./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.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/ldv-memsafety/memleaks_test17_2-1.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 f53154c6874c4e8820249cc34b527bbedd2b32f6 .................................................................................................................................... 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/ldv-memsafety/memleaks_test17_2-1.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 f53154c6874c4e8820249cc34b527bbedd2b32f6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:13:35,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:13:35,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:13:35,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:13:35,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:13:35,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:13:35,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:13:35,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:13:35,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:13:35,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:13:35,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:13:35,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:13:35,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:13:35,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:13:35,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:13:35,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:13:35,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:13:35,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:13:35,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:13:35,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:13:35,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:13:35,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:13:35,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:13:35,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:13:35,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:13:35,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:13:35,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:13:35,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:13:35,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:13:35,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:13:35,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:13:35,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:13:35,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:13:35,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:13:35,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:13:35,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:13:35,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:13:35,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:13:35,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:13:35,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:13:35,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:13:35,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:13:35,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:13:35,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:13:35,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:13:35,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:13:35,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:13:35,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:13:35,630 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:13:35,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:13:35,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:13:35,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:13:35,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:13:35,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:13:35,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:13:35,632 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:13:35,632 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:13:35,632 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:13:35,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:13:35,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:13:35,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:13:35,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:13:35,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:13:35,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:13:35,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:13:35,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:13:35,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:13:35,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:13:35,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:13:35,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:13:35,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:13:35,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f53154c6874c4e8820249cc34b527bbedd2b32f6 [2021-08-27 06:13:35,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:13:35,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:13:35,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:13:35,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:13:35,960 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:13:35,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-08-27 06:13:36,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13658bb71/a82cedec4871417a8e678a033b5dfb93/FLAG9a67ac075 [2021-08-27 06:13:36,428 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:13:36,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-08-27 06:13:36,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13658bb71/a82cedec4871417a8e678a033b5dfb93/FLAG9a67ac075 [2021-08-27 06:13:36,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13658bb71/a82cedec4871417a8e678a033b5dfb93 [2021-08-27 06:13:36,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:13:36,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:13:36,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:36,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:13:36,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:13:36,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:36" (1/1) ... [2021-08-27 06:13:36,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6a55c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:36, skipping insertion in model container [2021-08-27 06:13:36,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:36" (1/1) ... [2021-08-27 06:13:36,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:13:36,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:13:37,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:37,238 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 06:13:37,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@719828d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:37, skipping insertion in model container [2021-08-27 06:13:37,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:37,240 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:13:37,241 INFO L168 Benchmark]: Toolchain (without parser) took 455.58 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 48.2 MB in the end (delta: -653.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:13:37,242 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 69.2 MB. Free memory was 49.8 MB in the beginning and 49.7 MB in the end (delta: 32.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:13:37,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.50 ms. Allocated memory is still 69.2 MB. Free memory was 47.3 MB in the beginning and 48.2 MB in the end (delta: -868.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:13:37,244 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 69.2 MB. Free memory was 49.8 MB in the beginning and 49.7 MB in the end (delta: 32.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 453.50 ms. Allocated memory is still 69.2 MB. Free memory was 47.3 MB in the beginning and 48.2 MB in the end (delta: -868.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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 06:13:38,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:13:38,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:13:38,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:13:38,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:13:38,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:13:38,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:13:38,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:13:38,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:13:38,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:13:38,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:13:38,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:13:38,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:13:38,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:13:38,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:13:38,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:13:38,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:13:38,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:13:38,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:13:38,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:13:38,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:13:38,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:13:38,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:13:38,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:13:38,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:13:38,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:13:38,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:13:38,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:13:38,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:13:38,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:13:38,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:13:38,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:13:38,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:13:38,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:13:38,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:13:38,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:13:38,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:13:38,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:13:38,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:13:38,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:13:38,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:13:38,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:13:38,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:13:38,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:13:38,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:13:39,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:13:39,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:13:39,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:13:39,001 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:13:39,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:13:39,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:13:39,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:13:39,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:13:39,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:13:39,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:13:39,002 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:13:39,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:13:39,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:13:39,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:13:39,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:13:39,003 