./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef75293aeb91e37969e4557310245e0c38a479cd ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef75293aeb91e37969e4557310245e0c38a479cd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:08:48,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:08:48,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:08:48,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:08:48,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:08:48,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:08:48,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:08:48,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:08:48,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:08:48,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:08:48,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:08:48,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:08:48,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:08:48,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:08:48,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:08:48,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:08:48,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:08:48,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:08:48,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:08:48,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:08:48,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:08:48,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:08:48,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:08:48,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:08:48,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:08:48,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:08:48,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:08:48,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:08:48,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:08:48,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:08:48,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:08:48,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:08:48,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:08:48,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:08:48,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:08:48,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:08:48,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:08:48,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:08:48,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:08:48,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:08:48,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:08:48,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:08:48,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:08:48,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:08:48,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:08:48,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:08:48,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:08:48,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:08:48,608 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:08:48,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:08:48,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:08:48,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:08:48,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:08:48,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:08:48,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:08:48,611 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:08:48,611 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:08:48,611 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:08:48,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:08:48,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:08:48,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:08:48,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:08:48,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:08:48,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:08:48,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:08:48,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:08:48,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:08:48,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:08:48,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:08:48,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:08:48,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:08:48,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef75293aeb91e37969e4557310245e0c38a479cd [2021-08-27 05:08:48,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:08:48,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:08:48,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:08:48,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:08:48,951 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:08:48,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-08-27 05:08:49,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5e9486fa/46f73178f63b43f69038d46eb385e795/FLAG559bb046b [2021-08-27 05:08:49,555 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:08:49,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-08-27 05:08:49,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5e9486fa/46f73178f63b43f69038d46eb385e795/FLAG559bb046b [2021-08-27 05:08:50,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5e9486fa/46f73178f63b43f69038d46eb385e795 [2021-08-27 05:08:50,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:08:50,033 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:08:50,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:08:50,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:08:50,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:08:50,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:08:50" (1/1) ... [2021-08-27 05:08:50,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c57d620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:50, skipping insertion in model container [2021-08-27 05:08:50,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:08:50" (1/1) ... [2021-08-27 05:08:50,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:08:50,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:08:50,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:08:50,424 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 05:08:50,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79ac1dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:50, skipping insertion in model container [2021-08-27 05:08:50,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:08:50,426 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 05:08:50,429 INFO L168 Benchmark]: Toolchain (without parser) took 394.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 49.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:08:50,430 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:08:50,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.10 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.5 MB in the beginning and 49.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:08:50,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.10 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.5 MB in the beginning and 49.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:08:52,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:08:52,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:08:52,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:08:52,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:08:52,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:08:52,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:08:52,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:08:52,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:08:52,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:08:52,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:08:52,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:08:52,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:08:52,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:08:52,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:08:52,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:08:52,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:08:52,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:08:52,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:08:52,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:08:52,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:08:52,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:08:52,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:08:52,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:08:52,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:08:52,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:08:52,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:08:52,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:08:52,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:08:52,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:08:52,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:08:52,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:08:52,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:08:52,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:08:52,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:08:52,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:08:52,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:08:52,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:08:52,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:08:52,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:08:52,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:08:52,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:08:52,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:08:52,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:08:52,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:08:52,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:08:52,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:08:52,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:08:52,316 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:08:52,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:08:52,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:08:52,317 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:08:52,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:08:52,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:08:52,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:08:52,318 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:08:52,318 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:08:52,325 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:08:52,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:08:52,326 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:08:52,326 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:08:52,326 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:08:52,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:08:52,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:08:52,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:08:52,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:08:52,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:08:52,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:08:52,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:08:52,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:08:52,328 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:08:52,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:08:52,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:08:52,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:08:52,328 