./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86b203c3a804c103d90401bd32cfcff28939b920 ....................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86b203c3a804c103d90401bd32cfcff28939b920 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:44:46,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:44:46,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:44:46,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:44:46,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:44:46,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:44:46,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:44:46,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:44:46,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:44:46,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:44:46,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:44:46,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:44:46,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:44:46,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:44:46,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:44:46,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:44:46,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:44:46,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:44:46,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:44:46,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:44:46,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:44:46,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:44:46,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:44:46,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:44:46,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:44:46,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:44:46,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:44:46,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:44:46,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:44:46,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:44:46,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:44:46,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:44:46,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:44:46,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:44:46,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:44:46,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:44:46,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:44:46,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:44:46,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:44:46,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:44:46,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:44:46,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:44:47,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:44:47,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:44:47,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:44:47,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:44:47,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:44:47,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:44:47,021 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:44:47,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:44:47,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:44:47,022 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:44:47,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:44:47,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:44:47,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:44:47,023 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:44:47,024 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:44:47,024 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:44:47,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:44:47,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:44:47,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:44:47,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:44:47,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:44:47,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:44:47,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:44:47,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:44:47,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:44:47,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:44:47,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:44:47,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:44:47,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:44:47,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2021-08-27 07:44:47,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:44:47,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:44:47,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:44:47,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:44:47,337 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:44:47,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-08-27 07:44:47,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7b6a76d/c966592f33fb48449fc12d09755df443/FLAGfbfa248da [2021-08-27 07:44:47,836 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:44:47,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-08-27 07:44:47,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7b6a76d/c966592f33fb48449fc12d09755df443/FLAGfbfa248da [2021-08-27 07:44:48,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7b6a76d/c966592f33fb48449fc12d09755df443 [2021-08-27 07:44:48,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:44:48,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:44:48,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:44:48,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:44:48,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:44:48,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:44:48" (1/1) ... [2021-08-27 07:44:48,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189c0150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:48, skipping insertion in model container [2021-08-27 07:44:48,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:44:48" (1/1) ... [2021-08-27 07:44:48,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:44:48,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:44:48,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:44:48,545 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 07:44:48,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f79aa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:48, skipping insertion in model container [2021-08-27 07:44:48,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:44:48,547 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 07:44:48,548 INFO L168 Benchmark]: Toolchain (without parser) took 313.51 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 44.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:44:48,549 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:44:48,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.93 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 44.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:44:48,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.93 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 44.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:44:50,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:44:50,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:44:50,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:44:50,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:44:50,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:44:50,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:44:50,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:44:50,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:44:50,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:44:50,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:44:50,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:44:50,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:44:50,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:44:50,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:44:50,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:44:50,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:44:50,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:44:50,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:44:50,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:44:50,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:44:50,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:44:50,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:44:50,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:44:50,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:44:50,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:44:50,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:44:50,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:44:50,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:44:50,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:44:50,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:44:50,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:44:50,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:44:50,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:44:50,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:44:50,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:44:50,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:44:50,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:44:50,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:44:50,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:44:50,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:44:50,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 07:44:50,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:44:50,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:44:50,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:44:50,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:44:50,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:44:50,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:44:50,335 