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:13:39,003 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:13:39,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:13:39,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:13:39,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:13:39,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:13:39,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:13:39,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:13:39,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:13:39,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:13:39,005 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:13:39,005 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:13:39,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:13:39,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:13:39,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f53154c6874c4e8820249cc34b527bbedd2b32f6 [2021-08-27 06:13:39,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:13:39,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:13:39,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:13:39,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:13:39,297 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:13:39,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-08-27 06:13:39,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ddd50ce/4924c70941464a9494b53142a95b1a8f/FLAGcf7fd92f7 [2021-08-27 06:13:39,875 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:13:39,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-08-27 06:13:39,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ddd50ce/4924c70941464a9494b53142a95b1a8f/FLAGcf7fd92f7 [2021-08-27 06:13:40,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ddd50ce/4924c70941464a9494b53142a95b1a8f [2021-08-27 06:13:40,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:13:40,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:13:40,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:40,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:13:40,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:13:40,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ae7d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40, skipping insertion in model container [2021-08-27 06:13:40,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:13:40,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:13:40,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:40,714 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:13:40,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:13:40,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:40,772 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:13:40,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:13:40,879 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:13:40,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40 WrapperNode [2021-08-27 06:13:40,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:13:40,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:13:40,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:13:40,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:13:40,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:13:40,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:13:40,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:13:40,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:13:40,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (1/1) ... [2021-08-27 06:13:40,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:13:40,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:13:41,010 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 06:13:41,017 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 06:13:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:13:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:13:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:13:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:13:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:13:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:13:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:13:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:13:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:13:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:13:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:13:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:13:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:13:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:13:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:13:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:13:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:13:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:13:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:13:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:13:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:13:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:13:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:13:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:13:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:13:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:13:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:13:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:13:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:13:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:13:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:13:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:13:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:13:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:13:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:13:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:13:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_unsafe_17 [2021-08-27 06:13:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-08-27 06:13:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:13:41,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:13:41,054 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:13:41,054 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:13:41,054 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:13:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:13:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:13:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:13:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:13:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:13:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:13:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:13:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:13:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:13:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:13:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:13:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:13:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:13:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:13:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:13:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:13:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:13:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:13:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:13:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:13:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:13:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:13:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:13:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:13:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:13:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:13:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:13:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:13:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:13:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:13:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:13:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:13:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:13:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:13:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:13:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:13:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:13:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:13:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:13:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:13:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:13:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:13:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:13:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:13:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:13:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:13:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:13:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:13:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:13:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:13:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:13:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:13:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:13:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:13:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:13:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:13:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:13:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:13:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:13:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:13:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:13:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:13:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:13:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:13:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_unsafe_17 [2021-08-27 06:13:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:13:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:13:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:13:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:13:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:13:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:13:41,633 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:13:41,931 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:13:42,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:13:42,256 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 06:13:42,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:13:42 BoogieIcfgContainer [2021-08-27 06:13:42,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:13:42,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:13:42,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:13:42,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:13:42,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:13:40" (1/3) ... [2021-08-27 06:13:42,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b91888d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:13:42, skipping insertion in model container [2021-08-27 06:13:42,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:13:40" (2/3) ... [2021-08-27 06:13:42,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b91888d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:13:42, skipping insertion in model container [2021-08-27 06:13:42,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:13:42" (3/3) ... [2021-08-27 