./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.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_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/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_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/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_4788797a-6aa0-4757-91e7-da5497645a4c/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 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/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_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/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_4788797a-6aa0-4757-91e7-da5497645a4c/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 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:42:21,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:42:21,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:42:21,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:42:21,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:42:21,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:42:21,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:42:21,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:42:21,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:42:21,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:42:21,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:42:21,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:42:21,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:42:21,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:42:21,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:42:21,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:42:21,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:42:21,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:42:21,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:42:21,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:42:21,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:42:21,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:42:21,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:42:21,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:42:21,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:42:21,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:42:21,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:42:21,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:42:21,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:42:21,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:42:21,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:42:21,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:42:21,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:42:21,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:42:21,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:42:21,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:42:21,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:42:21,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:42:21,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:42:21,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:42:21,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:42:21,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:42:21,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:42:21,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:42:21,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:42:21,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:42:21,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:42:21,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:42:21,975 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:42:21,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:42:21,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:42:21,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:42:21,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:42:21,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:42:21,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:42:21,977 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:42:21,977 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:42:21,978 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:42:21,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:42:21,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:42:21,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:42:21,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:42:21,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:42:21,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:42:21,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:42:21,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:42:21,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:42:21,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:42:21,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:42:21,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:42:21,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:42:21,982 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_4788797a-6aa0-4757-91e7-da5497645a4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-10-28 09:42:22,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:42:22,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:42:22,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:42:22,287 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:42:22,288 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:42:22,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 09:42:22,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/aace3dba7/dbd8b40e835a4e5db25358302d097a21/FLAGce6e0c624 [2021-10-28 09:42:22,964 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:42:22,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 09:42:22,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/aace3dba7/dbd8b40e835a4e5db25358302d097a21/FLAGce6e0c624 [2021-10-28 09:42:23,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/aace3dba7/dbd8b40e835a4e5db25358302d097a21 [2021-10-28 09:42:23,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:42:23,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:42:23,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:23,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:42:23,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:42:23,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382d1e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23, skipping insertion in model container [2021-10-28 09:42:23,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:42:23,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:42:23,652 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 09:42:23,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:23,663 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:42:23,702 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 09:42:23,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:23,732 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:42:23,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23 WrapperNode [2021-10-28 09:42:23,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:23,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:42:23,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:42:23,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:42:23,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:42:23,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:42:23,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:42:23,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:42:23,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (1/1) ... [2021-10-28 09:42:23,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:42:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:23,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:23,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:42:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:42:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:42:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:42:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:42:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:42:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:42:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:42:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:42:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 09:42:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:42:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:42:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:42:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:42:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:42:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:42:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:42:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:42:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:42:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:42:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:42:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:42:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:42:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:42:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:42:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:42:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:42:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:42:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:42:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:42:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:42:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:42:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:42:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:42:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:42:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:42:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:42:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:42:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:42:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:42:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:42:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:42:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:42:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:42:23,916 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:42:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:42:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:42:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:42:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:42:23,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:42:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:42:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:42:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:42:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:42:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:42:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:42:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:42:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:42:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:42:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:42:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:42:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:42:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:42:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:42:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:42:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:42:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:42:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:42:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:42:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:42:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:42:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:42:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:42:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:42:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:42:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:42:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:42:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:42:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:42:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:42:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:42:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:42:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:42:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:42:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:42:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:42:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:42:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:42:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:42:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:42:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:42:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:42:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:42:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:42:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:42:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:42:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:42:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:42:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:42:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:42:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:42:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 