./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg --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 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg --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 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:57:41,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:57:41,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:57:41,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:57:41,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:57:41,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:57:41,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:57:41,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:57:41,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:57:41,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:57:41,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:57:41,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:57:41,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:57:41,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:57:41,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:57:41,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:57:41,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:57:41,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:57:41,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:57:41,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:57:41,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:57:41,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:57:41,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:57:41,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:57:41,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:57:41,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:57:41,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:57:41,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:57:41,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:57:41,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:57:41,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:57:41,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:57:41,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:57:41,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:57:41,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:57:41,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:57:41,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:57:41,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:57:41,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:57:41,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:57:41,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:57:41,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:57:41,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:57:41,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:57:41,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:57:41,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:57:41,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:57:41,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:57:41,760 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:57:41,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:57:41,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:57:41,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:57:41,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:57:41,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:57:41,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:57:41,763 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:57:41,763 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:57:41,763 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:57:41,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:57:41,764 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:57:41,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:57:41,764 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:57:41,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:57:41,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:57:41,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:57:41,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:41,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:57:41,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:57:41,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:57:41,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:57:41,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:57:41,768 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c [2021-10-28 09:57:42,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:57:42,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:57:42,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:57:42,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:57:42,048 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:57:42,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-28 09:57:42,132 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/24ea3bb48/1e61d1fd46fc4037b1e07f8a924a3c67/FLAG17a623b7d [2021-10-28 09:57:42,735 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:57:42,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-28 09:57:42,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/24ea3bb48/1e61d1fd46fc4037b1e07f8a924a3c67/FLAG17a623b7d [2021-10-28 09:57:43,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/24ea3bb48/1e61d1fd46fc4037b1e07f8a924a3c67 [2021-10-28 09:57:43,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:57:43,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:57:43,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:43,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:57:43,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:57:43,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:43" (1/1) ... [2021-10-28 09:57:43,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9be717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:43, skipping insertion in model container [2021-10-28 09:57:43,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:43" (1/1) ... [2021-10-28 09:57:43,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:57:43,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:57:43,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:43,575 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) [2021-10-28 09:57:43,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d134482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:43, skipping insertion in model container [2021-10-28 09:57:43,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:43,577 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:57:43,581 INFO L168 Benchmark]: Toolchain (without parser) took 570.31 ms. Allocated memory is still 94.4 MB. Free memory was 50.3 MB in the beginning and 64.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:43,582 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:57:43,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.07 ms. Allocated memory is still 94.4 MB. Free memory was 50.1 MB in the beginning and 64.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:43,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 565.07 ms. Allocated memory is still 94.4 MB. Free memory was 50.1 MB in the beginning and 64.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.4 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-b2eff8b [2021-10-28 09:57:45,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:57:45,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:57:45,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:57:45,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:57:45,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:57:45,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:57:45,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:57:45,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:57:45,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:57:45,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:57:45,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:57:45,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:57:45,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:57:45,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:57:45,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:57:45,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:57:45,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:57:45,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:57:45,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:57:45,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:57:45,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:57:45,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:57:45,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:57:45,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:57:45,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:57:45,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:57:45,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:57:45,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:57:45,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:57:45,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:57:45,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:57:45,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:57:45,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:57:45,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:57:45,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:57:45,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:57:45,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:57:45,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:57:45,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:57:45,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:57:45,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:57:45,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:57:45,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:57:45,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:57:45,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:57:45,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:57:45,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:57:45,992 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:57:45,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:57:45,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:57:45,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:57:45,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:57:45,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:57:45,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:57:45,995 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:57:45,995 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:57:45,996 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:57:45,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:57:45,996 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:57:45,996 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:57:45,997 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:57:45,997 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:57:45,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:57:45,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:57:45,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:57:45,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:57:45,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:45,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:57:45,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:57:45,999 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:57:45,999 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:57:46,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:57:46,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:57:46,000 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c [2021-10-28 09:57:46,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:57:46,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:57:46,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:57:46,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:57:46,459 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:57:46,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-28 09:57:46,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/0d0f79714/35d2b87c94e04802a155820db07c53cf/FLAG0754c1fd4 [2021-10-28 09:57:47,205 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:57:47,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2021-10-28 09:57:47,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/0d0f79714/35d2b87c94e04802a155820db07c53cf/FLAG0754c1fd4 [2021-10-28 09:57:47,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/data/0d0f79714/35d2b87c94e04802a155820db07c53cf [2021-10-28 09:57:47,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:57:47,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:57:47,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:47,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:57:47,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:57:47,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:47" (1/1) ... [2021-10-28 09:57:47,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f52849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:47, skipping insertion in model container [2021-10-28 09:57:47,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:47" (1/1) ... [2021-10-28 09:57:47,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:57:47,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:57:48,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:48,097 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:57:48,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:57:48,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:48,151 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:57:48,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:48,241 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:57:48,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48 WrapperNode [2021-10-28 09:57:48,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:48,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:57:48,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:57:48,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:57:48,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:57:48,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:57:48,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:57:48,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:57:48,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (1/1) ... [2021-10-28 