06:13:42,266 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2021-08-27 06:13:42,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:13:42,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 88 error locations. [2021-08-27 06:13:42,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:13:42,311 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 06:13:42,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2021-08-27 06:13:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 116 states have internal predecessors, (132), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-08-27 06:13:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:13:42,331 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:42,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:42,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash -82149530, now seen corresponding path program 1 times [2021-08-27 06:13:42,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:42,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266256516] [2021-08-27 06:13:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:42,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:42,353 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 06:13:42,387 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 06:13:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:42,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:13:42,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:42,673 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 06:13:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:42,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:42,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:42,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266256516] [2021-08-27 06:13:42,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266256516] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:42,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:42,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:13:42,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747136912] [2021-08-27 06:13:42,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:13:42,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:13:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:42,882 INFO L87 Difference]: Start difference. First operand has 143 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 116 states have internal predecessors, (132), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:13:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:43,070 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-08-27 06:13:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:13:43,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-27 06:13:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:43,080 INFO L225 Difference]: With dead ends: 83 [2021-08-27 06:13:43,080 INFO L226 Difference]: Without dead ends: 80 [2021-08-27 06:13:43,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-27 06:13:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-08-27 06:13:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.6) internal successors, (72), 62 states have internal predecessors, (72), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:13:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2021-08-27 06:13:43,130 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 16 [2021-08-27 06:13:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:43,130 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2021-08-27 06:13:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:13:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2021-08-27 06:13:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:13:43,133 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:43,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:43,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 06:13:43,356 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 06:13:43,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:43,357 INFO L82 PathProgramCache]: Analyzing trace with hash -82149529, now seen corresponding path program 1 times [2021-08-27 06:13:43,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:43,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795532322] [2021-08-27 06:13:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:43,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:43,360 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 06:13:43,375 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 06:13:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:43,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:13:43,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:43,608 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 06:13:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:43,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:44,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:44,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795532322] [2021-08-27 06:13:44,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795532322] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:44,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:44,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 06:13:44,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737225153] [2021-08-27 06:13:44,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 06:13:44,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 06:13:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-08-27 06:13:44,458 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:45,233 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2021-08-27 06:13:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:13:45,234 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-08-27 06:13:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:45,235 INFO L225 Difference]: With dead ends: 89 [2021-08-27 06:13:45,236 INFO L226 Difference]: Without dead ends: 89 [2021-08-27 06:13:45,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 600.8ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-08-27 06:13:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-27 06:13:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2021-08-27 06:13:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.56) internal successors, (78), 67 states have internal predecessors, (78), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:13:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2021-08-27 06:13:45,245 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 16 [2021-08-27 06:13:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:45,246 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2021-08-27 06:13:45,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2021-08-27 06:13:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:13:45,247 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:45,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:45,255 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 06:13:45,447 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 06:13:45,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash 805354151, now seen corresponding path program 1 times [2021-08-27 06:13:45,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:45,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160029924] [2021-08-27 06:13:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:45,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:45,450 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 06:13:45,453 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 06:13:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:45,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:13:45,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:45,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:45,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:45,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160029924] [2021-08-27 06:13:45,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160029924] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:45,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:45,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:13:45,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595199767] [2021-08-27 06:13:45,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:13:45,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:13:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:45,830 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:13:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:45,872 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-08-27 06:13:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:13:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-27 06:13:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:45,877 INFO L225 Difference]: With dead ends: 80 [2021-08-27 06:13:45,877 INFO L226 Difference]: Without dead ends: 80 [2021-08-27 06:13:45,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-27 06:13:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-08-27 06:13:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 48 states have (on average 1.5) internal successors, (72), 64 states have internal predecessors, (72), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:13:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-08-27 06:13:45,896 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 16 [2021-08-27 06:13:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:45,896 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-08-27 06:13:45,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:13:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-08-27 06:13:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:13:45,898 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:45,899 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:45,911 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 06:13:46,111 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 06:13:46,112 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:46,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1748321483, now seen corresponding path program 1 times [2021-08-27 06:13:46,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:46,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162171620] [2021-08-27 06:13:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:46,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:46,114 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 06:13:46,115 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 06:13:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:46,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:13:46,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:46,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:46,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:46,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162171620] [2021-08-27 06:13:46,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162171620] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:46,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:46,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:13:46,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110149498] [2021-08-27 06:13:46,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:13:46,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:13:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:46,473 