./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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/list-ext3-properties/sll_shallow_copy-2.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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:24:41,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:24:41,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:24:41,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:24:41,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:24:41,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:24:41,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:24:41,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:24:41,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:24:41,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:24:41,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:24:41,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:24:41,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:24:41,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:24:41,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:24:41,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:24:41,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:24:41,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:24:41,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:24:41,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:24:41,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:24:41,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:24:41,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:24:41,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:24:41,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:24:41,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:24:41,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:24:41,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:24:41,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:24:41,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:24:41,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:24:41,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:24:41,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:24:41,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:24:41,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:24:41,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:24:41,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:24:41,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:24:41,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:24:41,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:24:41,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:24:41,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 02:24:41,345 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:24:41,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:24:41,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:24:41,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:24:41,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:24:41,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:24:41,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:24:41,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:24:41,347 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:24:41,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:24:41,348 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:24:41,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:24:41,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:24:41,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 02:24:41,350 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:24:41,350 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:24:41,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:24:41,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:24:41,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:24:41,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:24:41,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:24:41,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:24:41,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 02:24:41,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 02:24:41,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:24:41,351 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:24:41,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:24:41,352 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:24:41,352 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2023-02-14 02:24:41,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:24:41,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:24:41,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:24:41,529 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:24:41,529 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:24:41,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2023-02-14 02:24:42,521 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:24:42,727 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:24:42,728 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2023-02-14 02:24:42,740 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a92be580/87244bc7507241338e57d7129535c931/FLAGb6c0a0170 [2023-02-14 02:24:42,756 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a92be580/87244bc7507241338e57d7129535c931 [2023-02-14 02:24:42,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:24:42,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:24:42,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:24:42,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:24:42,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:24:42,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:24:42" (1/1) ... [2023-02-14 02:24:42,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4967b01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:42, skipping insertion in model container [2023-02-14 02:24:42,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:24:42" (1/1) ... [2023-02-14 02:24:42,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:24:42,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:24:43,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:24:43,033 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-14 02:24:43,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f1d8952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:43, skipping insertion in model container [2023-02-14 02:24:43,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:24:43,035 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-14 02:24:43,037 INFO L158 Benchmark]: Toolchain (without parser) took 276.41ms. Allocated memory is still 117.4MB. Free memory was 55.5MB in the beginning and 85.8MB in the end (delta: -30.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-02-14 02:24:43,037 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:24:43,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.41ms. Allocated memory is still 117.4MB. Free memory was 55.3MB in the beginning and 85.8MB in the end (delta: -30.5MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-02-14 02:24:43,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.41ms. Allocated memory is still 117.4MB. Free memory was 55.3MB in the beginning and 85.8MB in the end (delta: -30.5MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/list-ext3-properties/sll_shallow_copy-2.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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:24:44,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:24:44,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:24:44,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:24:44,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:24:44,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:24:44,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:24:44,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:24:44,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:24:44,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:24:44,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:24:44,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:24:44,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:24:44,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:24:44,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:24:44,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:24:44,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:24:44,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:24:44,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:24:44,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:24:44,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:24:44,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:24:44,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:24:44,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:24:44,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:24:44,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:24:44,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:24:44,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:24:44,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:24:44,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:24:44,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:24:44,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:24:44,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:24:44,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:24:44,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:24:44,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:24:44,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:24:44,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:24:44,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:24:44,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:24:44,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:24:44,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-14 02:24:44,869 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:24:44,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:24:44,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:24:44,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:24:44,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:24:44,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:24:44,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:24:44,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:24:44,872 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:24:44,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:24:44,873 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:24:44,873 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:24:44,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:24:44,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-14 02:24:44,874 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-14 02:24:44,875 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:24:44,875 