09:57:48,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:57:48,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:57:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:57:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 09:57:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:57:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:57:48,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:57:48,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:57:48,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:57:48,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:57:48,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-28 09:57:48,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-28 09:57:48,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-28 09:57:48,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-28 09:57:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-28 09:57:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-28 09:57:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-28 09:57:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-28 09:57:48,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-28 09:57:48,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-28 09:57:48,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-28 09:57:48,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-28 09:57:48,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-28 09:57:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-28 09:57:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-28 09:57:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-28 09:57:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-28 09:57:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-28 09:57:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-28 09:57:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-28 09:57:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-28 09:57:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-28 09:57:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-28 09:57:48,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-28 09:57:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-28 09:57:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-28 09:57:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-28 09:57:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-28 09:57:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-28 09:57:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-28 09:57:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-28 09:57:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-28 09:57:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-28 09:57:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure f_22_get [2021-10-28 09:57:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure f_22_put [2021-10-28 09:57:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-28 09:57:48,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:57:48,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-28 09:57:48,453 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-28 09:57:48,453 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-28 09:57:48,454 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:57:48,454 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:57:48,454 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:57:48,454 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:57:48,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:57:48,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:57:48,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:57:48,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:57:48,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:57:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:57:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:57:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:57:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:57:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:57:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:57:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:57:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:57:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:57:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:57:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:57:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:57:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:57:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:57:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:57:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:57:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:57:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:57:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:57:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:57:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:57:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:57:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:57:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:57:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:57:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:57:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:57:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:57:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:57:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:57:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:57:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:57:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:57:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:57:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:57:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:57:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:57:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:57:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:57:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:57:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:57:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:57:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:57:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:57:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:57:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:57:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:57:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:57:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:57:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:57:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:57:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:57:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:57:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:57:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:57:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:57:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:57:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:57:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:57:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:57:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:57:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:57:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:57:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:57:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:57:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:57:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:57:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:57:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:57:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:57:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:57:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:57:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:57:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:57:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:57:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:57:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:57:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:57:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:57:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:57:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:57:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:57:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:57:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:57:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:57:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:57:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:57:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:57:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:57:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:57:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:57:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:57:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:57:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:57:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:57:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:57:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:57:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:57:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-28 09:57:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:57:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-28 09:57:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-28 09:57:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:57:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:57:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-28 09:57:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:57:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-28 09:57:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-28 09:57:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-28 09:57:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:57:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-28 09:57:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-28 09:57:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-28 09:57:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:57:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-28 09:57:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-28 09:57:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-28 09:57:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-28 09:57:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-28 09:57:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-28 09:57:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:57:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-28 09:57:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-28 09:57:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-28 09:57:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-28 09:57:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-28 09:57:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:57:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:57:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-28 09:57:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-28 09:57:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 09:57:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-28 09:57:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-28 09:57:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-28 09:57:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-28 09:57:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-28 09:57:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-28 09:57:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-28 09:57:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-28 09:57:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-28 09:57:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-28 09:57:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-28 09:57:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-28 09:57:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-28 09:57:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-28 09:57:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure f_22_get [2021-10-28 09:57:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure f_22_put [2021-10-28 09:57:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:57:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-28 09:57:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-28 09:57:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-28 09:57:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-28 09:57:49,194 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:57:49,558 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:57:49,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:57:49,863 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:57:49,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:49 BoogieIcfgContainer [2021-10-28 09:57:49,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:57:49,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:57:49,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:57:49,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:57:49,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:57:47" (1/3) ... [2021-10-28 09:57:49,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f84b310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:57:49, skipping insertion in model container [2021-10-28 09:57:49,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:48" (2/3) ... [2021-10-28 09:57:49,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f84b310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:57:49, skipping insertion in model container [2021-10-28 09:57:49,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:49" (3/3) ... [2021-10-28 09:57:49,887 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_5.i [2021-10-28 09:57:49,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:57:49,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-28 09:57:49,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:57:49,962 