0, 1+Arg_0])+max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])]) {O(n^2)} 8.46/6.38 8.46/6.38 0: eval1->eval2: max([0, 1+Arg_0]) {O(n)} 8.46/6.38 8.46/6.38 1: eval2->eval2: max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])]) {O(n^2)} 8.46/6.38 8.46/6.38 2: eval2->eval1: max([0, 1+Arg_0]) {O(n)} 8.46/6.38 8.46/6.38 3: start->eval1: 1 {O(1)} 8.46/6.38 8.46/6.38 8.46/6.38 8.46/6.38 Costbounds: 8.46/6.38 8.46/6.38 Overall costbound: 1+2*max([0, 1+Arg_0])+max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])]) {O(n^2)} 8.46/6.38 8.46/6.38 0: eval1->eval2: max([0, 1+Arg_0]) {O(n)} 8.46/6.38 8.46/6.38 1: eval2->eval2: max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])]) {O(n^2)} 8.46/6.38 8.46/6.38 2: eval2->eval1: max([0, 1+Arg_0]) {O(n)} 8.46/6.38 8.46/6.38 3: start->eval1: 1 {O(1)} 8.46/6.38 8.46/6.38 8.46/6.38 8.46/6.38 Sizebounds: 8.46/6.38 8.46/6.38 `Lower: 8.46/6.38 8.46/6.38 0: eval1->eval2, Arg_0: 0 {O(1)} 8.46/6.38 8.46/6.38 0: eval1->eval2, Arg_1: 1 {O(1)} 8.46/6.38 8.46/6.38 1: eval2->eval2, Arg_0: 2 {O(1)} 8.46/6.38 8.46/6.38 1: eval2->eval2, Arg_1: 2 {O(1)} 8.46/6.38 8.46/6.38 2: eval2->eval1, Arg_0: -1 {O(1)} 8.46/6.38 8.46/6.38 2: eval2->eval1, Arg_1: 1 {O(1)} 8.46/6.38 8.46/6.38 3: start->eval1, Arg_0: Arg_0 {O(n)} 8.46/6.38 8.46/6.38 3: start->eval1, Arg_1: Arg_1 {O(n)} 8.46/6.38 8.46/6.38 `Upper: 8.46/6.38 8.46/6.38 0: eval1->eval2, Arg_0: Arg_0 {O(n)} 8.46/6.38 8.46/6.38 0: eval1->eval2, Arg_1: 1 {O(1)} 8.46/6.38 8.46/6.38 1: eval2->eval2, Arg_0: Arg_0 {O(n)} 8.46/6.38 8.46/6.38 1: eval2->eval2, Arg_1: 2^(max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])])) {O(EXP)} 8.46/6.38 8.46/6.38 2: eval2->eval1, Arg_0: Arg_0 {O(n)} 8.46/6.38 8.46/6.38 2: eval2->eval1, Arg_1: max([1, 2^(max([0, 2*Arg_0])+max([0, (1+Arg_0)*max([-2, 2*Arg_0])]))]) {O(EXP)} 8.46/6.38 8.46/6.38 3: start->eval1, Arg_0: Arg_0 {O(n)} 8.46/6.38 8.46/6.38 3: start->eval1, Arg_1: Arg_1 {O(n)} 8.46/6.38 8.46/6.38 8.46/6.38 ---------------------------------------- 8.46/6.38 8.46/6.38 (2) 8.46/6.38 BOUNDS(1, max(1, 3 + 2 * Arg_0) + nat(2 * Arg_0) + nat(Arg_0 * max(2 * Arg_0, -2) + max(2 * Arg_0, -2))) 8.57/6.40 EOF