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:24:44,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:24:44,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:24:44,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:24:44,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:24:44,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:24:44,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:24:44,876 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-14 02:24:44,876 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-14 02:24:44,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:24:44,876 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:24:44,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:24:44,877 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-14 02:24:44,877 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:24:44,877 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2023-02-14 02:24:45,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:24:45,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:24:45,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:24:45,164 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:24:45,164 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:24:45,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2023-02-14 02:24:46,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:24:46,385 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:24:46,386 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2023-02-14 02:24:46,394 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ada4764/1fb2bf8fa9b14334ba081873bd2785b7/FLAGb0debc1bc [2023-02-14 02:24:46,404 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ada4764/1fb2bf8fa9b14334ba081873bd2785b7 [2023-02-14 02:24:46,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:24:46,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:24:46,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:24:46,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:24:46,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:24:46,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fc86ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46, skipping insertion in model container [2023-02-14 02:24:46,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:24:46,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:24:46,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:24:46,623 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-14 02:24:46,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:24:46,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:24:46,669 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 02:24:46,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:24:46,730 INFO L208 MainTranslator]: Completed translation [2023-02-14 02:24:46,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46 WrapperNode [2023-02-14 02:24:46,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:24:46,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 02:24:46,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 02:24:46,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 02:24:46,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,769 INFO L138 Inliner]: procedures = 115, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2023-02-14 02:24:46,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 02:24:46,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 02:24:46,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 02:24:46,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 02:24:46,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 02:24:46,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 02:24:46,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 02:24:46,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 02:24:46,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (1/1) ... [2023-02-14 02:24:46,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:24:46,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:24:46,837 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) [2023-02-14 02:24:46,844 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 [2023-02-14 02:24:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2023-02-14 02:24:46,871 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2023-02-14 02:24:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 02:24:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 02:24:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 02:24:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 02:24:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 02:24:46,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 02:24:46,974 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 02:24:46,976 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 02:24:47,133 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 02:24:47,138 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 02:24:47,138 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 02:24:47,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:24:47 BoogieIcfgContainer [2023-02-14 02:24:47,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 02:24:47,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 02:24:47,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 02:24:47,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 02:24:47,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:24:46" (1/3) ... [2023-02-14 02:24:47,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d521dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:24:47, skipping insertion in model container [2023-02-14 02:24:47,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:24:46" (2/3) ... [2023-02-14 02:24:47,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d521dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:24:47, skipping insertion in model container [2023-02-14 02:24:47,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:24:47" (3/3) ... [2023-02-14 02:24:47,146 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2023-02-14 02:24:47,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 02:24:47,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-02-14 02:24:47,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 02:24:47,214 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c5a199c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 02:24:47,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-02-14 02:24:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:24:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 02:24:47,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:24:47,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:24:47,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-02-14 02:24:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:24:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625018, now seen corresponding path program 1 times [2023-02-14 02:24:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:24:47,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933689555] [2023-02-14 02:24:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:47,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:47,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:24:47,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:24:47,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-14 02:24:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:24:47,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 02:24:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:24:47,488 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-14 02:24:47,595 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |alloc_node_~temp~0#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-02-14 02:24:47,642 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-14 02:24:47,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-14 02:24:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-14 02:24:47,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:24:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:24:47,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:24:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933689555] [2023-02-14 02:24:47,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933689555] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:24:47,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:24:47,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-02-14 02:24:47,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815692703] [2023-02-14 02:24:47,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:24:47,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 02:24:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:24:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 02:24:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-02-14 02:24:47,929 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:24:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:24:48,140 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-02-14 02:24:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 02:24:48,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2023-02-14 02:24:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:24:48,146 INFO L225 Difference]: With dead ends: 31 [2023-02-14 02:24:48,146 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 02:24:48,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-02-14 02:24:48,149 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:24:48,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 57 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2023-02-14 02:24:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 02:24:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-14 02:24:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:24:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-02-14 02:24:48,171 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2023-02-14 02:24:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:24:48,172 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-02-14 02:24:48,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:24:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-02-14 02:24:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 02:24:48,173 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:24:48,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:24:48,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-14 02:24:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:48,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-02-14 02:24:48,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:24:48,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625017, now seen corresponding path program 1 times [2023-02-14 02:24:48,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:24:48,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004054064] [2023-02-14 02:24:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:48,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:48,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:24:48,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:24:48,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-14 