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, mAutomataTypeConcurrency=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 [2021-10-28 09:57:49,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-28 09:57:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 115 states have internal predecessors, (124), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-28 09:57:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:57:49,997 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:49,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:49,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -604206848, now seen corresponding path program 1 times [2021-10-28 09:57:50,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:50,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678222569] [2021-10-28 09:57:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:50,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:50,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:50,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:50,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:57:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:50,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:57:50,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:50,389 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 [2021-10-28 09:57:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:50,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:50,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:50,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678222569] [2021-10-28 09:57:50,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678222569] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:50,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:50,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:57:50,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257577034] [2021-10-28 09:57:50,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:50,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:50,606 INFO L87 Difference]: Start difference. First operand has 155 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 115 states have internal predecessors, (124), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:57:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:50,889 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2021-10-28 09:57:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:50,891 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 09:57:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:50,903 INFO L225 Difference]: With dead ends: 137 [2021-10-28 09:57:50,903 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 09:57:50,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 09:57:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2021-10-28 09:57:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 92 states have internal predecessors, (99), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2021-10-28 09:57:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-10-28 09:57:50,984 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 17 [2021-10-28 09:57:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:50,985 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-10-28 09:57:50,985 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:57:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-10-28 09:57:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:57:50,987 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:50,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:51,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:51,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:51,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_createErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash -604206847, now seen corresponding path program 1 times [2021-10-28 09:57:51,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:51,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994602149] [2021-10-28 09:57:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:51,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:51,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:51,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:57:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:51,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:57:51,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:51,439 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 [2021-10-28 09:57:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:51,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:51,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:51,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994602149] [2021-10-28 09:57:51,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994602149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:51,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:51,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:57:51,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29388215] [2021-10-28 09:57:51,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:57:51,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:57:51,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:57:51,922 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:57:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:52,443 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-28 09:57:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:57:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-10-28 09:57:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:52,447 INFO L225 Difference]: With dead ends: 133 [2021-10-28 09:57:52,448 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 09:57:52,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:57:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 09:57:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2021-10-28 09:57:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.4) internal successors, (98), 92 states have internal predecessors, (98), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2021-10-28 09:57:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2021-10-28 09:57:52,460 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 17 [2021-10-28 09:57:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:52,461 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2021-10-28 09:57:52,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:57:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2021-10-28 09:57:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:57:52,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:52,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:52,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 09:57:52,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:52,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -575577697, now seen corresponding path program 1 times [2021-10-28 09:57:52,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:52,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902412368] [2021-10-28 09:57:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:52,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:52,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:52,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:57:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:52,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:57:52,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:52,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:53,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:53,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902412368] [2021-10-28 09:57:53,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902412368] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:53,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:53,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:57:53,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881474801] [2021-10-28 09:57:53,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:53,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:53,027 INFO L87 Difference]: Start difference. First operand 128 states and 138 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:57:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:53,075 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2021-10-28 09:57:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:53,076 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 09:57:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:53,078 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:57:53,078 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:57:53,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:57:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-28 09:57:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 89 states have internal predecessors, (95), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-28 09:57:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-10-28 09:57:53,095 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 17 [2021-10-28 09:57:53,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:53,096 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-10-28 09:57:53,096 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:57:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-10-28 09:57:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:57:53,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:53,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:53,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:53,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:53,305 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash -811306797, now seen corresponding path program 1 times [2021-10-28 09:57:53,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:53,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342715937] [2021-10-28 09:57:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:53,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:53,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:53,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:53,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:57:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:53,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:57:53,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:53,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:53,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:53,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342715937] [2021-10-28 09:57:53,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342715937] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:53,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:53,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:57:53,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496055796] [2021-10-28 09:57:53,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:53,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:53,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:53,724 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:57:53,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:53,754 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2021-10-28 09:57:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:53,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-10-28 09:57:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:53,758 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:57:53,758 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:57:53,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:57:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-28 09:57:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 89 states have internal predecessors, (94), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2021-10-28 09:57:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-10-28 09:57:53,778 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 31 [2021-10-28 09:57:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:53,778 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-10-28 09:57:53,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:57:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-10-28 09:57:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:57:53,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:53,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:53,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:53,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:53,994 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1220131022, now seen corresponding path program 1 times [2021-10-28 09:57:53,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:53,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128696240] [2021-10-28 09:57:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:53,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:53,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:53,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:57:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:54,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:57:54,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:54,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:54,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:54,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128696240] [2021-10-28 09:57:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128696240] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:54,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:54,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-28 09:57:54,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239161032] [2021-10-28 09:57:54,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:57:54,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:57:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:57:54,546 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:57:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:54,634 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2021-10-28 09:57:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:57:54,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-10-28 09:57:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:54,636 INFO L225 Difference]: With dead ends: 142 [2021-10-28 09:57:54,636 