09:42:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:42:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:42:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:42:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:42:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:42:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:42:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:42:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:42:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:42:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:42:24,224 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 09:42:24,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:42:24,510 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 09:42:24,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:24 BoogieIcfgContainer [2021-10-28 09:42:24,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:42:24,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:42:24,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:42:24,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:42:24,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:42:23" (1/3) ... [2021-10-28 09:42:24,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2194ad89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:42:24, skipping insertion in model container [2021-10-28 09:42:24,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:23" (2/3) ... [2021-10-28 09:42:24,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2194ad89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:42:24, skipping insertion in model container [2021-10-28 09:42:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:24" (3/3) ... [2021-10-28 09:42:24,524 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-28 09:42:24,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:42:24,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-28 09:42:24,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:42:24,607 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 09:42:24,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-28 09:42:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:42:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:42:24,635 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:24,636 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:24,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-10-28 09:42:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:24,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376925776] [2021-10-28 09:42:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:24,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:42:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:24,909 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 09:42:24,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:24,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376925776] [2021-10-28 09:42:24,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376925776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:24,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:24,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:42:24,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883034428] [2021-10-28 09:42:24,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:42:24,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:42:24,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:42:24,963 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:25,106 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-28 09:42:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:42:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:42:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:25,115 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:42:25,115 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 09:42:25,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 09:42:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 09:42:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-28 09:42:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-28 09:42:25,165 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-10-28 09:42:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:25,165 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-28 09:42:25,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-28 09:42:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:42:25,168 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:25,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:25,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:42:25,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:25,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-10-28 09:42:25,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:25,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721350688] [2021-10-28 09:42:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:25,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:42:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:25,368 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 09:42:25,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:25,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721350688] [2021-10-28 09:42:25,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721350688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:25,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:25,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:42:25,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905037531] [2021-10-28 09:42:25,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:42:25,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:42:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:25,380 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:25,569 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-28 09:42:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:42:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:42:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:25,575 INFO L225 Difference]: With dead ends: 63 [2021-10-28 09:42:25,575 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 09:42:25,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 09:42:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-10-28 09:42:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-28 09:42:25,596 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-10-28 09:42:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:25,597 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-28 09:42:25,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-28 09:42:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:42:25,598 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:25,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:25,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:42:25,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-10-28 09:42:25,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:25,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542115291] [2021-10-28 09:42:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:25,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:42:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:25,762 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 09:42:25,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:25,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542115291] [2021-10-28 09:42:25,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542115291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:25,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:25,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:42:25,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378757662] [2021-10-28 09:42:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:42:25,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:42:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:25,766 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:25,950 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-28 09:42:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:42:25,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:42:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:25,967 INFO L225 Difference]: With dead ends: 76 [2021-10-28 09:42:25,967 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 09:42:25,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 09:42:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-10-28 09:42:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-28 09:42:25,986 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-10-28 09:42:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:25,986 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-28 09:42:25,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-28 09:42:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:42:25,988 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:25,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:25,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:42:25,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-10-28 09:42:25,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:25,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656925966] [2021-10-28 09:42:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:25,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:42:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:26,155 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 09:42:26,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:26,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656925966] [2021-10-28 09:42:26,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656925966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:26,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:26,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:42:26,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422228195] [2021-10-28 09:42:26,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:42:26,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:42:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:42:26,158 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:26,378 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-28 09:42:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:42:26,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 09:42:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:26,386 INFO L225 Difference]: With dead ends: 110 [2021-10-28 09:42:26,386 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:42:26,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:42:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:42:26,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-28 09:42:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-10-28 09:42:26,408 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-10-28 09:42:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:26,409 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-10-28 09:42:26,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-10-28 