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:13:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:46,516 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-08-27 06:13:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:13:46,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-08-27 06:13:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:46,517 INFO L225 Difference]: With dead ends: 80 [2021-08-27 06:13:46,517 INFO L226 Difference]: Without dead ends: 80 [2021-08-27 06:13:46,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:13:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-27 06:13:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-08-27 06:13:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 64 states have internal predecessors, (71), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:13:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-08-27 06:13:46,522 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17 [2021-08-27 06:13:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:46,523 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-08-27 06:13:46,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:13:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-08-27 06:13:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:13:46,524 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:46,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:46,535 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 06:13:46,733 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 06:13:46,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash -803835478, now seen corresponding path program 1 times [2021-08-27 06:13:46,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:46,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280103735] [2021-08-27 06:13:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:46,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:46,735 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 06:13:46,736 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 06:13:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:46,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:13:46,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:47,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:47,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:47,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280103735] [2021-08-27 06:13:47,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280103735] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:13:47,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:13:47,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:13:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405434687] [2021-08-27 06:13:47,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:13:47,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:13:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:13:47,117 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:13:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:47,231 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2021-08-27 06:13:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:13:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-08-27 06:13:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:47,233 INFO L225 Difference]: With dead ends: 115 [2021-08-27 06:13:47,233 INFO L226 Difference]: Without dead ends: 110 [2021-08-27 06:13:47,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:13:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-27 06:13:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2021-08-27 06:13:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.5) internal successors, (69), 63 states have internal predecessors, (69), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:13:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-08-27 06:13:47,242 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 17 [2021-08-27 06:13:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:47,243 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-08-27 06:13:47,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:13:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-08-27 06:13:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:13:47,244 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:47,244 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:47,259 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 06:13:47,455 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 06:13:47,455 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:47,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:47,456 INFO L82 PathProgramCache]: Analyzing trace with hash -402903225, now seen corresponding path program 1 times [2021-08-27 06:13:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:47,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680614054] [2021-08-27 06:13:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:47,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:47,457 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 06:13:47,458 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 06:13:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:47,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:13:47,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:47,714 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 06:13:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:47,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:49,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:49,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680614054] [2021-08-27 06:13:49,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680614054] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:13:49,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:13:49,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-08-27 06:13:49,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265009799] [2021-08-27 06:13:49,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 06:13:49,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 06:13:49,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:13:49,069 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:50,376 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2021-08-27 06:13:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 06:13:50,377 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-08-27 06:13:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:50,377 INFO L225 Difference]: With dead ends: 93 [2021-08-27 06:13:50,378 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 06:13:50,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1304.8ms TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-08-27 06:13:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 06:13:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2021-08-27 06:13:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 75 states have internal predecessors, (83), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:13:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-08-27 06:13:50,383 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 22 [2021-08-27 06:13:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:50,383 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-08-27 06:13:50,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-08-27 06:13:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 06:13:50,384 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:50,384 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:50,396 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 06:13:50,588 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 06:13:50,589 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alloc_unsafe_17Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash 31803261, now seen corresponding path program 1 times [2021-08-27 06:13:50,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:50,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742217602] [2021-08-27 06:13:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:13:50,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:50,591 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 06:13:50,595 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 06:13:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:13:50,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:13:50,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:51,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:51,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:51,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742217602] [2021-08-27 06:13:51,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742217602] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:13:51,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:13:51,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-08-27 06:13:51,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211675256] [2021-08-27 06:13:51,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 06:13:51,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 06:13:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:13:51,247 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:51,507 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-08-27 06:13:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 06:13:51,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-08-27 06:13:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:51,508 INFO L225 Difference]: With dead ends: 94 [2021-08-27 06:13:51,508 INFO L226 Difference]: Without dead ends: 94 [2021-08-27 06:13:51,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 247.7ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-08-27 06:13:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-27 06:13:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-08-27 06:13:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 80 states have internal predecessors, (86), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:13:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-08-27 06:13:51,516 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 30 [2021-08-27 06:13:51,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:51,516 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-08-27 06:13:51,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-08-27 06:13:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 06:13:51,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:51,517 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:51,527 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 06:13:51,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:51,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2072729351, now seen corresponding path program 2 times [2021-08-27 06:13:51,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:51,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609769276] [2021-08-27 06:13:51,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:13:51,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:51,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:51,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:13:51,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:13:51,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:13:51,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 06:13:51,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:13:52,035 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 