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 09:57:54,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:57:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 09:57:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-10-28 09:57:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 97 states have internal predecessors, (101), 22 states have call successors, (22), 20 states have call predecessors, (22), 21 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-28 09:57:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2021-10-28 09:57:54,662 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 31 [2021-10-28 09:57:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2021-10-28 09:57:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:57:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2021-10-28 09:57:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:57:54,664 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:54,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:54,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:54,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:54,871 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 536113147, now seen corresponding path program 1 times [2021-10-28 09:57:54,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:54,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841284808] [2021-10-28 09:57:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:54,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:54,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:54,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:57:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:55,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:57:55,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:55,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:55,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:55,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841284808] [2021-10-28 09:57:55,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841284808] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:55,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:55,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:57:55,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235044674] [2021-10-28 09:57:55,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:57:55,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:57:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:57:55,267 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:57:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:55,308 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2021-10-28 09:57:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:57:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-10-28 09:57:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:55,310 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:57:55,310 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 09:57:55,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:57:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 09:57:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-10-28 09:57:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 99 states have internal predecessors, (103), 22 states have call successors, (22), 20 states have call predecessors, (22), 21 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-28 09:57:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2021-10-28 09:57:55,319 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 32 [2021-10-28 09:57:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:55,319 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2021-10-28 09:57:55,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:57:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2021-10-28 09:57:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:57:55,321 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:55,321 INFO L513 BasicCegarLoop]: trace histogram [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, 1] [2021-10-28 09:57:55,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:55,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:55,544 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash 690495131, now seen corresponding path program 1 times [2021-10-28 09:57:55,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:55,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924429105] [2021-10-28 09:57:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:55,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:55,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:55,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:55,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:57:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:55,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:57:55,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:55,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:56,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924429105] [2021-10-28 09:57:56,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924429105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:57:56,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:56,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-28 09:57:56,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680967010] [2021-10-28 09:57:56,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:57:56,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:57:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:57:56,151 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:57:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:56,334 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2021-10-28 09:57:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:57:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-10-28 09:57:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:56,336 INFO L225 Difference]: With dead ends: 148 [2021-10-28 09:57:56,337 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 09:57:56,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:57:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 09:57:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-28 09:57:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 103 states have internal predecessors, (107), 22 states have call successors, (22), 20 states have call predecessors, (22), 21 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-28 09:57:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-10-28 09:57:56,344 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 34 [2021-10-28 09:57:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:56,344 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-10-28 09:57:56,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:57:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-10-28 09:57:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:57:56,346 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:56,346 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:56,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:56,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:56,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash 780110635, now seen corresponding path program 1 times [2021-10-28 09:57:56,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:56,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348469193] [2021-10-28 09:57:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:56,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:56,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:56,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:56,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:57:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:56,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:57:56,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:57:56,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:57:57,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:57,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348469193] [2021-10-28 09:57:57,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348469193] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:57,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:57,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:57:57,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126442470] [2021-10-28 09:57:57,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:57:57,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:57,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:57:57,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:57:57,184 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 09:57:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:57,331 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2021-10-28 09:57:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:57:57,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 36 [2021-10-28 09:57:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:57,333 INFO L225 Difference]: With dead ends: 157 [2021-10-28 09:57:57,333 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 09:57:57,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:57:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 09:57:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2021-10-28 09:57:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 92 states have internal predecessors, (96), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:57:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-10-28 09:57:57,339 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 36 [2021-10-28 09:57:57,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:57,339 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-10-28 09:57:57,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 09:57:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-10-28 09:57:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:57:57,341 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:57,341 INFO L513 BasicCegarLoop]: trace histogram [6, 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, 1] [2021-10-28 09:57:57,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:57,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:57,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2002385957, now seen corresponding path program 2 times [2021-10-28 09:57:57,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:57,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045482334] [2021-10-28 09:57:57,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:57:57,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:57,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:57,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:57,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:57:57,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:57:57,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:57:57,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:57:57,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:57,865 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 [2021-10-28 09:57:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:57:58,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:57:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:57:58,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:57:58,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045482334] [2021-10-28 09:57:58,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045482334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:58,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:58,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-28 09:57:58,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161661087] [2021-10-28 09:57:58,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:57:58,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:57:58,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:57:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:57:58,350 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:57:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:59,186 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2021-10-28 09:57:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:57:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-10-28 09:57:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:59,188 INFO L225 Difference]: With dead ends: 152 [2021-10-28 09:57:59,188 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:57:59,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:57:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:57:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2021-10-28 09:57:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 91 states have internal predecessors, (95), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:57:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2021-10-28 09:57:59,197 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 38 [2021-10-28 09:57:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2021-10-28 09:57:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:57:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2021-10-28 09:57:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:57:59,200 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:59,200 INFO L513 BasicCegarLoop]: trace histogram [6, 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, 1] [2021-10-28 09:57:59,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:59,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:57:59,413 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:57:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2002385956, now seen corresponding path program 1 times [2021-10-28 09:57:59,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:57:59,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012063732] [2021-10-28 09:57:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:59,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:57:59,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:57:59,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:57:59,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:57:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:59,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:57:59,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:59,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:00,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:00,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012063732] [2021-10-28 