09:42:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:42:26,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:26,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:26,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:42:26,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-10-28 09:42:26,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:26,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815308753] [2021-10-28 09:42:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:26,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:26,452 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:26,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:42:26,492 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:42:26,494 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:42:26,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:42:26,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:42:26,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:42:26,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:42:26,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:42:26,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:42:26,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:42:26,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:42:26,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:42:26,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:42:26,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:42:26,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:42:26,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:42:26,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:42:26,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:42:26,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:42:26,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:42:26,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:42:26,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:42:26,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:42:26,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:42:26,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:42:26,504 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-28 09:42:26,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:42:26,515 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:42:26,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:42:26 BoogieIcfgContainer [2021-10-28 09:42:26,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:42:26,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:42:26,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:42:26,529 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:42:26,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:24" (3/4) ... [2021-10-28 09:42:26,533 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:42:26,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:42:26,535 INFO L168 Benchmark]: Toolchain (without parser) took 3273.58 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 77.1 MB in the beginning and 63.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:26,536 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory is still 73.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:42:26,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.05 ms. Allocated memory is still 98.6 MB. Free memory was 77.1 MB in the beginning and 65.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:26,539 INFO L168 Benchmark]: Boogie Preprocessor took 67.07 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 62.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:26,540 INFO L168 Benchmark]: RCFGBuilder took 710.28 ms. Allocated memory is still 98.6 MB. Free memory was 62.8 MB in the beginning and 41.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:26,541 INFO L168 Benchmark]: TraceAbstraction took 2013.65 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 40.8 MB in the beginning and 64.3 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:42:26,542 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 119.5 MB. Free memory was 64.3 MB in the beginning and 63.4 MB in the end (delta: 901.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:26,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory is still 73.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.05 ms. Allocated memory is still 98.6 MB. Free memory was 77.1 MB in the beginning and 65.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.07 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 62.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 710.28 ms. Allocated memory is still 98.6 MB. Free memory was 62.8 MB in the beginning and 41.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2013.65 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 40.8 MB in the beginning and 64.3 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 119.5 MB. Free memory was 64.3 MB in the beginning and 63.4 MB in the end (delta: 901.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: 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: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: 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: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: 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: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:42:26,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:42:29,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:42:29,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:42:29,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:42:29,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:42:29,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:42:29,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:42:29,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:42:29,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:42:29,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:42:29,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:42:29,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:42:29,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:42:29,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:42:29,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:42:29,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:42:29,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:42:29,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:42:29,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:42:29,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:42:29,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:42:29,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:42:29,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:42:29,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:42:29,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:42:29,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:42:29,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:42:29,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:42:29,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:42:29,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:42:29,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:42:29,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:42:29,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:42:29,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:42:29,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:42:29,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:42:29,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:42:29,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:42:29,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:42:29,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:42:29,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:42:29,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:42:29,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:42:29,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:42:29,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:42:29,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:42:29,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:42:29,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:42:29,789 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:42:29,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:42:29,789 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:42:29,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:42:29,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:42:29,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:42:29,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:42:29,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:42:29,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:42:29,793 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:42:29,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:42:29,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:42:29,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:42:29,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:42:29,794 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:42:29,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:42:29,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:42:29,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:42:29,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:42:29,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:42:29,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:42:29,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:42:29,796 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:42:29,797 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:42:29,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:42:29,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:42:29,797 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_4788797a-6aa0-4757-91e7-da5497645a4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-10-28 09:42:30,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:42:30,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:42:30,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:42:30,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:42:30,268 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:42:30,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 09:42:30,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/eeb39361d/0c53b072ae2e491b81793c236eb094b7/FLAG856e3eec2 [2021-10-28 09:42:30,994 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:42:30,994 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-28 09:42:31,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/eeb39361d/0c53b072ae2e491b81793c236eb094b7/FLAG856e3eec2 [2021-10-28 09:42:31,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/data/eeb39361d/0c53b072ae2e491b81793c236eb094b7 [2021-10-28 09:42:31,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:42:31,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:42:31,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:31,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:42:31,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:42:31,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:31,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38bf08e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31, skipping insertion in model container [2021-10-28 09:42:31,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:31,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:42:31,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:42:31,790 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 09:42:31,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:31,819 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:42:31,890 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-28 09:42:31,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:31,939 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:42:31,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31 WrapperNode [2021-10-28 