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef75293aeb91e37969e4557310245e0c38a479cd [2021-08-27 05:08:52,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:08:52,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:08:52,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:08:52,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:08:52,634 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:08:52,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-08-27 05:08:52,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2db3ab1/7d45d055bb1c49999058048a8c3cc2c6/FLAG519513b29 [2021-08-27 05:08:53,216 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:08:53,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-08-27 05:08:53,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2db3ab1/7d45d055bb1c49999058048a8c3cc2c6/FLAG519513b29 [2021-08-27 05:08:53,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2db3ab1/7d45d055bb1c49999058048a8c3cc2c6 [2021-08-27 05:08:53,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:08:53,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:08:53,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:08:53,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:08:53,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:08:53,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:08:53" (1/1) ... [2021-08-27 05:08:53,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288416d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:53, skipping insertion in model container [2021-08-27 05:08:53,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:08:53" (1/1) ... [2021-08-27 05:08:53,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:08:53,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:08:54,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:08:54,054 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 05:08:54,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:08:54,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:08:54,107 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:08:54,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:08:54,173 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:08:54,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54 WrapperNode [2021-08-27 05:08:54,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:08:54,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:08:54,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:08:54,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:08:54,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:08:54,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:08:54,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:08:54,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:08:54,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (1/1) ... [2021-08-27 05:08:54,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:08:54,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:08:54,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 05:08:54,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 05:08:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:08:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:08:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:08:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:08:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:08:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:08:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:08:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:08:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2021-08-27 05:08:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:08:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2021-08-27 05:08:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:08:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:08:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:08:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:08:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:08:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:08:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:08:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:08:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:08:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:08:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:08:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:08:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:08:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:08:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:08:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:08:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:08:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:08:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:08:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:08:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:08:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:08:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:08:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:08:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:08:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:08:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:08:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:08:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:08:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:08:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:08:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:08:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:08:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:08:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:08:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:08:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:08:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:08:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:08:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2021-08-27 05:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2021-08-27 05:08:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 05:08:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:08:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:08:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:08:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:08:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:08:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:08:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 05:08:54,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:08:54,860 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 05:08:54,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:08:54 BoogieIcfgContainer [2021-08-27 05:08:54,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:08:54,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:08:54,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:08:54,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:08:54,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:08:53" (1/3) ... [2021-08-27 05:08:54,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23686bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:08:54, skipping insertion in model container [2021-08-27 05:08:54,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:54" (2/3) ... [2021-08-27 05:08:54,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23686bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:08:54, skipping insertion in model container [2021-08-27 05:08:54,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:08:54" (3/3) ... [2021-08-27 05:08:54,869 INFO L111 eAbstractionObserver]: Analyzing ICFG array-realloc-1.i [2021-08-27 05:08:54,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:08:54,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-08-27 05:08:54,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:08:54,910 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:08:54,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-08-27 05:08:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 05:08:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 05:08:54,926 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:08:54,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:08:54,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:08:54,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:08:54,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1774917903, now seen corresponding path program 1 times [2021-08-27 05:08:54,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:08:54,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926910078] [2021-08-27 05:08:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:08:54,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:08:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:08:54,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:08:54,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 05:08:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:08:55,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:08:55,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:08:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:55,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:08:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:55,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:08:55,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926910078] [2021-08-27 05:08:55,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926910078] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:08:55,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:08:55,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:08:55,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676636507] [2021-08-27 05:08:55,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:08:55,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:08:55,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:08:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:08:55,274 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:08:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:08:55,340 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-08-27 05:08:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:08:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 05:08:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:08:55,348 INFO L225 Difference]: With dead ends: 55 [2021-08-27 05:08:55,348 INFO L226 Difference]: Without dead ends: 51 [2021-08-27 05:08:55,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:08:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-27 05:08:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-08-27 05:08:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:08:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-08-27 05:08:55,376 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-08-27 05:08:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:08:55,377 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-08-27 05:08:55,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:08:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-08-27 05:08:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:08:55,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:08:55,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:08:55,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:08:55,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:08:55,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:08:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:08:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -812119182, now