09:58:00,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012063732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:58:00,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:58:00,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-28 09:58:00,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551230960] [2021-10-28 09:58:00,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:58:00,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:58:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:58:00,318 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:58:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:01,042 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-10-28 09:58:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:58:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-10-28 09:58:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:01,051 INFO L225 Difference]: With dead ends: 138 [2021-10-28 09:58:01,051 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 09:58:01,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:58:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 09:58:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-28 09:58:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 80 states have (on average 1.2875) internal successors, (103), 99 states have internal predecessors, (103), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 140 transitions. [2021-10-28 09:58:01,057 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 140 transitions. Word has length 38 [2021-10-28 09:58:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:01,057 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 140 transitions. [2021-10-28 09:58:01,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:58:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 140 transitions. [2021-10-28 09:58:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:58:01,059 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:01,059 INFO L513 BasicCegarLoop]: trace histogram [14, 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, 1] [2021-10-28 09:58:01,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:01,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:01,272 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1528032860, now seen corresponding path program 2 times [2021-10-28 09:58:01,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:01,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057240043] [2021-10-28 09:58:01,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:58:01,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:01,274 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:01,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:58:01,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:58:01,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:58:01,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:58:01,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:01,568 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 [2021-10-28 09:58:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-28 09:58:02,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-28 09:58:03,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:03,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057240043] [2021-10-28 09:58:03,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057240043] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:03,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:03,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-28 09:58:03,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053006941] [2021-10-28 09:58:03,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:58:03,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:58:03,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:58:03,266 INFO L87 Difference]: Start difference. First operand 134 states and 140 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:58:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:05,263 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-10-28 09:58:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:05,264 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-10-28 09:58:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:05,265 INFO L225 Difference]: With dead ends: 133 [2021-10-28 09:58:05,265 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 09:58:05,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:58:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 09:58:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-28 09:58:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.275) internal successors, (102), 98 states have internal predecessors, (102), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2021-10-28 09:58:05,271 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 46 [2021-10-28 09:58:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:05,272 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2021-10-28 09:58:05,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:58:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2021-10-28 09:58:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:58:05,273 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:05,273 INFO L513 BasicCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:05,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:05,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:05,485 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1472640772, now seen corresponding path program 1 times [2021-10-28 09:58:05,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:05,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615323213] [2021-10-28 09:58:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:05,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:05,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:05,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:05,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:58:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:05,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:58:05,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:06,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:07,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:07,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615323213] [2021-10-28 09:58:07,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615323213] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:58:07,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:58:07,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-28 09:58:07,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613396576] [2021-10-28 09:58:07,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-28 09:58:07,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-28 09:58:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 09:58:07,177 INFO L87 Difference]: Start difference. First operand 133 states and 139 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:58:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:07,818 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2021-10-28 09:58:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:58:07,820 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-28 09:58:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:07,822 INFO L225 Difference]: With dead ends: 139 [2021-10-28 09:58:07,822 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 09:58:07,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:58:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 09:58:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-10-28 09:58:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 100 states have internal predecessors, (104), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2021-10-28 09:58:07,828 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 51 [2021-10-28 09:58:07,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:07,829 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2021-10-28 09:58:07,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:58:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2021-10-28 09:58:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:58:07,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:07,830 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:07,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:08,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:08,052 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash 680412260, now seen corresponding path program 2 times [2021-10-28 09:58:08,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:08,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562478452] [2021-10-28 09:58:08,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:58:08,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:08,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:08,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:58:08,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:58:08,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:58:08,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:58:08,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:08,430 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 [2021-10-28 09:58:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:08,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:09,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:09,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562478452] [2021-10-28 09:58:09,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562478452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:09,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:09,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-28 09:58:09,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898303347] [2021-10-28 09:58:09,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:09,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:09,024 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-28 09:58:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:09,742 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2021-10-28 09:58:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2021-10-28 09:58:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:09,744 INFO L225 Difference]: With dead ends: 159 [2021-10-28 09:58:09,744 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 09:58:09,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:58:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 09:58:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-10-28 09:58:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 98 states have internal predecessors, (102), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2021-10-28 09:58:09,752 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 53 [2021-10-28 09:58:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:09,752 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2021-10-28 09:58:09,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-28 09:58:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2021-10-28 09:58:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:58:09,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:09,754 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:09,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:09,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:09,966 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 680412261, now seen corresponding path program 1 times [2021-10-28 09:58:09,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:09,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866190567] [2021-10-28 09:58:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:09,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:09,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:09,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:09,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 09:58:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:10,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:58:10,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:10,410 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 [2021-10-28 09:58:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:10,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:12,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:12,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866190567] [2021-10-28 09:58:12,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866190567] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:12,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:12,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-28 09:58:12,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25956755] [2021-10-28 09:58:12,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:58:12,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:12,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:58:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:58:12,013 INFO L87 Difference]: Start difference. First operand 133 states and 139 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 09:58:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:14,026 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-10-28 09:58:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:14,027 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-10-28 09:58:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:14,029 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:58:14,029 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 09:58:14,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:58:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 09:58:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-28 09:58:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 96 states have internal predecessors, (100), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2021-10-28 09:58:14,035 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 53 [2021-10-28 09:58:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:14,035 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2021-10-28 