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:44:50,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:44:50,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:44:50,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:44:50,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:44:50,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:44:50,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:44:50,337 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:44:50,337 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:44:50,337 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:44:50,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:44:50,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:44:50,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 07:44:50,338 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 07:44:50,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:44:50,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:44:50,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:44:50,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:44:50,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:44:50,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:44:50,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:44:50,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:44:50,340 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 07:44:50,340 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 07:44:50,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:44:50,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 07:44:50,341 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2021-08-27 07:44:50,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:44:50,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:44:50,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:44:50,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:44:50,657 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:44:50,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-08-27 07:44:50,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1086d6db/e546bfb9d7da4647abe301c6968170fb/FLAG55c24bcb8 [2021-08-27 07:44:51,209 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:44:51,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-08-27 07:44:51,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1086d6db/e546bfb9d7da4647abe301c6968170fb/FLAG55c24bcb8 [2021-08-27 07:44:51,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1086d6db/e546bfb9d7da4647abe301c6968170fb [2021-08-27 07:44:51,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:44:51,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:44:51,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:44:51,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:44:51,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:44:51,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b81cfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51, skipping insertion in model container [2021-08-27 07:44:51,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:44:51,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:44:51,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:44:51,813 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 07:44:51,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:44:51,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:44:51,859 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:44:51,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:44:51,928 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:44:51,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51 WrapperNode [2021-08-27 07:44:51,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:44:51,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:44:51,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:44:51,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:44:51,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:51,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:44:51,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:44:51,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:44:51,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:44:51,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (1/1) ... [2021-08-27 07:44:52,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:44:52,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:44:52,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 07:44:52,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 07:44:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:44:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:44:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 07:44:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 07:44:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 07:44:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 07:44:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-08-27 07:44:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:44:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 07:44:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 07:44:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 07:44:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 07:44:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 07:44:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 07:44:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 07:44:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 07:44:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 07:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 07:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 07:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 07:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 07:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 07:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 07:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 07:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 07:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 07:44:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 07:44:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 07:44:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 07:44:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 07:44:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 07:44:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 07:44:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 07:44:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:44:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 07:44:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 07:44:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 07:44:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 07:44:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 07:44:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 07:44:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 07:44:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 07:44:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 07:44:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 07:44:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 07:44:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 07:44:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 07:44:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 07:44:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 07:44:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 07:44:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 07:44:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 07:44:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 07:44:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 07:44:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 07:44:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 07:44:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 07:44:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 07:44:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 07:44:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 07:44:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-08-27 07:44:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 07:44:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:44:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 07:44:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 07:44:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:44:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:44:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:44:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 07:44:52,413 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 07:44:52,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:44:52,572 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 07:44:52,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:44:52 BoogieIcfgContainer [2021-08-27 07:44:52,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:44:52,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:44:52,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:44:52,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:44:52,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:44:51" (1/3) ... [2021-08-27 07:44:52,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bead53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:44:52, skipping insertion in model container [2021-08-27 07:44:52,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:44:51" (2/3) ... [2021-08-27 07:44:52,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bead53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:44:52, skipping insertion in model container [2021-08-27 07:44:52,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:44:52" (3/3) ... [2021-08-27 07:44:52,583 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2021-08-27 07:44:52,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:44:52,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-08-27 07:44:52,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:44:52,640 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 07:44:52,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-08-27 07:44:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 39 states have internal predecessors, (40), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 07:44:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 07:44:52,661 