./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3 --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 74d770113cb1f1dff37024c2e31ce0944e8f2983 .......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:22:02,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:22:02,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:22:02,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:22:02,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:22:02,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:22:02,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:22:02,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:22:02,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:22:02,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:22:02,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:22:02,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:22:02,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:22:02,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:22:02,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:22:02,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:22:02,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:22:02,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:22:02,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:22:02,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:22:02,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:22:02,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:22:02,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:22:02,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:22:02,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:22:02,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:22:02,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:22:02,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:22:02,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:22:02,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:22:02,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:22:03,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:22:03,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:22:03,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:22:03,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:22:03,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:22:03,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:22:03,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:22:03,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:22:03,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:22:03,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:22:03,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-15 20:22:03,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:22:03,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:22:03,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:22:03,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:22:03,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:22:03,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:22:03,050 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:22:03,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:22:03,051 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:22:03,051 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:22:03,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:22:03,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:22:03,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:22:03,052 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 20:22:03,052 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 20:22:03,053 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-15 20:22:03,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:22:03,053 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 20:22:03,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:22:03,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:22:03,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:22:03,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:22:03,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:22:03,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:22:03,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:22:03,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:22:03,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:22:03,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:22:03,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:22:03,057 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_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74d770113cb1f1dff37024c2e31ce0944e8f2983 [2021-10-15 20:22:03,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:22:03,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:22:03,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:22:03,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:22:03,481 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:22:03,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2021-10-15 20:22:03,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/data/fa8f3d0fd/69e2e588f42d4c25a7a580b26b57a6c2/FLAG94cbd617b [2021-10-15 20:22:04,142 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:22:04,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2021-10-15 20:22:04,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/data/fa8f3d0fd/69e2e588f42d4c25a7a580b26b57a6c2/FLAG94cbd617b [2021-10-15 20:22:04,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/data/fa8f3d0fd/69e2e588f42d4c25a7a580b26b57a6c2 [2021-10-15 20:22:04,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:22:04,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 20:22:04,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:22:04,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:22:04,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:22:04,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c77f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04, skipping insertion in model container [2021-10-15 20:22:04,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:22:04,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:22:04,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:22:04,765 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:22:04,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:22:04,800 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:22:04,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04 WrapperNode [2021-10-15 20:22:04,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:22:04,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:22:04,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:22:04,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:22:04,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:22:04,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:22:04,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:22:04,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:22:04,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (1/1) ... [2021-10-15 20:22:04,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:22:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:22:04,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:22:04,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:22:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-15 20:22:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:22:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2021-10-15 20:22:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-15 20:22:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-15 20:22:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2021-10-15 20:22:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:22:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:22:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-15 20:22:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-15 20:22:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:22:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:22:05,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:22:05,277 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-15 20:22:05,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:05 BoogieIcfgContainer [2021-10-15 20:22:05,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:22:05,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:22:05,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:22:05,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:22:05,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:22:04" (1/3) ... [2021-10-15 20:22:05,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28939c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:22:05, skipping insertion in model container [2021-10-15 20:22:05,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:04" (2/3) ... [2021-10-15 20:22:05,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28939c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:22:05, skipping insertion in model container [2021-10-15 20:22:05,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:05" (3/3) ... [2021-10-15 20:22:05,311 INFO L111 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2021-10-15 20:22:05,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:22:05,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-15 20:22:05,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:22:05,412 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:22:05,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-15 