09:58:14,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 09:58:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2021-10-28 09:58:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 09:58:14,037 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:14,037 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:14,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:14,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:14,250 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1848313328, now seen corresponding path program 1 times [2021-10-28 09:58:14,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:14,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170053987] [2021-10-28 09:58:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:14,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:14,254 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:14,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 09:58:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:58:14,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:14,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:15,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:15,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170053987] [2021-10-28 09:58:15,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170053987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:15,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:15,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-28 09:58:15,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766644191] [2021-10-28 09:58:15,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:15,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:15,067 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:15,110 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2021-10-28 09:58:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2021-10-28 09:58:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:15,113 INFO L225 Difference]: With dead ends: 133 [2021-10-28 09:58:15,113 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 09:58:15,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 09:58:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-28 09:58:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 95 states have internal predecessors, (99), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 136 transitions. [2021-10-28 09:58:15,118 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 136 transitions. Word has length 60 [2021-10-28 09:58:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:15,118 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 136 transitions. [2021-10-28 09:58:15,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 136 transitions. [2021-10-28 09:58:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 09:58:15,119 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:15,119 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:15,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:15,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:15,320 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:15,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1123996245, now seen corresponding path program 1 times [2021-10-28 09:58:15,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:15,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910387992] [2021-10-28 09:58:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:15,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:15,321 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:15,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 09:58:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:15,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:58:15,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:15,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:16,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:16,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910387992] [2021-10-28 09:58:16,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910387992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:16,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:16,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-28 09:58:16,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723912193] [2021-10-28 09:58:16,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:58:16,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:58:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:16,337 INFO L87 Difference]: Start difference. First operand 131 states and 136 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 09:58:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:16,412 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2021-10-28 09:58:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:16,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-10-28 09:58:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:16,416 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:58:16,417 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 09:58:16,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 09:58:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-28 09:58:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 94 states have internal predecessors, (98), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-10-28 09:58:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-10-28 09:58:16,422 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 65 [2021-10-28 09:58:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:16,422 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-10-28 09:58:16,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 09:58:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-10-28 09:58:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-28 09:58:16,424 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:16,424 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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] [2021-10-28 09:58:16,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:16,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:16,637 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:16,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -638447166, now seen corresponding path program 1 times [2021-10-28 09:58:16,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:16,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172700518] [2021-10-28 09:58:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:16,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:16,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:16,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 09:58:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:17,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 09:58:17,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:17,170 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 [2021-10-28 09:58:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:17,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:18,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:18,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172700518] [2021-10-28 09:58:18,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172700518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 17] imperfect sequences [] total 18 [2021-10-28 09:58:18,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944757332] [2021-10-28 09:58:18,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:58:18,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:58:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:58:18,234 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 19 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 7 states have call predecessors, (20), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-28 09:58:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:19,420 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2021-10-28 09:58:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:58:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 7 states have call predecessors, (20), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2021-10-28 09:58:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:19,422 INFO L225 Difference]: With dead ends: 183 [2021-10-28 09:58:19,422 INFO L226 Difference]: Without dead ends: 183 [2021-10-28 09:58:19,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 16 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:58:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-28 09:58:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 157. [2021-10-28 09:58:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 100 states have (on average 1.19) internal successors, (119), 113 states have internal predecessors, (119), 22 states have call successors, (22), 22 states have call predecessors, (22), 23 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2021-10-28 09:58:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2021-10-28 09:58:19,431 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 76 [2021-10-28 09:58:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:19,432 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2021-10-28 09:58:19,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 7 states have call predecessors, (20), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-28 09:58:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2021-10-28 09:58:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-28 09:58:19,433 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:19,433 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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] [2021-10-28 09:58:19,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-28 09:58:19,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:19,647 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_atomic_sub_returnErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash -638447165, now seen corresponding path program 1 times [2021-10-28 09:58:19,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:19,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552086449] [2021-10-28 09:58:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:19,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:19,649 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:19,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-28 09:58:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:20,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 09:58:20,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:20,325 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 [2021-10-28 09:58:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:21,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:23,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:23,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552086449] [2021-10-28 09:58:23,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552086449] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:23,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:23,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 18] imperfect sequences [] total 36 [2021-10-28 09:58:23,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775695601] [2021-10-28 09:58:23,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-28 09:58:23,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-28 09:58:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2021-10-28 09:58:23,534 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand has 37 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 23 states have internal predecessors, (72), 14 states have call successors, (25), 12 states have call predecessors, (25), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:58:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:27,239 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2021-10-28 09:58:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:58:27,240 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 23 states have internal predecessors, (72), 14 states have call successors, (25), 12 states have call predecessors, (25), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) Word has length 76 [2021-10-28 09:58:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:27,241 INFO L225 Difference]: With dead ends: 155 [2021-10-28 09:58:27,241 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:58:27,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2021-10-28 09:58:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:58:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-10-28 09:58:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.15) internal successors, (115), 111 states have internal predecessors, (115), 22 states have call successors, (22), 22 states have call predecessors, (22), 23 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2021-10-28 09:58:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2021-10-28 09:58:27,249 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 76 [2021-10-28 09:58:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:27,249 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2021-10-28 09:58:27,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 23 states have internal predecessors, (72), 14 states have call successors, (25), 12 states have call predecessors, (25), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:58:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2021-10-28 09:58:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-28 09:58:27,251 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:27,251 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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, 1, 1, 1] [2021-10-28 09:58:27,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:27,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:27,456 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1131008798, now seen corresponding path program 1 times [2021-10-28 09:58:27,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:27,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148413490] [2021-10-28 09:58:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:27,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:27,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:27,458 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:27,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-28 