./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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/memsafety-ext3/naturalNumbers1.c -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 932f76685ed1816d93a388d0ab1addae9c51483a .................................................................................................................................. 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/memsafety-ext3/naturalNumbers1.c -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 932f76685ed1816d93a388d0ab1addae9c51483a ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:56:07,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:56:07,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:56:07,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:56:07,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:56:07,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:56:07,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:56:07,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:56:07,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:56:07,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:56:07,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:56:07,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:56:07,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:56:07,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:56:07,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:56:07,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:56:07,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:56:07,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:56:07,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:56:07,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:56:07,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:56:07,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:56:07,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:56:07,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:56:07,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:56:07,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:56:07,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:56:07,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:56:07,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:56:07,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:56:07,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:56:07,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:56:07,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:56:07,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:56:07,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:56:07,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:56:07,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:56:07,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:56:07,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:56:07,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:56:07,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:56:07,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:56:07,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:56:07,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:56:07,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:56:07,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:56:07,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:56:07,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:56:07,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:56:07,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:56:07,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:56:07,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:56:07,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:56:07,894 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:56:07,894 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:56:07,894 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:56:07,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:56:07,895 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:56:07,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:56:07,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:56:07,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:56:07,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:56:07,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:56:07,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:56:07,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:56:07,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:56:07,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:56:07,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:56:07,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:56:07,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:56:07,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-10-26 03:56:08,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:56:08,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:56:08,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:56:08,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:56:08,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:56:08,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-26 03:56:08,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a0b3ce1/a75e9925327f48eca81e86bca2e2e35f/FLAGcd01918bb [2020-10-26 03:56:09,068 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:56:09,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-26 03:56:09,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a0b3ce1/a75e9925327f48eca81e86bca2e2e35f/FLAGcd01918bb [2020-10-26 03:56:09,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a0b3ce1/a75e9925327f48eca81e86bca2e2e35f [2020-10-26 03:56:09,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:56:09,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:56:09,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:09,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:56:09,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:56:09,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:09" (1/1) ... [2020-10-26 03:56:09,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb8fcf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:09, skipping insertion in model container [2020-10-26 03:56:09,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:09" (1/1) ... [2020-10-26 03:56:09,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:56:09,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:56:09,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:09,665 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) [2020-10-26 03:56:09,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b2ae2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:09, skipping insertion in model container [2020-10-26 03:56:09,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:09,667 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-26 03:56:09,670 INFO L168 Benchmark]: Toolchain (without parser) took 234.36 ms. Allocated memory is still 44.0 MB. Free memory was 21.8 MB in the beginning and 24.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:09,671 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 33.6 MB. Free memory was 15.9 MB in the beginning and 15.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:09,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.01 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 24.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:09,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 33.6 MB. Free memory was 15.9 MB in the beginning and 15.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 220.01 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 24.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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 0.2.0-5485861 [2020-10-26 03:56:12,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:56:12,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:56:12,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:56:12,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:56:12,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:56:12,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:56:12,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:56:12,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:56:12,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:56:12,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:56:12,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:56:12,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:56:12,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:56:12,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:56:12,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:56:12,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:56:12,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:56:12,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:56:12,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:56:12,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:56:12,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:56:12,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:56:12,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:56:12,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:56:12,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:56:12,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:56:12,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:56:12,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:56:12,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:56:12,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:56:12,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:56:12,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:56:12,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:56:12,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:56:12,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:56:12,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:56:12,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:56:12,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:56:12,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:56:12,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:56:12,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-26 03:56:12,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:56:12,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:56:12,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:56:12,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:56:12,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:56:12,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:56:12,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:56:12,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:56:12,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:56:12,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:56:12,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:56:12,397 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:56:12,397 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:56:12,397 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:56:12,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:56:12,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:56:12,398 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-26 03:56:12,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-26 03:56:12,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:56:12,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:56:12,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:56:12,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:56:12,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:56:12,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:56:12,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:56:12,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:56:12,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:56:12,401 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-26 03:56:12,402 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-26 03:56:12,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:56:12,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-26 03:56:12,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-10-26 03:56:12,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:56:12,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:56:12,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:56:12,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:56:12,833 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:56:12,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-26 03:56:12,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34be261d/cd3a7874d73f4367b7dbfba7c5e197fd/FLAGe22fc5db9 [2020-10-26 03:56:13,515 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:56:13,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-26 03:56:13,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34be261d/cd3a7874d73f4367b7dbfba7c5e197fd/FLAGe22fc5db9 [2020-10-26 03:56:13,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34be261d/cd3a7874d73f4367b7dbfba7c5e197fd [2020-10-26 03:56:13,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:56:13,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:56:13,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:13,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:56:13,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:56:13,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:13" (1/1) ... [2020-10-26 03:56:13,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dc3b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:13, skipping insertion in model container [2020-10-26 03:56:13,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:13" (1/1) ... [2020-10-26 03:56:13,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:56:13,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:56:14,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:14,170 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-26 03:56:14,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:56:14,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:14,185 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:56:14,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:14,225 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:56:14,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14 WrapperNode [2020-10-26 03:56:14,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:14,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:56:14,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:56:14,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:56:14,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... [2020-10-26 03:56:14,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:56:14,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:56:14,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:56:14,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:56:14,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:56:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:56:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:56:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2020-10-26 