seen corresponding path program 1 times [2021-08-27 05:08:55,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:08:55,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026382800] [2021-08-27 05:08:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:08:55,588 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:08:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:08:55,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:08:55,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 05:08:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:08:55,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:08:55,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:08:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:55,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:08:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:55,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:08:55,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026382800] [2021-08-27 05:08:55,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026382800] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:08:55,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:08:55,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 05:08:55,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458151081] [2021-08-27 05:08:55,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:08:55,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:08:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:08:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:08:55,804 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:08:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:08:55,817 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-08-27 05:08:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:08:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:08:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:08:55,819 INFO L225 Difference]: With dead ends: 39 [2021-08-27 05:08:55,819 INFO L226 Difference]: Without dead ends: 39 [2021-08-27 05:08:55,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:08:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-27 05:08:55,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-27 05:08:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:08:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-27 05:08:55,829 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 9 [2021-08-27 05:08:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:08:55,830 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-27 05:08:55,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:08:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-27 05:08:55,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 05:08:55,830 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:08:55,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:08:55,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:08:56,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:08:56,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:08:56,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:08:56,045 INFO L82 PathProgramCache]: Analyzing trace with hash -386852574, now seen corresponding path program 1 times [2021-08-27 05:08:56,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:08:56,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387502420] [2021-08-27 05:08:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:08:56,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:08:56,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:08:56,047 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:08:56,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 05:08:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:08:56,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 05:08:56,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:08:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:56,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:08:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:56,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:08:56,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387502420] [2021-08-27 05:08:56,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387502420] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:08:56,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:08:56,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 05:08:56,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288730173] [2021-08-27 05:08:56,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:08:56,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:08:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:08:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:08:56,400 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:08:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:08:56,439 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-08-27 05:08:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:08:56,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 05:08:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:08:56,441 INFO L225 Difference]: With dead ends: 46 [2021-08-27 05:08:56,441 INFO L226 Difference]: Without dead ends: 46 [2021-08-27 05:08:56,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:08:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-27 05:08:56,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-08-27 05:08:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.48) internal successors, (37), 33 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:08:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-08-27 05:08:56,454 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2021-08-27 05:08:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:08:56,455 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-08-27 05:08:56,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:08:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-08-27 05:08:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:08:56,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:08:56,457 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:08:56,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:08:56,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:08:56,667 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:08:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:08:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash -171591004, now seen corresponding path program 1 times [2021-08-27 05:08:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:08:56,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559280507] [2021-08-27 05:08:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:08:56,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:08:56,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:08:56,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:08:56,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 05:08:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:08:56,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 05:08:56,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:08:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:56,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:08:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:57,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:08:57,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559280507] [2021-08-27 05:08:57,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559280507] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:08:57,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:08:57,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-27 05:08:57,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495385323] [2021-08-27 05:08:57,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:08:57,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:08:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:08:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:08:57,028 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:08:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:08:57,092 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-08-27 05:08:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:08:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-08-27 05:08:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:08:57,095 INFO L225 Difference]: With dead ends: 52 [2021-08-27 05:08:57,095 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 05:08:57,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:08:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 05:08:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-08-27 05:08:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 05:08:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-08-27 05:08:57,104 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-08-27 05:08:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:08:57,105 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-08-27 05:08:57,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:08:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-08-27 05:08:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:08:57,107 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:08:57,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:08:57,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-08-27 05:08:57,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:08:57,316 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:08:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:08:57,316 INFO L82 PathProgramCache]: Analyzing trace with hash -170667483, now seen corresponding path program 1 times [2021-08-27 05:08:57,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:08:57,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403366996] [2021-08-27 05:08:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:08:57,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:08:57,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:08:57,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:08:57,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 05:08:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:08:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:08:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:08:57,565 INFO L354 Elim1Store]: treesize reduction 10, result has 50.0 percent of original size [2021-08-27 05:08:57,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 16 [2021-08-27 05:08:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:57,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:08:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:57,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:08:57,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403366996] [2021-08-27 05:08:57,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403366996] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:08:57,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:08:57,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 05:08:57,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047634904] [2021-08-27 05:08:57,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:08:57,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:08:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:08:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:08:57,695 