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:44:52,661 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:44:52,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:44:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:44:52,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1901459912, now seen corresponding path program 1 times [2021-08-27 07:44:52,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:44:52,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422612687] [2021-08-27 07:44:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:44:52,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:44:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:44:52,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:44:52,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 07:44:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:44:52,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:44:52,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:44:52,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:44:53,095 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 07:44:53,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 26 [2021-08-27 07:44:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:44:53,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:44:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:44:53,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:44:53,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422612687] [2021-08-27 07:44:53,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422612687] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 07:44:53,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:44:53,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-08-27 07:44:53,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170338597] [2021-08-27 07:44:53,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:44:53,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:44:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:44:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:44:53,495 INFO L87 Difference]: Start difference. First operand has 48 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 39 states have internal predecessors, (40), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:44:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:44:53,905 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-08-27 07:44:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:44:53,907 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-08-27 07:44:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:44:53,912 INFO L225 Difference]: With dead ends: 44 [2021-08-27 07:44:53,912 INFO L226 Difference]: Without dead ends: 38 [2021-08-27 07:44:53,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 222.3ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:44:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-27 07:44:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-08-27 07:44:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 30 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:44:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-27 07:44:53,940 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 19 [2021-08-27 07:44:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:44:53,941 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-27 07:44:53,942 INFO L471 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:44:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-27 07:44:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 07:44:53,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:44:53,943 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:44:53,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 07:44:54,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:44:54,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:44:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:44:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1901459911, now seen corresponding path program 1 times [2021-08-27 07:44:54,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:44:54,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860386651] [2021-08-27 07:44:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:44:54,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:44:54,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:44:54,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:44:54,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 07:44:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:44:54,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 07:44:54,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:44:54,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:44:54,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:44:54,650 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:44:54,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 38 [2021-08-27 07:44:54,661 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 07:44:54,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 35 [2021-08-27 07:44:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:44:54,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:45:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:45:13,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:45:13,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860386651] [2021-08-27 07:45:13,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860386651] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 07:45:13,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:45:13,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-27 07:45:13,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25745887] [2021-08-27 07:45:13,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 07:45:13,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:45:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 07:45:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=197, Unknown=5, NotChecked=0, Total=240 [2021-08-27 07:45:13,340 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:45:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:45:39,260 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-08-27 07:45:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:45:39,261 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-08-27 07:45:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:45:39,262 INFO L225 Difference]: With dead ends: 32 [2021-08-27 07:45:39,262 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 07:45:39,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 17373.7ms TimeCoverageRelationStatistics Valid=74, Invalid=341, Unknown=5, NotChecked=0, Total=420 [2021-08-27 07:45:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 07:45:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-27 07:45:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:45:39,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-08-27 07:45:39,267 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2021-08-27 07:45:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:45:39,267 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-08-27 07:45:39,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 07:45:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-08-27 07:45:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 07:45:39,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:45:39,268 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:45:39,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-27 07:45:39,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:45:39,477 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:45:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:45:39,478 INFO L82 PathProgramCache]: Analyzing trace with hash 294926047, now seen corresponding path program 1 times [2021-08-27 07:45:39,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:45:39,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516505750] [2021-08-27 07:45:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:45:39,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:45:39,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:45:39,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:45:39,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 07:45:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:45:39,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 07:45:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:45:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:45:40,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:45:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:45:40,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:45:40,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516505750] [2021-08-27 07:45:40,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516505750] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 07:45:40,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:45:40,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-08-27 07:45:40,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944288840] [2021-08-27 07:45:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:45:40,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:45:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:45:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:45:40,355 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-27 07:45:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:45:40,587 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-08-27 07:45:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:45:40,588 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2021-08-27 07:45:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:45:40,589 INFO L225 Difference]: With dead ends: 32 [2021-08-27 07:45:40,589 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 07:45:40,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 219.2ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:45:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 07:45:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-08-27 07:45:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:45:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-27 