09:58:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:28,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:58:28,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:28,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:28,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:28,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148413490] [2021-10-28 09:58:28,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148413490] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:28,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:28,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 14 [2021-10-28 09:58:28,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381956136] [2021-10-28 09:58:28,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:58:28,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:58:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:28,858 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-28 09:58:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:28,978 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2021-10-28 09:58:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 83 [2021-10-28 09:58:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:28,987 INFO L225 Difference]: With dead ends: 159 [2021-10-28 09:58:28,987 INFO L226 Difference]: Without dead ends: 153 [2021-10-28 09:58:28,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:58:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-28 09:58:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-10-28 09:58:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 109 states have internal predecessors, (112), 22 states have call successors, (22), 22 states have call predecessors, (22), 22 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2021-10-28 09:58:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2021-10-28 09:58:28,993 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 83 [2021-10-28 09:58:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:28,994 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2021-10-28 09:58:28,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-28 09:58:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2021-10-28 09:58:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-28 09:58:28,995 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:28,996 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:29,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:29,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:29,220 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_cleanupErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:29,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1628283129, now seen corresponding path program 1 times [2021-10-28 09:58:29,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:29,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413975928] [2021-10-28 09:58:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:29,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:29,222 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:29,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-28 09:58:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:29,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 09:58:29,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:29,910 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 [2021-10-28 09:58:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:30,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:31,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:31,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413975928] [2021-10-28 09:58:31,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413975928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:31,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:31,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22, 21] imperfect sequences [] total 22 [2021-10-28 09:58:31,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523213268] [2021-10-28 09:58:31,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:58:31,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:58:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:58:31,261 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand has 23 states, 17 states have (on average 4.176470588235294) internal successors, (71), 14 states have internal predecessors, (71), 10 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:58:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:32,752 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2021-10-28 09:58:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 09:58:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 4.176470588235294) internal successors, (71), 14 states have internal predecessors, (71), 10 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 89 [2021-10-28 09:58:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:32,755 INFO L225 Difference]: With dead ends: 186 [2021-10-28 09:58:32,755 INFO L226 Difference]: Without dead ends: 186 [2021-10-28 09:58:32,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 138 SyntacticMatches, 18 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:58:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-28 09:58:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2021-10-28 09:58:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 112 states have internal predecessors, (116), 25 states have call successors, (25), 25 states have call predecessors, (25), 22 states have return successors, (28), 21 states have call predecessors, (28), 24 states have call successors, (28) [2021-10-28 09:58:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2021-10-28 09:58:32,764 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 89 [2021-10-28 09:58:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:32,764 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2021-10-28 09:58:32,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 4.176470588235294) internal successors, (71), 14 states have internal predecessors, (71), 10 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:58:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2021-10-28 09:58:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-28 09:58:32,766 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:32,766 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:32,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:32,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:32,984 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_cleanupErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1628283130, now seen corresponding path program 1 times [2021-10-28 09:58:32,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:32,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149257458] [2021-10-28 09:58:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:32,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:32,986 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:32,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-28 09:58:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:33,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-28 09:58:33,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:33,760 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 [2021-10-28 09:58:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:34,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:37,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:37,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149257458] [2021-10-28 09:58:37,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149257458] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:37,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:37,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 22] imperfect sequences [] total 44 [2021-10-28 09:58:37,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510154946] [2021-10-28 09:58:37,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-28 09:58:37,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:37,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-28 09:58:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1853, Unknown=0, NotChecked=0, Total=1980 [2021-10-28 09:58:37,862 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 45 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 27 states have internal predecessors, (90), 18 states have call successors, (31), 16 states have call predecessors, (31), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-28 09:58:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:42,711 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2021-10-28 09:58:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:58:42,712 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 27 states have internal predecessors, (90), 18 states have call successors, (31), 16 states have call predecessors, (31), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) Word has length 89 [2021-10-28 09:58:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:42,713 INFO L225 Difference]: With dead ends: 157 [2021-10-28 09:58:42,713 INFO L226 Difference]: Without dead ends: 157 [2021-10-28 09:58:42,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=189, Invalid=2673, Unknown=0, NotChecked=0, Total=2862 [2021-10-28 09:58:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-28 09:58:42,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-10-28 09:58:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 110 states have internal predecessors, (113), 25 states have call successors, (25), 25 states have call predecessors, (25), 22 states have return successors, (28), 21 states have call predecessors, (28), 24 states have call successors, (28) [2021-10-28 09:58:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2021-10-28 09:58:42,721 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 89 [2021-10-28 09:58:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:42,721 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2021-10-28 09:58:42,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 27 states have internal predecessors, (90), 18 states have call successors, (31), 16 states have call predecessors, (31), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-28 09:58:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2021-10-28 09:58:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-28 09:58:42,739 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:42,739 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:42,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:42,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:42,954 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash 822322196, now seen corresponding path program 1 times [2021-10-28 09:58:42,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:42,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981481929] [2021-10-28 09:58:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:42,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:42,957 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:42,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-28 09:58:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:43,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:58:43,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:45,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:58:46,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:46,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981481929] [2021-10-28 09:58:46,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981481929] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:46,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:46,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 21] imperfect sequences [] total 43 [2021-10-28 09:58:46,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169033655] [2021-10-28 09:58:46,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-28 09:58:46,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-28 09:58:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1726, Unknown=0, NotChecked=0, Total=1892 [2021-10-28 09:58:46,349 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand has 44 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 26 states have internal predecessors, (100), 19 states have call successors, (35), 17 states have call predecessors, (35), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-28 09:58:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:48,521 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2021-10-28 09:58:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:58:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 26 states have internal predecessors, (100), 19 states have call successors, (35), 17 states have call predecessors, (35), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) Word has length 92 [2021-10-28 09:58:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:48,525 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:58:48,525 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 09:58:48,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2021-10-28 09:58:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 09:58:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-10-28 09:58:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.087378640776699) internal successors, (112), 109 states have internal predecessors, (112), 25 states have call successors, (25), 25 states have call predecessors, (25), 22 states have return successors, (28), 21 states have call predecessors, (28), 24 states have call successors, (28) [2021-10-28 09:58:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2021-10-28 09:58:48,533 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 92 [2021-10-28 09:58:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:48,533 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2021-10-28 09:58:48,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 26 states have internal predecessors, (100), 19 states have call successors, (35), 17 states have call predecessors, (35), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-28 09:58:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2021-10-28 09:58:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-28 09:58:48,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:48,535 