02:24:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:24:48,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 02:24:48,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:24:48,454 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 02:24:48,469 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-14 02:24:48,584 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (exists ((v_ArrVal_15 (_ BitVec 32))) (= (store |c_old(#length)| |alloc_node_~temp~0#1.base| v_ArrVal_15) |c_#length|)))) is different from true [2023-02-14 02:24:48,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:24:48,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-14 02:24:48,624 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 02:24:48,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-02-14 02:24:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-14 02:24:48,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:24:48,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:24:48,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004054064] [2023-02-14 02:24:48,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004054064] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:24:48,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [200877212] [2023-02-14 02:24:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:48,811 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:24:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:24:48,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-14 02:24:48,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-02-14 02:24:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:24:48,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 02:24:48,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:24:48,927 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 02:24:48,932 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-14 02:24:48,977 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (exists ((v_ArrVal_25 (_ BitVec 32))) (= (store |c_old(#length)| |alloc_node_~temp~0#1.base| v_ArrVal_25) |c_#length|)))) is different from true [2023-02-14 02:24:49,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:24:49,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-14 02:24:49,011 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 02:24:49,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-02-14 02:24:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-14 02:24:49,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:24:49,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [200877212] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:24:49,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:24:49,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-14 02:24:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195916821] [2023-02-14 02:24:49,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:24:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 02:24:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:24:49,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 02:24:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=71, Unknown=2, NotChecked=34, Total=132 [2023-02-14 02:24:49,123 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:24:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:24:49,394 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2023-02-14 02:24:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 02:24:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2023-02-14 02:24:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:24:49,395 INFO L225 Difference]: With dead ends: 24 [2023-02-14 02:24:49,395 INFO L226 Difference]: Without dead ends: 24 [2023-02-14 02:24:49,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=105, Unknown=2, NotChecked=42, Total=182 [2023-02-14 02:24:49,396 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:24:49,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 25 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2023-02-14 02:24:49,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-14 02:24:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-14 02:24:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:24:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2023-02-14 02:24:49,399 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2023-02-14 02:24:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:24:49,399 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2023-02-14 02:24:49,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:24:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2023-02-14 02:24:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 02:24:49,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:24:49,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:24:49,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-02-14 02:24:49,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-02-14 02:24:49,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:49,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-02-14 02:24:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:24:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash 78968552, now seen corresponding path program 1 times [2023-02-14 02:24:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:24:49,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804980957] [2023-02-14 02:24:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:49,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:24:49,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:24:49,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-14 02:24:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:24:49,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 02:24:49,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:24:49,847 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-14 02:24:49,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-14 02:24:49,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-14 02:24:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:24:49,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:24:49,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:24:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804980957] [2023-02-14 02:24:49,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804980957] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:24:49,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:24:49,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 02:24:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330442003] [2023-02-14 02:24:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:24:49,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 02:24:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:24:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 02:24:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-14 02:24:49,890 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 02:24:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:24:49,982 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2023-02-14 02:24:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 02:24:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-02-14 02:24:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:24:49,983 INFO L225 Difference]: With dead ends: 23 [2023-02-14 02:24:49,983 INFO L226 Difference]: Without dead ends: 23 [2023-02-14 02:24:49,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-14 02:24:49,984 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:24:49,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:24:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-14 02:24:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-14 02:24:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:24:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-02-14 02:24:49,987 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2023-02-14 02:24:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:24:49,987 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-02-14 02:24:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 02:24:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-02-14 02:24:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 02:24:49,987 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:24:49,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:24:49,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-14 02:24:50,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:50,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-02-14 02:24:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:24:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 78968553, now seen corresponding path program 1 times [2023-02-14 02:24:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:24:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325334035] [2023-02-14 02:24:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:50,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:50,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:24:50,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:24:50,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-14 02:24:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:24:50,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 02:24:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:24:50,241 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 02:24:50,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-14 02:24:50,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-14 02:24:50,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 02:24:50,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-14 02:24:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:24:50,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:24:50,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:24:50,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325334035] [2023-02-14 02:24:50,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325334035] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:24:50,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:24:50,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 02:24:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062336070] [2023-02-14 02:24:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:24:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 02:24:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:24:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 02:24:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-14 02:24:50,327 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 02:24:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:24:50,412 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2023-02-14 02:24:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 02:24:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-02-14 02:24:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:24:50,413 INFO L225 Difference]: With dead ends: 22 [2023-02-14 02:24:50,413 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 