07:45:40,593 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2021-08-27 07:45:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:45:40,593 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-27 07:45:40,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-27 07:45:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-27 07:45:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 07:45:40,594 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:45:40,594 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:45:40,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:45:40,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:45:40,795 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:45:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:45:40,796 INFO L82 PathProgramCache]: Analyzing trace with hash -43907359, now seen corresponding path program 1 times [2021-08-27 07:45:40,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:45:40,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019820805] [2021-08-27 07:45:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:45:40,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:45:40,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:45:40,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:45:40,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 07:45:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:45:40,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 07:45:40,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:45:41,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 07:45:41,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 11 [2021-08-27 07:45:41,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 07:45:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:45:41,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:45:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:45:41,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:45:41,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019820805] [2021-08-27 07:45:41,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019820805] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:45:41,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:45:41,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-08-27 07:45:41,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870820171] [2021-08-27 07:45:41,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:45:41,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:45:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:45:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:45:41,351 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:45:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:45:41,513 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-08-27 07:45:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:45:41,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-08-27 07:45:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:45:41,514 INFO L225 Difference]: With dead ends: 30 [2021-08-27 07:45:41,514 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 07:45:41,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:45:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 07:45:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-27 07:45:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:45:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-08-27 07:45:41,518 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2021-08-27 07:45:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:45:41,519 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-08-27 07:45:41,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:45:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-08-27 07:45:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 07:45:41,520 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:45:41,520 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:45:41,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 07:45:41,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:45:41,732 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:45:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:45:41,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1361128031, now seen corresponding path program 1 times [2021-08-27 07:45:41,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:45:41,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544182715] [2021-08-27 07:45:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:45:41,733 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:45:41,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:45:41,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:45:41,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 07:45:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:45:41,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:45:41,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:45:42,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-08-27 07:45:42,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 11 [2021-08-27 07:45:42,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-08-27 07:45:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:45:42,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:45:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:45:43,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:45:43,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544182715] [2021-08-27 07:45:43,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544182715] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 07:45:43,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:45:43,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2021-08-27 07:45:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011890573] [2021-08-27 07:45:43,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 07:45:43,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:45:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 07:45:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-08-27 07:45:43,104 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:45:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:45:43,910 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-08-27 07:45:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:45:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2021-08-27 07:45:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:45:43,912 INFO L225 Difference]: With dead ends: 30 [2021-08-27 07:45:43,912 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 07:45:43,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 662.5ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-08-27 07:45:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 07:45:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-08-27 07:45:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:45:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-27 07:45:43,916 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 30 [2021-08-27 07:45:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:45:43,916 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-27 07:45:43,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:45:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-27 07:45:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-27 07:45:43,917 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:45:43,917 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:45:43,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 07:45:44,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:45:44,121 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:45:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:45:44,121 INFO L82 PathProgramCache]: Analyzing trace with hash 754704099, now seen corresponding path program 1 times [2021-08-27 07:45:44,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:45:44,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189550744] [2021-08-27 07:45:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:45:44,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:45:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:45:44,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:45:44,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 07:45:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:45:44,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 07:45:44,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:45:44,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:45:44,588 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 07:45:44,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2021-08-27 07:45:44,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-08-27 07:45:44,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 35 treesize of output 19 [2021-08-27 07:45:44,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 15 [2021-08-27 07:45:45,074 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-27 07:45:45,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 43 [2021-08-27 07:45:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:45:45,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:45:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:45:47,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:45:47,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189550744] [2021-08-27 07:45:47,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189550744] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 07:45:47,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:45:47,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 23 [2021-08-27 07:45:47,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173501442] [2021-08-27 07:45:47,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:45:47,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 07:45:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:45:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=484, Unknown=1, NotChecked=0, Total=552 [2021-08-27 07:45:47,858 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 07:45:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:45:48,345 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-08-27 