INFO L513 BasicCegarLoop]: trace histogram [16, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:48,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:48,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:48,752 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -692582595, now seen corresponding path program 1 times [2021-10-28 09:58:48,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:48,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742328856] [2021-10-28 09:58:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:48,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:48,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:48,754 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:48,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-28 09:58:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-28 09:58:49,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:49,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:58:49,809 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-28 09:58:49,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-28 09:58:49,900 INFO L354 Elim1Store]: treesize reduction 68, result has 20.9 percent of original size [2021-10-28 09:58:49,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-10-28 09:58:50,018 INFO L354 Elim1Store]: treesize reduction 126, result has 18.2 percent of original size [2021-10-28 09:58:50,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-10-28 09:58:50,192 INFO L354 Elim1Store]: treesize reduction 198, result has 16.1 percent of original size [2021-10-28 09:58:50,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-10-28 09:58:50,372 INFO L354 Elim1Store]: treesize reduction 246, result has 15.2 percent of original size [2021-10-28 09:58:50,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 80 [2021-10-28 09:58:50,594 INFO L354 Elim1Store]: treesize reduction 332, result has 13.8 percent of original size [2021-10-28 09:58:50,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 94 [2021-10-28 09:58:51,005 INFO L354 Elim1Store]: treesize reduction 444, result has 12.3 percent of original size [2021-10-28 09:58:51,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 109 [2021-10-28 09:58:51,414 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-10-28 09:58:51,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 102 treesize of output 122 [2021-10-28 09:58:51,896 INFO L354 Elim1Store]: treesize reduction 680, result has 10.5 percent of original size [2021-10-28 09:58:51,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 137 [2021-10-28 09:58:52,459 INFO L354 Elim1Store]: treesize reduction 828, result has 9.8 percent of original size [2021-10-28 09:58:52,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 126 treesize of output 152 [2021-10-28 09:58:53,143 INFO L354 Elim1Store]: treesize reduction 990, result has 9.2 percent of original size [2021-10-28 09:58:53,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 138 treesize of output 167 [2021-10-28 09:58:54,078 INFO L354 Elim1Store]: treesize reduction 1100, result has 8.9 percent of original size [2021-10-28 09:58:54,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 146 treesize of output 178 [2021-10-28 09:58:55,121 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-10-28 09:58:55,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 157 treesize of output 192 [2021-10-28 09:58:56,297 INFO L354 Elim1Store]: treesize reduction 1452, result has 7.9 percent of original size [2021-10-28 09:58:56,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 168 treesize of output 206 [2021-10-28 09:58:57,795 INFO L354 Elim1Store]: treesize reduction 1646, result has 7.5 percent of original size [2021-10-28 09:58:57,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 179 treesize of output 220 [2021-10-28 09:59:02,753 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |c_#memory_$Pointer$.offset|)) is different from true [2021-10-28 09:59:04,794 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base|) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv15 32)) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_#in~kobj.offset|) .cse0))))) is different from true [2021-10-28 09:59:04,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:04,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:59:04,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 185 treesize of output 195 [2021-10-28 09:59:09,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:09,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:59:10,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:59:10,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 120 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 133 treesize of output 121 [2021-10-28 09:59:12,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:59:12,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 92 treesize of output 40 [2021-10-28 09:59:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:12,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 10:01:30,252 WARN L207 SmtUtils]: Spent 2.19 m on a formula simplification that was a NOOP. DAG size: 152 [2021-10-28 10:01:43,392 WARN L207 SmtUtils]: Spent 11.25 s on a formula simplification that was a NOOP. DAG size: 106 [2021-10-28 10:01:50,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-28 10:03:24,834 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_17) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_18) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_19) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_20) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base (let ((.cse1 (bvadd (_ bv4 32) c_ldv_kobject_init_internal_~kobj.offset))) (store (store (select |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base) .cse1 .cse1) (bvadd (_ bv8 32) c_ldv_kobject_init_internal_~kobj.offset) .cse1))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|)))) is different from false [2021-10-28 10:03:25,086 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:03:25,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3830258 treesize of output 3821565 [2021-10-28 10:03:40,039 WARN L207 SmtUtils]: Spent 14.95 s on a formula simplification that was a NOOP. DAG size: 2072 [2021-10-28 10:09:55,892 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 10:09:55,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 10:09:55,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 10:09:55,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742328856] [2021-10-28 10:09:55,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 10:09:55,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [898586001] [2021-10-28 10:09:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 10:09:55,895 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 10:09:55,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 10:09:55,895 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 10:09:55,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-28 10:09:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:09:57,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-28 10:09:57,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:09:57,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 10:09:57,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365519419] [2021-10-28 10:09:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 10:09:57,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 10:09:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:09:57,985 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 10:09:57,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 10:09:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:09:59,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-28 10:09:59,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:09:59,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 10:09:59,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 10:09:59,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 10:09:59,113 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 10:09:59,114 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 10:09:59,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-28 10:09:59,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-28 10:09:59,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-28 10:09:59,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-28 10:09:59,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 10:09:59,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 10:09:59,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-28 10:09:59,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-28 10:09:59,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 10:09:59,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-28 10:09:59,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-28 10:09:59,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f431fc-ca27-4245-b4fb-8bcd8b978975/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 10:09:59,734 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 10:09:59,738 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 10:09:59,742 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-28 10:09:59,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:09:59 BoogieIcfgContainer [2021-10-28 10:09:59,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 10:09:59,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 10:09:59,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 10:09:59,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 10:09:59,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:49" (3/4) ... [2021-10-28 10:09:59,761 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 10:09:59,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 10:09:59,762 INFO L168 Benchmark]: Toolchain (without parser) took 732305.57 ms. Allocated memory was 73.4 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 52.7 MB in the beginning and 755.8 MB in the end (delta: -703.1 MB). Peak memory consumption was 578.3 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:59,762 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 73.4 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:09:59,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.44 ms. Allocated memory is still 73.4 MB. Free memory was 52.5 MB in the beginning and 37.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:59,763 INFO L168 Benchmark]: Boogie Preprocessor took 92.86 ms. Allocated memory is still 73.4 MB. Free memory was 37.7 MB in the beginning and 32.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:59,763 INFO L168 Benchmark]: RCFGBuilder took 1529.35 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 32.9 MB in the beginning and 52.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:59,764 INFO L168 Benchmark]: TraceAbstraction took 729874.01 ms. Allocated memory was 92.3 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 51.5 MB in the beginning and 755.8 MB in the end (delta: -704.3 MB). Peak memory consumption was 557.0 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:59,764 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 1.4 GB. Free memory is still 755.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:09:59,770 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 73.4 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 783.44 ms. Allocated memory is still 73.4 MB. Free memory was 52.5 MB in the beginning and 37.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.86 ms. Allocated memory is still 73.4 MB. Free memory was 37.7 MB in the beginning and 32.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1529.35 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 32.9 MB in the beginning and 52.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 729874.01 ms. Allocated memory was 92.3 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 51.5 MB in the beginning and 755.8 MB in the end (delta: -704.3 MB). Peak memory consumption was 557.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.41 ms. Allocated memory is still 1.4 GB. Free memory is still 755.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free 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) }; [L770] CALL entry_point() [L764] struct ldv_kobject *kobj; [L765] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) [L540] list->next = list [L541] list->prev = list [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; [L765] RET, EXPR ldv_kobject_create() [L765] kobj = ldv_kobject_create() [L766] CALL f_22_put(kobj) [L761] CALL ldv_kobject_put(kobj) [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL ldv_kref_sub(kref, 1, release) [L674] CALL, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; [L666] EXPR v->counter [L666] temp = v->counter [L667] temp -= i [L668] v->counter = temp [L669] return temp; [L674] RET, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L674] COND TRUE (ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0) [L675] CALL release(kref) [L706] const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); [L706] struct ldv_kobject *kobj = ({ const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );}); [L707] CALL ldv_kobject_cleanup(kobj) [L699] EXPR kobj->name [L699] char *name = kobj->name; [L700] free(kobj) [L700] free(kobj) [L700] free(kobj) [L701] COND TRUE \read(*name) [L702] free(name) - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 49 procedures, 341 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 729.7s, OverallIterations: 23, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2409 SDtfs, 1258 SDslu, 19332 SDs, 0 SdLazy, 10820 SolverSat, 352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2299 GetRequests, 1821 SyntacticMatches, 73 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=20, InterpolantAutomatonStates: 281, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 134 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 689.5s InterpolantComputationTime, 1219 NumberOfCodeBlocks, 1183 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2298 ConstructedInterpolants, 310 QuantifiedInterpolants, 14432 SizeOfPredicates, 143 NumberOfNonLiveVariables, 5250 ConjunctsInSsa, 472 ConjunctsInUnsatCore, 45 InterpolantComputations, 38 PerfectInterpolantSequences, 2984/3378 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...