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:08:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:08:57,788 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-08-27 05:08:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:08:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-27 05:08:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:08:57,794 INFO L225 Difference]: With dead ends: 45 [2021-08-27 05:08:57,794 INFO L226 Difference]: Without dead ends: 45 [2021-08-27 05:08:57,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:08:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-27 05:08:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-08-27 05:08:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 05:08:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-08-27 05:08:57,805 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 17 [2021-08-27 05:08:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:08:57,805 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-08-27 05:08:57,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:08:57,807 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-08-27 05:08:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:08:57,808 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:08:57,808 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:08:57,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 05:08:58,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:08:58,018 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting expandArrayErr1REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:08:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:08:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash -170667482, now seen corresponding path program 1 times [2021-08-27 05:08:58,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:08:58,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674433719] [2021-08-27 05:08:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:08:58,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:08:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:08:58,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:08:58,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 05:08:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:08:58,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 05:08:58,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:08:58,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 05:08:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:58,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:08:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:08:58,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:08:58,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674433719] [2021-08-27 05:08:58,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674433719] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:08:58,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:08:58,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-27 05:08:58,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846056824] [2021-08-27 05:08:58,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:08:58,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:08:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:08:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:08:58,906 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:09:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:00,046 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-08-27 05:09:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 05:09:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-08-27 05:09:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:00,048 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:09:00,048 INFO L226 Difference]: Without dead ends: 119 [2021-08-27 05:09:00,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 863.7ms TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:09:00,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-27 05:09:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2021-08-27 05:09:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 49 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-08-27 05:09:00,055 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 17 [2021-08-27 05:09:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:00,056 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-08-27 05:09:00,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:09:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-08-27 05:09:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:09:00,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:00,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:00,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:00,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:00,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2028589773, now seen corresponding path program 1 times [2021-08-27 05:09:00,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:00,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696026543] [2021-08-27 05:09:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:00,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:00,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:00,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 05:09:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:00,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:09:00,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:00,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:00,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:00,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696026543] [2021-08-27 05:09:00,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696026543] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:00,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:00,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:09:00,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526723642] [2021-08-27 05:09:00,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:09:00,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:09:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:09:00,556 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:09:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:00,568 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-08-27 05:09:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:09:00,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-08-27 05:09:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:00,571 INFO L225 Difference]: With dead ends: 62 [2021-08-27 05:09:00,571 INFO L226 Difference]: Without dead ends: 62 [2021-08-27 05:09:00,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:09:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-27 05:09:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-08-27 05:09:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-08-27 05:09:00,585 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 17 [2021-08-27 05:09:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:00,586 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-08-27 05:09:00,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:09:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-08-27 05:09:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 05:09:00,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:00,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:00,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:00,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:00,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:00,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1538226398, now seen corresponding path program 1 times [2021-08-27 05:09:00,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:00,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180807469] [2021-08-27 05:09:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:00,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:00,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:00,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:00,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 05:09:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:00,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:09:00,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:01,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:01,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:01,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180807469] [2021-08-27 05:09:01,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180807469] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:01,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:01,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-08-27 05:09:01,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457632805] [2021-08-27 05:09:01,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:09:01,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:09:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:09:01,110 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 05:09:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:01,147 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-27 05:09:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:09:01,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2021-08-27 05:09:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:01,148 INFO L225 Difference]: With dead ends: 61 [2021-08-27 05:09:01,148 INFO L226 Difference]: Without dead ends: 61 [2021-08-27 05:09:01,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:09:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-27 05:09:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-08-27 05:09:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 states have internal predecessors, (56), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-08-27 05:09:01,156 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2021-08-27 05:09:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:01,156 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-08-27 05:09:01,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 05:09:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-08-27 05:09:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:09:01,157 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:01,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:01,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:01,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:01,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:01,363 INFO L82 PathProgramCache]: Analyzing trace with hash -440378001, now seen corresponding path program 1 times [2021-08-27 05:09:01,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:01,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621555412] [2021-08-27 05:09:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:01,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:01,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:01,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:01,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 05:09:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:09:01,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:01,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 05:09:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:01,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:01,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:01,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621555412] [2021-08-27 