06:13:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:52,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:13:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:13:54,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:13:54,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609769276] [2021-08-27 06:13:54,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609769276] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:13:54,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:13:54,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-08-27 06:13:54,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186456459] [2021-08-27 06:13:54,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 06:13:54,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:13:54,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 06:13:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-08-27 06:13:54,944 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:13:59,374 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-08-27 06:13:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 06:13:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-08-27 06:13:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:13:59,377 INFO L225 Difference]: With dead ends: 114 [2021-08-27 06:13:59,377 INFO L226 Difference]: Without dead ends: 114 [2021-08-27 06:13:59,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 4514.5ms TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 06:13:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-27 06:13:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-08-27 06:13:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 99 states have internal predecessors, (110), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:13:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-08-27 06:13:59,384 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 34 [2021-08-27 06:13:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:13:59,384 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-08-27 06:13:59,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:13:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-08-27 06:13:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 06:13:59,386 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:13:59,386 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:13:59,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-27 06:13:59,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:13:59,596 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alloc_unsafe_17Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:13:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:13:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2071044978, now seen corresponding path program 2 times [2021-08-27 06:13:59,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:13:59,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058661461] [2021-08-27 06:13:59,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:13:59,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:13:59,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:13:59,598 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:13:59,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:13:59,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:13:59,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:13:59,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:13:59,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 06:14:00,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 06:14:00,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:00,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058661461] [2021-08-27 06:14:00,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058661461] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:14:00,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:14:00,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-27 06:14:00,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387781212] [2021-08-27 06:14:00,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:14:00,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:14:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:14:00,226 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:14:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:00,322 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2021-08-27 06:14:00,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:14:00,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-08-27 06:14:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:00,324 INFO L225 Difference]: With dead ends: 151 [2021-08-27 06:14:00,324 INFO L226 Difference]: Without dead ends: 151 [2021-08-27 06:14:00,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:14:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-27 06:14:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2021-08-27 06:14:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 105 states have internal predecessors, (119), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-27 06:14:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2021-08-27 06:14:00,328 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 45 [2021-08-27 06:14:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:00,328 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2021-08-27 06:14:00,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:14:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2021-08-27 06:14:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 06:14:00,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:00,330 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:00,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:14:00,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:00,530 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_unsafe_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:14:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:00,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2123452938, now seen corresponding path program 1 times [2021-08-27 06:14:00,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:00,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133426687] [2021-08-27 06:14:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:14:00,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:00,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:00,534 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:00,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 06:14:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:14:00,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:14:00,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:14:01,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:14:01,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:01,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133426687] [2021-08-27 06:14:01,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133426687] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:14:01,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:14:01,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-08-27 06:14:01,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182516522] [2021-08-27 06:14:01,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:14:01,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:14:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-08-27 06:14:01,716 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:14:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:02,031 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2021-08-27 06:14:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:14:02,033 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-08-27 06:14:02,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:02,034 INFO L225 Difference]: With dead ends: 119 [2021-08-27 06:14:02,034 INFO L226 Difference]: Without dead ends: 119 [2021-08-27 06:14:02,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 392.5ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-08-27 06:14:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-27 06:14:02,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-27 06:14:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 105 states have internal predecessors, (117), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-27 06:14:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-08-27 06:14:02,038 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 50 [2021-08-27 06:14:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:02,039 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-08-27 06:14:02,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:14:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-08-27 06:14:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:14:02,041 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:02,041 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:02,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 06:14:02,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:02,249 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_unsafe_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:14:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 516711894, now seen corresponding path program 2 times [2021-08-27 06:14:02,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:02,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154864650] [2021-08-27 06:14:02,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:14:02,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:02,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:02,251 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:02,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 06:14:02,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:14:02,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:14:02,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:14:02,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:02,707 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 06:14:02,985 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:14:02,986 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 06:14:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:14:03,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:14:03,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:03,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154864650] [2021-08-27 06:14:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154864650] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:14:03,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:14:03,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-08-27 06:14:03,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169850138] [2021-08-27 06:14:03,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:14:03,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:14:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:14:03,382 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:14:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:14:03,990 INFO L93 Difference]: Finished difference Result 212 states and 244 transitions. [2021-08-27 06:14:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:14:03,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-08-27 06:14:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:14:03,992 INFO L225 Difference]: With dead ends: 212 [2021-08-27 06:14:03,992 INFO L226 Difference]: Without dead ends: 210 [2021-08-27 06:14:03,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:14:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-08-27 06:14:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 