20:22:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 20:22:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-15 20:22:05,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:22:05,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:22:05,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting SelectionSortErr4REQUIRES_VIOLATION === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION (and 9 more)] === [2021-10-15 20:22:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:22:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2021-10-15 20:22:05,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:22:05,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23777724] [2021-10-15 20:22:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:22:05,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:22:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:22:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 20:22:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:22:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:22:05,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:22:05,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23777724] [2021-10-15 20:22:05,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23777724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:22:05,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:22:05,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:22:05,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228724390] [2021-10-15 20:22:05,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:22:05,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:22:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:22:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:22:05,710 INFO L87 Difference]: Start difference. First operand has 41 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 20:22:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:22:05,915 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-10-15 20:22:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:22:05,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-15 20:22:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:22:05,928 INFO L225 Difference]: With dead ends: 41 [2021-10-15 20:22:05,928 INFO L226 Difference]: Without dead ends: 34 [2021-10-15 20:22:05,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:22:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-15 20:22:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-15 20:22:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 20:22:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-10-15 20:22:05,985 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2021-10-15 20:22:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:22:05,987 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-10-15 20:22:05,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 20:22:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-10-15 20:22:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-15 20:22:05,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:22:05,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:22:05,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:22:05,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting SelectionSortErr0REQUIRES_VIOLATION === [SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION (and 9 more)] === [2021-10-15 20:22:05,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:22:05,993 INFO L82 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2021-10-15 20:22:05,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:22:05,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409837305] [2021-10-15 20:22:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:22:05,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:22:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:22:06,041 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:22:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:22:06,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:22:06,126 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:22:06,131 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location SelectionSortErr0REQUIRES_VIOLATION [2021-10-15 20:22:06,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr1REQUIRES_VIOLATION [2021-10-15 20:22:06,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr2REQUIRES_VIOLATION [2021-10-15 20:22:06,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr3REQUIRES_VIOLATION [2021-10-15 20:22:06,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr4REQUIRES_VIOLATION [2021-10-15 20:22:06,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr5REQUIRES_VIOLATION [2021-10-15 20:22:06,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr6REQUIRES_VIOLATION [2021-10-15 20:22:06,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr7REQUIRES_VIOLATION [2021-10-15 20:22:06,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr8REQUIRES_VIOLATION [2021-10-15 20:22:06,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr9REQUIRES_VIOLATION [2021-10-15 20:22:06,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr10REQUIRES_VIOLATION [2021-10-15 20:22:06,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location SelectionSortErr11REQUIRES_VIOLATION [2021-10-15 20:22:06,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-15 20:22:06,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:22:06,147 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:22:06,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:22:06 BoogieIcfgContainer [2021-10-15 20:22:06,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:22:06,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:22:06,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:22:06,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:22:06,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:05" (3/4) ... [2021-10-15 20:22:06,181 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:22:06,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:22:06,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:22:06,256 INFO L168 Benchmark]: Toolchain (without parser) took 1764.34 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 63.9 MB in the beginning and 89.9 MB in the end (delta: -26.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:22:06,257 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 94.4 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:22:06,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.42 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 63.6 MB in the beginning and 94.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:06,258 INFO L168 Benchmark]: Boogie Preprocessor took 41.19 ms. Allocated memory is still 117.4 MB. Free memory was 94.7 MB in the beginning and 93.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:06,259 INFO L168 Benchmark]: RCFGBuilder took 435.70 ms. Allocated memory is still 117.4 MB. Free memory was 93.0 MB in the beginning and 82.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:06,260 INFO L168 Benchmark]: TraceAbstraction took 887.89 ms. Allocated memory is still 117.4 MB. Free memory was 82.1 MB in the beginning and 91.5 MB in the end (delta: -9.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:22:06,260 INFO L168 Benchmark]: Witness Printer took 77.00 ms. Allocated memory is still 117.4 MB. Free memory was 91.5 MB in the beginning and 89.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:22:06,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 94.4 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.42 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 63.6 MB in the beginning and 94.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.19 ms. Allocated memory is still 117.4 MB. Free memory was 94.7 MB in the beginning and 93.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 435.70 ms. Allocated memory is still 117.4 MB. Free memory was 93.0 MB in the beginning and 82.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 887.89 ms. Allocated memory is still 117.4 MB. Free memory was 82.1 MB in the beginning and 91.5 MB in the end (delta: -9.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 77.00 ms. Allocated memory is still 117.4 MB. Free memory was 91.5 MB in the beginning and 89.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L23] int *a; [L24] int array_size = __VERIFIER_nondet_int(); [L25] CALL SelectionSort(a, array_size) VAL [\old(array_size)=2, a={4:5}] [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={4:5}, a={4:5}, array_size=2, i=0] [L6] COND TRUE i < array_size - 1 [L8] int j, min, temp; [L9] min = i [L10] j = i+1 VAL [\old(array_size)=2, a={4:5}, a={4:5}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:5}, a={4:5}, array_size=2, i=0, j=1, min=0] [L12] a[j] - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: 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 4 procedures, 41 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 742.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.9ms, AutomataDifference: 241.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 42 SDslu, 10 SDs, 0 SdLazy, 45 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.0ms SsaConstructionTime, 61.5ms SatisfiabilityAnalysisTime, 106.5ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2021-10-15 20:22:06,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486bf205-14a5-4bef-a780-10194ca1ebc5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...