09:42:31,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:31,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:42:31,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:42:31,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:42:31,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:31,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:31,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:32,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:32,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:32,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:32,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:32,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:42:32,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:42:32,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:42:32,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:42:32,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (1/1) ... [2021-10-28 09:42:32,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:42:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:32,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:32,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:42:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:42:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:42:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:42:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:42:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:42:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:42:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:42:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:42:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:42:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 09:42:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:42:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:42:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:42:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:42:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:42:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:42:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:42:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:42:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:42:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:42:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:42:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:42:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:42:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:42:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:42:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:42:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:42:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:42:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:42:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:42:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:42:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:42:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:42:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:42:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:42:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:42:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:42:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:42:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:42:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:42:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:42:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:42:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:42:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:42:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:42:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:42:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:42:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:42:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:42:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:42:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:42:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:42:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:42:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:42:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:42:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:42:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:42:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:42:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:42:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:42:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:42:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:42:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:42:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:42:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:42:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:42:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:42:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:42:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:42:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:42:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:42:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:42:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:42:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:42:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:42:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:42:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:42:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:42:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:42:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:42:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:42:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:42:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:42:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:42:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:42:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:42:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:42:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:42:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:42:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:42:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:42:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:42:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:42:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:42:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:42:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:42:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:42:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:42:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:42:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:42:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:42:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:42:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:42:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:42:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:42:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:42:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:42:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:42:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:42:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:42:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:42:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:42:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:42:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:42:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:42:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 09:42:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:42:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:42:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:42:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:42:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:42:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:42:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:42:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:42:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:42:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:42:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:42:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:42:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:42:32,627 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 09:42:33,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:42:33,018 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 09:42:33,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:33 BoogieIcfgContainer [2021-10-28 09:42:33,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:42:33,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:42:33,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:42:33,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:42:33,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:42:31" (1/3) ... [2021-10-28 09:42:33,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2896109d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:42:33, skipping insertion in model container [2021-10-28 09:42:33,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:31" (2/3) ... [2021-10-28 09:42:33,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2896109d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:42:33, skipping insertion in model container [2021-10-28 09:42:33,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:33" (3/3) ... [2021-10-28 09:42:33,030 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-28 09:42:33,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:42:33,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-28 09:42:33,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:42:33,107 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 09:42:33,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-28 09:42:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:42:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:42:33,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:33,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:33,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1040661460, now seen corresponding path program 1 times [2021-10-28 09:42:33,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:42:33,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787578554] [2021-10-28 09:42:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:33,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:42:33,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:42:33,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:42:33,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:42:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:33,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:42:33,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:33,440 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 09:42:33,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:42:33,521 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 09:42:33,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:42:33,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787578554] [2021-10-28 09:42:33,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787578554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:33,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:33,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:42:33,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068836249] [2021-10-28 09:42:33,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:42:33,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:42:33,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:42:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:42:33,566 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:33,593 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-28 09:42:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:42:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:42:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:33,602 INFO L225 Difference]: With dead ends: 61 [2021-10-28 09:42:33,602 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 09:42:33,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:42:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 09:42:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-28 09:42:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-28 09:42:33,644 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-10-28 