07:45:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 07:45:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2021-08-27 07:45:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:45:48,347 INFO L225 Difference]: With dead ends: 28 [2021-08-27 07:45:48,347 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 07:45:48,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2798.9ms TimeCoverageRelationStatistics Valid=98, Invalid=657, Unknown=1, NotChecked=0, Total=756 [2021-08-27 07:45:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 07:45:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-27 07:45:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:45:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-08-27 07:45:48,350 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 31 [2021-08-27 07:45:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:45:48,350 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-08-27 07:45:48,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 07:45:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-08-27 07:45:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-27 07:45:48,351 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:45:48,351 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:45:48,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 07:45:48,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 07:45:48,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 10 more)] === [2021-08-27 07:45:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:45:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1920990692, now seen corresponding path program 1 times [2021-08-27 07:45:48,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 07:45:48,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995225676] [2021-08-27 07:45:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:45:48,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 07:45:48,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 07:45:48,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 07:45:48,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 07:45:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:45:48,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 07:45:48,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:45:48,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:45:49,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 34 [2021-08-27 07:45:49,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 54 treesize of output 34 [2021-08-27 07:45:49,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 30 [2021-08-27 07:45:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:45:52,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:46:09,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 07:46:09,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995225676] [2021-08-27 07:46:09,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 07:46:09,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1655701871] [2021-08-27 07:46:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:46:09,612 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 07:46:09,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 07:46:09,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 07:46:09,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-08-27 07:46:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:46:10,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 07:46:10,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:46:10,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:46:10,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 34 [2021-08-27 07:46:10,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 54 treesize of output 34 [2021-08-27 07:46:10,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 30 [2021-08-27 07:46:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:46:10,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:46:25,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 07:46:25,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694827182] [2021-08-27 07:46:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:46:25,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:46:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:46:25,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:46:25,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 07:46:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:46:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 07:46:26,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:46:26,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 30 [2021-08-27 07:46:26,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 46 treesize of output 30 [2021-08-27 07:46:26,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 26 [2021-08-27 07:46:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 07:46:31,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 07:46:51,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 07:46:51,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:46:51,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 07:46:51,403 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 07:46:51,403 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 07:46:51,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:46:51,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 07:46:51,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:46:51,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:46:51,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:46:51,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:46:51,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 07:46:51,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-08-27 07:46:51,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 07:46:51,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 07:46:52,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:46:52,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:46:52,036 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 07:46:52,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:46:52 BoogieIcfgContainer [2021-08-27 07:46:52,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:46:52,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:46:52,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:46:52,043 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:46:52,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:44:52" (3/4) ... [2021-08-27 07:46:52,048 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 07:46:52,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:46:52,049 INFO L168 Benchmark]: Toolchain (without parser) took 120491.43 ms. Allocated memory was 58.7 MB in the beginning and 92.3 MB in the end (delta: 33.6 MB). Free memory was 36.6 MB in the beginning and 55.5 MB in the end (delta: -18.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:52,049 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:46:52,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.40 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 34.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:52,050 INFO L168 Benchmark]: Boogie Preprocessor took 58.17 ms. Allocated memory is still 58.7 MB. Free memory was 34.4 MB in the beginning and 31.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:52,050 INFO L168 Benchmark]: RCFGBuilder took 582.77 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 31.8 MB in the beginning and 43.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:52,050 INFO L168 Benchmark]: TraceAbstraction took 119466.87 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.2 MB in the beginning and 55.9 MB in the end (delta: -12.7 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:52,051 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 92.3 MB. Free memory was 55.9 MB in the beginning and 55.5 MB in the end (delta: 379.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:46:52,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.40 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 34.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.17 ms. Allocated memory is still 58.7 MB. Free memory was 34.4 MB in the beginning and 31.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 582.77 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 31.8 MB in the beginning and 43.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 119466.87 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.2 MB in the beginning and 55.9 MB in the end (delta: -12.7 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.23 ms. Allocated memory is still 92.3 MB. Free memory was 55.9 MB in the beginning and 55.5 MB in the end (delta: 379.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, 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) [L566] return temp; [L569] RET, EXPR alloc_node() [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) [L566] return temp; [L570] RET, EXPR alloc_node() [L570] s->next = alloc_node() [L571] *s = *s [L572] EXPR s->next [L572] struct node* t = s->next; [L573] free(s) [L573] free(s) [L573] free(s) [L574] free(t) [L574] free(t) [L574] free(t) [L575] return 0; - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 61 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 119402.3ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 13.6ms, AutomataDifference: 28054.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 105 SDtfs, 169 SDslu, 495 SDs, 0 SdLazy, 949 SolverSat, 55 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 25663.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 216 SyntacticMatches, 11 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 21394.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 58.0ms SsaConstructionTime, 136.4ms SatisfiabilityAnalysisTime, 25350.6ms InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 298 ConstructedInterpolants, 71 QuantifiedInterpolants, 2821 SizeOfPredicates, 28 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 32/60 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 [2021-08-27 07:46:52,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...