05:09:01,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621555412] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:01,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:01,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-27 05:09:01,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134567371] [2021-08-27 05:09:01,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:09:01,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:09:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:09:01,822 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 05:09:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:01,899 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-08-27 05:09:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:09:01,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-08-27 05:09:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:01,904 INFO L225 Difference]: With dead ends: 74 [2021-08-27 05:09:01,904 INFO L226 Difference]: Without dead ends: 74 [2021-08-27 05:09:01,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:09:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-27 05:09:01,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-08-27 05:09:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 05:09:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-08-27 05:09:01,909 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 19 [2021-08-27 05:09:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:01,909 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-08-27 05:09:01,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 05:09:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-08-27 05:09:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 05:09:01,910 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:01,910 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:01,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:02,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:02,117 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:02,117 INFO L82 PathProgramCache]: Analyzing trace with hash -766816059, now seen corresponding path program 1 times [2021-08-27 05:09:02,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:02,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536497019] [2021-08-27 05:09:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:02,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:02,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:02,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 05:09:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:02,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 05:09:02,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:02,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:02,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:02,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536497019] [2021-08-27 05:09:02,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536497019] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:02,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:02,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-27 05:09:02,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540440845] [2021-08-27 05:09:02,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 05:09:02,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 05:09:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:09:02,661 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:09:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:02,770 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-08-27 05:09:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:09:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-08-27 05:09:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:02,772 INFO L225 Difference]: With dead ends: 60 [2021-08-27 05:09:02,772 INFO L226 Difference]: Without dead ends: 60 [2021-08-27 05:09:02,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:09:02,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-27 05:09:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-08-27 05:09:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-08-27 05:09:02,775 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 20 [2021-08-27 05:09:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:02,775 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-08-27 05:09:02,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:09:02,775 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-08-27 05:09:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 05:09:02,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:02,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:02,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:02,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:02,985 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1360467952, now seen corresponding path program 1 times [2021-08-27 05:09:02,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:02,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37947547] [2021-08-27 05:09:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:02,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:02,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:02,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:02,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 05:09:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:09:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:03,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:03,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:03,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37947547] [2021-08-27 05:09:03,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37947547] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:03,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:03,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-27 05:09:03,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555891216] [2021-08-27 05:09:03,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 05:09:03,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 05:09:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:09:03,734 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 05:09:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:03,900 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-08-27 05:09:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:09:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-08-27 05:09:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:03,901 INFO L225 Difference]: With dead ends: 59 [2021-08-27 05:09:03,901 INFO L226 Difference]: Without dead ends: 59 [2021-08-27 05:09:03,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:09:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-27 05:09:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-08-27 05:09:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-08-27 05:09:03,904 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 22 [2021-08-27 05:09:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:03,905 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-08-27 05:09:03,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 05:09:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-08-27 05:09:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 05:09:03,906 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:03,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:03,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:04,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:04,113 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1753462742, now seen corresponding path program 1 times [2021-08-27 05:09:04,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:04,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268511800] [2021-08-27 05:09:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:04,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:04,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 05:09:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:04,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:09:04,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:04,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:09:04,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:04,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268511800] [2021-08-27 05:09:04,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268511800] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:04,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:04,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 05:09:04,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740442633] [2021-08-27 05:09:04,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:09:04,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:09:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:09:04,561 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 05:09:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:04,619 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-08-27 05:09:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:09:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-08-27 05:09:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:04,621 INFO L225 Difference]: With dead ends: 59 [2021-08-27 05:09:04,621 INFO L226 Difference]: Without dead ends: 59 [2021-08-27 05:09:04,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:09:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-27 05:09:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-08-27 05:09:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-08-27 05:09:04,624 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-08-27 05:09:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:04,624 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-08-27 05:09:04,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 05:09:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-08-27 05:09:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 05:09:04,625 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:04,625 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:04,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:04,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:04,832 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:04,832 INFO L82 PathProgramCache]: Analyzing trace with hash 64890135, now seen corresponding path program 1 times [2021-08-27 05:09:04,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:04,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654829263] [2021-08-27 05:09:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:04,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:04,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:04,833 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:04,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 05:09:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:05,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 05:09:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:09:05,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:09:05,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:05,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654829263] [2021-08-27 05:09:05,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654829263] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:09:05,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:09:05,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 05:09:05,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600933602] [2021-08-27 