03:56:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:56:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2020-10-26 03:56:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-26 03:56:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:56:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:56:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-26 03:56:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:56:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:56:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:56:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-26 03:56:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-26 03:56:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-26 03:56:14,633 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:56:14,634 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 03:56:14,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:14 BoogieIcfgContainer [2020-10-26 03:56:14,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:56:14,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:56:14,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:56:14,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:56:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:56:13" (1/3) ... [2020-10-26 03:56:14,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e13f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:56:14, skipping insertion in model container [2020-10-26 03:56:14,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:14" (2/3) ... [2020-10-26 03:56:14,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e13f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:56:14, skipping insertion in model container [2020-10-26 03:56:14,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:14" (3/3) ... [2020-10-26 03:56:14,653 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-10-26 03:56:14,669 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:56:14,675 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-26 03:56:14,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-26 03:56:14,721 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:56:14,721 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:56:14,724 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:56:14,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:56:14,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:56:14,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:56:14,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:56:14,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:56:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-26 03:56:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:56:14,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:14,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:14,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-26 03:56:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:14,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2020-10-26 03:56:14,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:56:14,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206831561] [2020-10-26 03:56:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-26 03:56:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:15,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:56:15,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:15,134 INFO L384 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 [2020-10-26 03:56:15,135 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:56:15,145 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:56:15,145 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:56:15,146 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:56:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:15,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:56:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:15,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206831561] [2020-10-26 03:56:15,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:15,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-26 03:56:15,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265819628] [2020-10-26 03:56:15,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:56:15,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:56:15,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:56:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:56:15,300 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-26 03:56:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:15,423 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-26 03:56:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:56:15,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 03:56:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:15,443 INFO L225 Difference]: With dead ends: 21 [2020-10-26 03:56:15,444 INFO L226 Difference]: Without dead ends: 18 [2020-10-26 03:56:15,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:56:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-26 03:56:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-26 03:56:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-26 03:56:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-26 03:56:15,492 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-10-26 03:56:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:15,493 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-26 03:56:15,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:56:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-26 03:56:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:56:15,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:15,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:15,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-26 03:56:15,713 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-26 03:56:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:15,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2020-10-26 03:56:15,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:56:15,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906695550] [2020-10-26 03:56:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-26 03:56:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:15,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:56:15,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:15,776 INFO L384 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 [2020-10-26 03:56:15,776 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:56:15,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:56:15,785 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:56:15,785 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:56:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:15,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:56:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906695550] [2020-10-26 03:56:16,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:16,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-26 03:56:16,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773910592] [2020-10-26 03:56:16,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:56:16,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:56:16,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:56:16,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:56:16,132 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-10-26 03:56:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:16,466 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-26 03:56:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:56:16,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-26 03:56:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:16,471 INFO L225 Difference]: With dead ends: 28 [2020-10-26 03:56:16,472 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 03:56:16,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:56:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 03:56:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-26 03:56:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-26 03:56:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-26 03:56:16,480 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2020-10-26 03:56:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:16,480 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-26 03:56:16,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:56:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-26 03:56:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:56:16,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:16,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:16,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-26 03:56:16,700 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-26 03:56:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2020-10-26 03:56:16,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:56:16,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700278050] [2020-10-26 03:56:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-26 03:56:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:16,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 03:56:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:16,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:56:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:17,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700278050] [2020-10-26 03:56:17,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:17,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2020-10-26 03:56:17,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080803474] [2020-10-26 03:56:17,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:56:17,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:56:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:56:17,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:56:17,324 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2020-10-26 03:56:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:17,642 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-10-26 03:56:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:56:17,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-26 03:56:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:17,646 INFO L225 Difference]: With dead ends: 25 [2020-10-26 03:56:17,646 INFO L226 Difference]: Without dead ends: 23 [2020-10-26 03:56:17,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 03:56:17,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-26 03:56:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-26 03:56:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-26 03:56:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-26 03:56:17,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-26 03:56:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:17,653 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-26 03:56:17,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:56:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-26 03:56:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:56:17,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:17,654 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:17,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-26 03:56:17,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-26 03:56:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:17,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2020-10-26 03:56:17,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:56:17,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102729191] [2020-10-26 03:56:17,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-26 03:56:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:56:17,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:56:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:56:17,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:56:18,004 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-26 03:56:18,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:56:18,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-26 03:56:18,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:56:18 BoogieIcfgContainer [2020-10-26 03:56:18,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:56:18,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:56:18,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:56:18,239 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:56:18,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:14" (3/4) ... [2020-10-26 03:56:18,243 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:56:18,300 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:56:18,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:56:18,302 INFO L168 Benchmark]: Toolchain (without parser) took 4406.13 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 16.9 MB in the beginning and 19.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:18,303 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:18,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.68 ms. Allocated memory is still 39.8 MB. Free memory was 16.3 MB in the beginning and 17.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:18,305 INFO L168 Benchmark]: Boogie Preprocessor took 43.15 ms. Allocated memory is still 39.8 MB. Free memory was 17.3 MB in the beginning and 15.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:18,306 INFO L168 Benchmark]: RCFGBuilder took 364.94 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.6 MB in the beginning and 20.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:18,307 INFO L168 Benchmark]: TraceAbstraction took 3598.79 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 20.5 MB in the beginning and 21.0 MB in the end (delta: -526.2 kB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:18,307 INFO L168 Benchmark]: Witness Printer took 61.79 ms. Allocated memory is still 58.7 MB. Free memory was 20.8 MB in the beginning and 19.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:18,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.68 ms. Allocated memory is still 39.8 MB. Free memory was 16.3 MB in the beginning and 17.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.15 ms. Allocated memory is still 39.8 MB. Free memory was 17.3 MB in the beginning and 15.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 364.94 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.6 MB in the beginning and 20.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3598.79 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 20.5 MB in the beginning and 21.0 MB in the end (delta: -526.2 kB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.79 ms. Allocated memory is still 58.7 MB. Free memory was 20.8 MB in the beginning and 19.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; VAL [numbers={3:0}] [L15] CALL areNatural((int*) numbers) VAL [numbers={3:0}] [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 63 SDslu, 105 SDs, 0 SdLazy, 110 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 8294 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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! Received shutdown request...