09:42:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:33,645 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-28 09:42:33,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-28 09:42:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:42:33,646 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:33,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:33,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:33,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:42:33,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1040662421, now seen corresponding path program 1 times [2021-10-28 09:42:33,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:42:33,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707926861] [2021-10-28 09:42:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:33,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:42:33,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:42:33,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:42:33,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:42:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:34,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:42:34,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:34,076 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 09:42:34,154 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 09:42:34,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:42:34,256 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 09:42:34,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:42:34,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707926861] [2021-10-28 09:42:34,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707926861] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:34,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:34,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:42:34,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817789638] [2021-10-28 09:42:34,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:42:34,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:42:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:42:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:42:34,265 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:34,541 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-28 09:42:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:34,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:42:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:34,545 INFO L225 Difference]: With dead ends: 61 [2021-10-28 09:42:34,546 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:42:34,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:42:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-10-28 09:42:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 52 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-10-28 09:42:34,569 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2021-10-28 09:42:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:34,575 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-28 09:42:34,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-10-28 09:42:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:42:34,577 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:34,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:34,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:34,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:42:34,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1040662420, now seen corresponding path program 1 times [2021-10-28 09:42:34,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:42:34,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016929697] [2021-10-28 09:42:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:34,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:42:34,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:42:34,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:42:34,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:42:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:34,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:42:34,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:34,984 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 09:42:35,095 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 09:42:35,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:42:35,286 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 09:42:35,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:42:35,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016929697] [2021-10-28 09:42:35,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016929697] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:35,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:35,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:42:35,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327601938] [2021-10-28 09:42:35,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:42:35,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:42:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:42:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:42:35,295 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:35,733 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-10-28 09:42:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:42:35,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:42:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:35,736 INFO L225 Difference]: With dead ends: 73 [2021-10-28 09:42:35,736 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 09:42:35,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:42:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 09:42:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2021-10-28 09:42:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 59 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-28 09:42:35,752 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2021-10-28 09:42:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:35,752 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-28 09:42:35,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:42:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-28 09:42:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:42:35,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:35,754 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 09:42:35,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-28 09:42:35,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:42:35,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 09:42:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1562517626, now seen corresponding path program 1 times [2021-10-28 09:42:35,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:42:35,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594358229] [2021-10-28 09:42:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:35,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:42:35,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:42:35,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:42:36,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:42:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:36,142 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:36,250 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:42:36,250 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:42:36,251 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:42:36,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:42:36,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:42:36,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:42:36,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:42:36,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:42:36,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:42:36,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:42:36,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:42:36,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:42:36,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:42:36,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:42:36,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:42:36,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:42:36,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:42:36,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:42:36,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:42:36,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:42:36,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:42:36,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:42:36,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:42:36,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:42:36,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:36,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:42:36,461 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 09:42:36,463 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:42:36,471 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:42:36,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:42:36 BoogieIcfgContainer [2021-10-28 09:42:36,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:42:36,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:42:36,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:42:36,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:42:36,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:33" (3/4) ... [2021-10-28 09:42:36,488 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:42:36,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:42:36,490 INFO L168 Benchmark]: Toolchain (without parser) took 5173.96 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 43.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:36,491 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:42:36,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.75 ms. Allocated memory is still 77.6 MB. Free memory was 62.2 MB in the beginning and 45.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:36,496 INFO L168 Benchmark]: Boogie Preprocessor took 147.69 ms. Allocated memory is still 77.6 MB. Free memory was 45.4 MB in the beginning and 42.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:36,497 INFO L168 Benchmark]: RCFGBuilder took 930.17 ms. Allocated memory is still 77.6 MB. Free memory was 42.3 MB in the beginning and 43.3 MB in the end (delta: -933.7 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:36,498 INFO L168 Benchmark]: TraceAbstraction took 3461.65 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 42.9 MB in the beginning and 43.7 MB in the end (delta: -783.7 kB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:42:36,498 INFO L168 Benchmark]: Witness Printer took 3.44 ms. Allocated memory is still 109.1 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:42:36,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 605.75 ms. Allocated memory is still 77.6 MB. Free memory was 62.2 MB in the beginning and 45.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 147.69 ms. Allocated memory is still 77.6 MB. Free memory was 45.4 MB in the beginning and 42.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 930.17 ms. Allocated memory is still 77.6 MB. Free memory was 42.3 MB in the beginning and 43.3 MB in the end (delta: -933.7 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3461.65 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 42.9 MB in the beginning and 43.7 MB in the end (delta: -783.7 kB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.44 ms. Allocated memory is still 109.1 MB. Free memory is still 43.7 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 ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648] [L536] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: 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: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: 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: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: 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: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 86 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 222 SDslu, 37 SDs, 0 SdLazy, 103 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:42:36,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4788797a-6aa0-4757-91e7-da5497645a4c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...