05:09:05,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:09:05,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:09:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:09:05,329 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 05:09:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:05,426 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-08-27 05:09:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:09:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-08-27 05:09:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:05,428 INFO L225 Difference]: With dead ends: 65 [2021-08-27 05:09:05,428 INFO L226 Difference]: Without dead ends: 59 [2021-08-27 05:09:05,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:09:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-27 05:09:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-08-27 05:09:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-08-27 05:09:05,430 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 29 [2021-08-27 05:09:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:05,430 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-08-27 05:09:05,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 05:09:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-08-27 05:09:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 05:09:05,431 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:05,431 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:05,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:05,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:05,640 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:05,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1742564328, now seen corresponding path program 1 times [2021-08-27 05:09:05,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:05,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144903518] [2021-08-27 05:09:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:05,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:05,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:05,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:05,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 05:09:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:09:05,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:09:05,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:09:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 05:09:05,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:09:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 05:09:06,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:09:06,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144903518] [2021-08-27 05:09:06,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144903518] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:09:06,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:09:06,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 05:09:06,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367926650] [2021-08-27 05:09:06,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:09:06,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:09:06,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:09:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:09:06,084 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 05:09:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:09:06,108 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-08-27 05:09:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:09:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-08-27 05:09:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:09:06,109 INFO L225 Difference]: With dead ends: 58 [2021-08-27 05:09:06,109 INFO L226 Difference]: Without dead ends: 58 [2021-08-27 05:09:06,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:09:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-27 05:09:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-08-27 05:09:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-27 05:09:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-08-27 05:09:06,112 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29 [2021-08-27 05:09:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:09:06,112 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-08-27 05:09:06,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 05:09:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-08-27 05:09:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 05:09:06,113 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:09:06,113 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:09:06,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:06,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:06,323 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-08-27 05:09:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:09:06,323 INFO L82 PathProgramCache]: Analyzing trace with hash 188620705, now seen corresponding path program 1 times [2021-08-27 05:09:06,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:09:06,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777941688] [2021-08-27 05:09:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:09:06,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:09:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:09:06,327 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:09:06,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 05:09:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:09:06,627 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:09:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:09:06,732 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 05:09:06,732 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:09:06,733 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:09:06,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr0REQUIRES_VIOLATION [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr1REQUIRES_VIOLATION [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:09:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:09:06,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 05:09:06,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:09:06,941 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:09:06,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:09:06 BoogieIcfgContainer [2021-08-27 05:09:06,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:09:06,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:09:06,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:09:06,979 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:09:06,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:08:54" (3/4) ... [2021-08-27 05:09:06,981 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 05:09:07,021 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 05:09:07,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:09:07,022 INFO L168 Benchmark]: Toolchain (without parser) took 13325.43 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 39.6 MB in the beginning and 48.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2021-08-27 05:09:07,022 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 42.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:09:07,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.58 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 35.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 05:09:07,023 INFO L168 Benchmark]: Boogie Preprocessor took 89.01 ms. Allocated memory is still 60.8 MB. Free memory was 35.0 MB in the beginning and 32.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:09:07,023 INFO L168 Benchmark]: RCFGBuilder took 597.12 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 39.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:09:07,024 INFO L168 Benchmark]: TraceAbstraction took 12114.81 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 38.6 MB in the beginning and 51.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-08-27 05:09:07,024 INFO L168 Benchmark]: Witness Printer took 42.53 ms. Allocated memory is still 107.0 MB. Free memory was 51.9 MB in the beginning and 48.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:09:07,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 42.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.58 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 35.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.01 ms. Allocated memory is still 60.8 MB. Free memory was 35.0 MB in the beginning and 32.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.12 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 39.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12114.81 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 38.6 MB in the beginning and 51.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.53 ms. Allocated memory is still 107.0 MB. Free memory was 51.9 MB in the beginning and 48.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 538]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L512] int num; [L513] int ind, newsize, i = 1; VAL [\old(i)=5, \old(ind)=6, \old(newsize)=7, \old(num)=9, i=1, ind=0, newsize=0, num=0] [L528] num = __VERIFIER_nondet_int() [L529] COND FALSE !(!(num > 0 && num < 100)) [L532] int *a = (int *)malloc(sizeof(int)); [L533] COND FALSE !(a == ((void *)0)) [L536] newsize = 0 VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=0, num=1] [L537] CALL expandArray(a) VAL [\old(newsize)=0, \old(num)=0, arg={1:0}, i=1, ind=0, newsize=0, num=1] [L515] int *a = (int *)arg; [L516] int *b = ((void *)0); VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=0, num=1] [L517] COND TRUE newsize < num [L518] newsize = newsize + 1 VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1] [L519] EXPR, FCALL realloc(a, sizeof(int) * newsize) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1, realloc(a, sizeof(int) * newsize)={1:0}] [L519] b = realloc(a, sizeof(int) * newsize) [L520] b[newsize - 1] = i VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L521] a = b VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L517] COND FALSE !(newsize < num) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L523] COND TRUE b != ((void *)0) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) [L525] return 0; VAL [\old(newsize)=0, \old(num)=0, \result={0:0}, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L537] RET expandArray(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, expandArray(a)={0:0}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 63 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 12035.4ms, OverallIterations: 15, TraceHistogramMax: 2, EmptinessCheckTime: 18.8ms, AutomataDifference: 2076.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 468 SDtfs, 411 SDslu, 944 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1036.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1280.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=9, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 97.1ms AutomataMinimizationTime, 14 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 173.1ms SsaConstructionTime, 379.9ms SatisfiabilityAnalysisTime, 3483.2ms InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 496 ConstructedInterpolants, 21 QuantifiedInterpolants, 1569 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1321 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 28 InterpolantComputations, 26 PerfectInterpolantSequences, 40/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-27 05:09:07,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...