137. [2021-08-27 06:14:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 119 states have internal predecessors, (136), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2021-08-27 06:14:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2021-08-27 06:14:03,998 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 56 [2021-08-27 06:14:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:14:03,999 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2021-08-27 06:14:03,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:14:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2021-08-27 06:14:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:14:04,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:14:04,001 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:14:04,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-27 06:14:04,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:14:04,215 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_unsafe_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:14:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:14:04,215 INFO L82 PathProgramCache]: Analyzing trace with hash 516711895, now seen corresponding path program 1 times [2021-08-27 06:14:04,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:14:04,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083257044] [2021-08-27 06:14:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:14:04,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:14:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:14:04,218 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:14:04,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 06:14:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:14:04,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 06:14:04,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:14:04,728 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 06:14:04,736 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 06:14:07,401 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:14:07,401 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 33 treesize of output 35 [2021-08-27 06:14:07,411 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:14:07,411 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 27 treesize of output 27 [2021-08-27 06:14:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:14:07,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:14:26,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 treesize of output 32 [2021-08-27 06:14:27,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 29 [2021-08-27 06:14:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:14:27,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:14:27,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083257044] [2021-08-27 06:14:27,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083257044] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:14:27,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:14:27,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-27 06:14:27,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576103498] [2021-08-27 06:14:27,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:14:27,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:14:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:14:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=402, Unknown=7, NotChecked=0, Total=462 [2021-08-27 06:14:27,387 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 06:18:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:03,232 INFO L93 Difference]: Finished difference Result 235 states and 271 transitions. [2021-08-27 06:18:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 06:18:03,234 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-08-27 06:18:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:03,235 INFO L225 Difference]: With dead ends: 235 [2021-08-27 06:18:03,235 INFO L226 Difference]: Without dead ends: 235 [2021-08-27 06:18:03,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 57296.4ms TimeCoverageRelationStatistics Valid=155, Invalid=944, Unknown=23, NotChecked=0, Total=1122 [2021-08-27 06:18:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-08-27 06:18:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 155. [2021-08-27 06:18:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 117 states have (on average 1.2991452991452992) internal successors, (152), 133 states have internal predecessors, (152), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:18:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2021-08-27 06:18:03,243 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 56 [2021-08-27 06:18:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:03,244 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2021-08-27 06:18:03,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 06:18:03,244 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2021-08-27 06:18:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:18:03,245 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:03,245 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 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 06:18:03,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:03,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:03,456 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_unsafe_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:18:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:03,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1656117822, now seen corresponding path program 1 times [2021-08-27 06:18:03,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:03,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963219448] [2021-08-27 06:18:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:03,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:03,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:03,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:03,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 06:18:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:03,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:18:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 06:18:04,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 06:18:04,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:04,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963219448] [2021-08-27 06:18:04,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963219448] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:04,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:04,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:18:04,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705056139] [2021-08-27 06:18:04,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:18:04,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:18:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:18:04,312 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:18:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:04,400 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2021-08-27 06:18:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:18:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-08-27 06:18:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:04,402 INFO L225 Difference]: With dead ends: 188 [2021-08-27 06:18:04,402 INFO L226 Difference]: Without dead ends: 188 [2021-08-27 06:18:04,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:18:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-08-27 06:18:04,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 159. [2021-08-27 06:18:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 121 states have (on average 1.28099173553719) internal successors, (155), 135 states have internal predecessors, (155), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:18:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 187 transitions. [2021-08-27 06:18:04,408 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 187 transitions. Word has length 58 [2021-08-27 06:18:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:04,408 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 187 transitions. [2021-08-27 06:18:04,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:18:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 187 transitions. [2021-08-27 06:18:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:18:04,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:04,410 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 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 06:18:04,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-08-27 06:18:04,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:04,621 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_unsafe_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:18:04,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash 86692513, now seen corresponding path program 1 times [2021-08-27 06:18:04,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:04,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429953685] [2021-08-27 06:18:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:04,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:04,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:04,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:04,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 06:18:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:05,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:18:05,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-27 06:18:05,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-27 06:18:05,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:05,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429953685] [2021-08-27 06:18:05,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429953685] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:18:05,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:05,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-27 06:18:05,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633602418] [2021-08-27 06:18:05,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:18:05,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:18:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:18:05,538 INFO L87 Difference]: Start difference. First operand 159 states and 187 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:18:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:05,687 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2021-08-27 06:18:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:18:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-08-27 06:18:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:05,689 INFO L225 Difference]: With dead ends: 159 [2021-08-27 06:18:05,689 INFO L226 Difference]: Without dead ends: 159 [2021-08-27 06:18:05,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:18:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-27 06:18:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-08-27 06:18:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 135 states have internal predecessors, (154), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:18:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2021-08-27 06:18:05,695 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 58 [2021-08-27 06:18:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:05,695 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2021-08-27 06:18:05,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:18:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2021-08-27 