02:24:50,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-14 02:24:50,414 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:24:50,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:24:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 02:24:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-14 02:24:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:24:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-02-14 02:24:50,416 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2023-02-14 02:24:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:24:50,417 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-02-14 02:24:50,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 02:24:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-02-14 02:24:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 02:24:50,417 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:24:50,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:24:50,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-14 02:24:50,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:50,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-02-14 02:24:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:24:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 570997579, now seen corresponding path program 1 times [2023-02-14 02:24:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:24:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497260375] [2023-02-14 02:24:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:50,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:24:50,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:24:50,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-14 02:24:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:24:50,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 02:24:50,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:24:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:24:50,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:24:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:24:50,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:24:50,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497260375] [2023-02-14 02:24:50,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497260375] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:24:50,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:24:50,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-02-14 02:24:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754396790] [2023-02-14 02:24:50,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:24:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 02:24:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:24:50,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 02:24:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-02-14 02:24:50,937 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 02:24:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:24:51,036 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2023-02-14 02:24:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 02:24:51,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2023-02-14 02:24:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:24:51,038 INFO L225 Difference]: With dead ends: 22 [2023-02-14 02:24:51,038 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 02:24:51,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-14 02:24:51,038 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:24:51,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:24:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 02:24:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-02-14 02:24:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:24:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2023-02-14 02:24:51,040 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2023-02-14 02:24:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:24:51,041 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2023-02-14 02:24:51,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 02:24:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2023-02-14 02:24:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 02:24:51,041 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:24:51,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:24:51,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-14 02:24:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:51,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-02-14 02:24:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:24:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1027138706, now seen corresponding path program 1 times [2023-02-14 02:24:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:24:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427168814] [2023-02-14 02:24:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:24:51,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:24:51,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:24:51,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-14 02:24:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 02:24:51,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 02:24:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 02:24:51,340 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-14 02:24:51,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-14 02:24:51,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-02-14 02:24:51,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-02-14 02:24:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-02-14 02:24:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-02-14 02:24:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-02-14 02:24:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-02-14 02:24:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-02-14 02:24:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-02-14 02:24:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-02-14 02:24:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2023-02-14 02:24:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2023-02-14 02:24:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2023-02-14 02:24:51,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-14 02:24:51,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:24:51,547 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-02-14 02:24:51,549 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 02:24:51,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 02:24:51 BoogieIcfgContainer [2023-02-14 02:24:51,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 02:24:51,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 02:24:51,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 02:24:51,565 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 02:24:51,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:24:47" (3/4) ... [2023-02-14 02:24:51,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-14 02:24:51,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 02:24:51,567 INFO L158 Benchmark]: Toolchain (without parser) took 5159.27ms. Allocated memory was 67.1MB in the beginning and 109.1MB in the end (delta: 41.9MB). Free memory was 39.0MB in the beginning and 62.7MB in the end (delta: -23.7MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-02-14 02:24:51,567 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 50.3MB. Free memory was 26.8MB in the beginning and 26.8MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:24:51,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.86ms. Allocated memory is still 67.1MB. Free memory was 38.8MB in the beginning and 37.1MB in the end (delta: 1.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-02-14 02:24:51,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.48ms. Allocated memory is still 67.1MB. Free memory was 36.9MB in the beginning and 35.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 02:24:51,568 INFO L158 Benchmark]: Boogie Preprocessor took 28.94ms. Allocated memory is still 67.1MB. Free memory was 35.2MB in the beginning and 33.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 02:24:51,568 INFO L158 Benchmark]: RCFGBuilder took 338.43ms. Allocated memory is still 67.1MB. Free memory was 33.6MB in the beginning and 36.6MB in the end (delta: -2.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-02-14 02:24:51,568 INFO L158 Benchmark]: TraceAbstraction took 4422.60ms. Allocated memory was 67.1MB in the beginning and 109.1MB in the end (delta: 41.9MB). Free memory was 36.0MB in the beginning and 62.7MB in the end (delta: -26.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-02-14 02:24:51,568 INFO L158 Benchmark]: Witness Printer took 2.22ms. Allocated memory is still 109.1MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:24:51,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 50.3MB. Free memory was 26.8MB in the beginning and 26.8MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.86ms. Allocated memory is still 67.1MB. Free memory was 38.8MB in the beginning and 37.1MB in the end (delta: 1.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.48ms. Allocated memory is still 67.1MB. Free memory was 36.9MB in the beginning and 35.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.94ms. Allocated memory is still 67.1MB. Free memory was 35.2MB in the beginning and 33.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.43ms. Allocated memory is still 67.1MB. Free memory was 33.6MB in the beginning and 36.6MB in the end (delta: -2.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4422.60ms. Allocated memory was 67.1MB in the beginning and 109.1MB in the end (delta: 41.9MB). Free memory was 36.0MB in the beginning and 62.7MB in the end (delta: -26.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Witness Printer took 2.22ms. Allocated memory is still 109.1MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={1:0}] [L566] return temp; VAL [\result={1:0}, temp={1:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={1:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}, temp={2:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L570] s->next = alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L571] EXPR s->next VAL [s={1:0}, s->next={2:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={1:0}, s->next={2:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 432 IncrementalHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 67 mSDtfsCounter, 432 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 42, 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, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 140 ConstructedInterpolants, 22 QuantifiedInterpolants, 950 SizeOfPredicates, 22 NumberOfNonLiveVariables, 363 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/40 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 could not prove your program: unable to determine feasibility of some traces [2023-02-14 02:24:51,586 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample