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fix(oom-rc8): serialize SMT-LIB string once, reuse for stats and file… #1600

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agusaldasoro wants to merge 1 commit into from
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fix(oom-rc8): serialize SMT-LIB string once, reuse for stats and file… #1600

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9 changes: 5 additions & 4 deletions core/src/main/kotlin/org/evomaster/core/solver/SMTLibZ3DbConstraintSolver.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -126,12 +126,13 @@ class SMTLibZ3DbConstraintSolver() : DbConstraintSolver {
val generator = SmtLibGenerator(schemaDto, numberOfRows)
val smtLib = generator.generateSMT(queryStatement)
val smtlibGenMs = System.currentTimeMillis() - smtlibGenStart
val smtString = smtLib.toString()
if (collectStats) {
val smtlibBytes = smtLib.toString().toByteArray(StandardCharsets.UTF_8).size
val smtlibBytes = smtString.toByteArray(StandardCharsets.UTF_8).size
statistics.reportDseSmtlibGenTime(smtlibGenMs, smtlibBytes)
}

val fileName = storeToTmpFile(smtLib)
val fileName = storeToTmpFile(smtString)

val z3Start = System.currentTimeMillis()
val z3Result = executor.solveFromFile(fileName)
Expand Down Expand Up @@ -398,7 +399,7 @@ class SMTLibZ3DbConstraintSolver() : DbConstraintSolver {
* @param smtLib The SMTLib problem.
* @return The filename of the stored SMTLib problem.
*/
private fun storeToTmpFile(smtLib: SMTLib): String {
private fun storeToTmpFile(smtLib: String): String {
val directoryPath = leadingBarResourcesFolder()
val fileNameBase = "smt2_${System.currentTimeMillis()}"
val fileExtension = ".smt2"
Expand All @@ -417,7 +418,7 @@ class SMTLibZ3DbConstraintSolver() : DbConstraintSolver {
filePath = directory.resolve(fileName)
}

Files.write(filePath, smtLib.toString().toByteArray(StandardCharsets.UTF_8))
Files.write(filePath, smtLib.toByteArray(StandardCharsets.UTF_8))

return fileName
} catch (e: IOException) {
Expand Down
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