06:18:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:18:05,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:05,696 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:05,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:05,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:05,905 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:18:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash 526435975, now seen corresponding path program 3 times [2021-08-27 06:18:05,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:05,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790796992] [2021-08-27 06:18:05,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 06:18:05,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:05,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:05,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:05,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 06:18:06,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-08-27 06:18:06,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:18:06,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-27 06:18:06,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:06,752 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 06:18:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:08,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:18:21,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:21,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790796992] [2021-08-27 06:18:21,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790796992] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:18:21,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:18:21,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 42 [2021-08-27 06:18:21,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384278785] [2021-08-27 06:18:21,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-27 06:18:21,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:18:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-27 06:18:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 06:18:21,270 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 42 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:18:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:18:26,845 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2021-08-27 06:18:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 06:18:26,846 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-08-27 06:18:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:18:26,847 INFO L225 Difference]: With dead ends: 145 [2021-08-27 06:18:26,847 INFO L226 Difference]: Without dead ends: 145 [2021-08-27 06:18:26,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 11124.2ms TimeCoverageRelationStatistics Valid=589, Invalid=2491, Unknown=0, NotChecked=0, Total=3080 [2021-08-27 06:18:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-27 06:18:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-08-27 06:18:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 108 states have (on average 1.25) internal successors, (135), 121 states have internal predecessors, (135), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2021-08-27 06:18:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 167 transitions. [2021-08-27 06:18:26,854 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 167 transitions. Word has length 58 [2021-08-27 06:18:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:18:26,854 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 167 transitions. [2021-08-27 06:18:26,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:18:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 167 transitions. [2021-08-27 06:18:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-27 06:18:26,855 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:18:26,856 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:18:26,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:27,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:18:27,067 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-08-27 06:18:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:18:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash -160851315, now seen corresponding path program 1 times [2021-08-27 06:18:27,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:18:27,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164461590] [2021-08-27 06:18:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:27,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:18:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:18:27,069 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:18:27,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 06:18:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:18:27,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:27,871 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 06:18:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:18:28,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:28,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:18:28,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164461590] [2021-08-27 06:18:28,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:18:28,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1287435696] [2021-08-27 06:18:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:28,590 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:18:28,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:18:28,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:18:28,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-08-27 06:18:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:29,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:18:29,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:29,622 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 06:18:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:18:30,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:30,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:18:30,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747281510] [2021-08-27 06:18:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:18:30,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:18:30,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:18:30,316 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 06:18:30,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 06:18:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:18:31,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:18:31,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:18:31,193 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 06:18:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:18:31,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:18:31,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:18:31,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:18:31,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 06:18:31,834 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 06:18:31,834 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 06:18:31,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-08-27 06:18:31,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:18:31,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:18:31,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:18:31,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:18:31,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:18:31,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err0REQUIRES_VIOLATION [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err1REQUIRES_VIOLATION [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err2REQUIRES_VIOLATION [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err3REQUIRES_VIOLATION [2021-08-27 06:18:31,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-08-27 06:18:31,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-08-27 06:18:31,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:18:31,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:32,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-08-27 06:18:32,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-27 06:18:32,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:18:32,475 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:18:32,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:18:32 BoogieIcfgContainer [2021-08-27 06:18:32,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:18:32,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:18:32,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:18:32,486 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:18:32,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:13:42" (3/4) ... [2021-08-27 06:18:32,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:18:32,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:18:32,491 INFO L168 Benchmark]: Toolchain (without parser) took 292137.34 ms. Allocated memory was 65.0 MB in the beginning and 146.8 MB in the end (delta: 81.8 MB). Free memory was 43.7 MB in the beginning and 49.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 76.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:32,492 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:18:32,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.61 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 45.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:32,492 INFO L168 Benchmark]: Boogie Preprocessor took 81.92 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 40.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:32,493 INFO L168 Benchmark]: RCFGBuilder took 1294.02 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 40.2 MB in the beginning and 51.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:32,493 INFO L168 Benchmark]: TraceAbstraction took 290224.87 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 83.7 kB). Peak memory consumption was 62.4 MB. Max. memory is 16.1 GB. [2021-08-27 06:18:32,493 INFO L168 Benchmark]: Witness Printer took 5.17 ms. Allocated memory is still 146.8 MB. Free memory was 50.1 MB in the beginning and 49.2 MB in the end (delta: 891.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:18:32,495 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 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.61 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 45.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.92 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 40.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1294.02 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 40.2 MB in the beginning and 51.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 290224.87 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 83.7 kB). Peak memory consumption was 62.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.17 ms. Allocated memory is still 146.8 MB. Free memory was 50.1 MB in the beginning and 49.2 MB in the end (delta: 891.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 778]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L794] CALL entry_point() [L782] int i; [L783] int len = 10; [L784] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L784] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L784] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L785] COND FALSE !(!array) [L786] i=0 [L786] COND TRUE i=0) [L773] return - -3; [L789] RET alloc_unsafe_17(array, len) [L790] CALL free_17(array, len) [L776] int i; [L777] i=0 [L777] COND TRUE i