./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --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_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD --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 c2374f3fa60393b4239ba01cfdc738061c6be504efc61284895c5c63f0df9bcb ................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 23:53:41,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:53:41,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:53:41,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:53:41,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:53:41,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:53:41,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:53:41,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:53:41,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:53:41,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:53:41,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:53:41,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:53:41,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:53:41,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:53:41,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:53:41,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:53:41,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:53:41,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:53:41,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:53:41,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:53:41,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:53:41,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:53:41,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:53:41,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:53:41,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:53:41,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:53:41,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:53:41,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:53:41,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:53:41,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:53:41,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:53:41,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:53:41,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:53:41,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:53:41,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:53:41,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:53:41,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:53:41,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:53:41,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:53:41,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:53:41,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:53:41,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:53:41,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:53:41,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:53:41,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:53:41,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:53:41,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:53:41,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:53:41,867 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:53:41,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:53:41,868 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:53:41,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:53:41,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:53:41,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:53:41,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:53:41,870 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:53:41,871 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:53:41,871 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:53:41,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:53:41,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:53:41,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:53:41,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:53:41,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:53:41,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:53:41,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:53:41,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:53:41,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:53:41,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:53:41,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:53:41,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:53:41,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:53:41,877 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_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2374f3fa60393b4239ba01cfdc738061c6be504efc61284895c5c63f0df9bcb [2021-10-28 23:53:42,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:53:42,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:53:42,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:53:42,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:53:42,344 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:53:42,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-10-28 23:53:42,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/data/0478cae39/5301708cbf7e46a7a14e8154644f44fd/FLAG37a5ecd20 [2021-10-28 23:53:42,982 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:53:42,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-10-28 23:53:42,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/data/0478cae39/5301708cbf7e46a7a14e8154644f44fd/FLAG37a5ecd20 [2021-10-28 23:53:43,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/data/0478cae39/5301708cbf7e46a7a14e8154644f44fd [2021-10-28 23:53:43,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:53:43,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:53:43,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:53:43,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:53:43,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:53:43,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3a8b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43, skipping insertion in model container [2021-10-28 23:53:43,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:53:43,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:53:43,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:53:43,609 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:53:43,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:53:43,645 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:53:43,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43 WrapperNode [2021-10-28 23:53:43,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:53:43,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:53:43,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:53:43,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:53:43,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:53:43,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:53:43,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:53:43,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:53:43,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (1/1) ... [2021-10-28 23:53:43,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:53:43,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:53:43,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:53:43,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:53:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:53:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:53:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2021-10-28 23:53:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:53:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:53:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2021-10-28 23:53:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:53:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:53:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:53:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:53:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:53:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:53:44,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:53:44,147 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 23:53:44,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:53:44 BoogieIcfgContainer [2021-10-28 23:53:44,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:53:44,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:53:44,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:53:44,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:53:44,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:53:43" (1/3) ... [2021-10-28 23:53:44,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d235918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:53:44, skipping insertion in model container [2021-10-28 23:53:44,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:43" (2/3) ... [2021-10-28 23:53:44,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d235918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:53:44, skipping insertion in model container [2021-10-28 23:53:44,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:53:44" (3/3) ... [2021-10-28 23:53:44,175 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2021-10-28 23:53:44,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:53:44,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-28 23:53:44,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:53:44,292 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 23:53:44,292 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-28 23:53:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.85) internal successors, (37), 31 states have internal predecessors, (37), 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) [2021-10-28 23:53:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:53:44,326 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:53:44,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:44,327 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrncatErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 23:53:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2021-10-28 23:53:44,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:44,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143143794] [2021-10-28 23:53:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:44,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:44,471 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:53:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:44,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:53:44,525 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:53:44,528 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrncatErr0REQUIRES_VIOLATION [2021-10-28 23:53:44,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:53:44,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr1REQUIRES_VIOLATION [2021-10-28 23:53:44,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr2REQUIRES_VIOLATION [2021-10-28 23:53:44,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr3REQUIRES_VIOLATION [2021-10-28 23:53:44,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr4REQUIRES_VIOLATION [2021-10-28 23:53:44,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr5REQUIRES_VIOLATION [2021-10-28 23:53:44,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr6REQUIRES_VIOLATION [2021-10-28 23:53:44,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr7REQUIRES_VIOLATION [2021-10-28 23:53:44,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr8REQUIRES_VIOLATION [2021-10-28 23:53:44,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr9REQUIRES_VIOLATION [2021-10-28 23:53:44,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:53:44,543 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 23:53:44,548 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:53:44,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:53:44 BoogieIcfgContainer [2021-10-28 23:53:44,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:53:44,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:53:44,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:53:44,573 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:53:44,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:53:44" (3/4) ... [2021-10-28 23:53:44,576 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:53:44,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:53:44,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:53:44,622 INFO L168 Benchmark]: Toolchain (without parser) took 1284.18 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 48.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:44,623 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:44,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.98 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 49.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:44,625 INFO L168 Benchmark]: Boogie Preprocessor took 63.93 ms. Allocated memory is still 94.4 MB. Free memory was 49.2 MB in the beginning and 47.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:44,626 INFO L168 Benchmark]: RCFGBuilder took 435.25 ms. Allocated memory is still 94.4 MB. Free memory was 47.6 MB in the beginning and 64.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:44,627 INFO L168 Benchmark]: TraceAbstraction took 418.63 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 50.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:44,628 INFO L168 Benchmark]: Witness Printer took 47.51 ms. Allocated memory is still 94.4 MB. Free memory was 50.3 MB in the beginning and 48.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:44,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.98 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 49.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.93 ms. Allocated memory is still 94.4 MB. Free memory was 49.2 MB in the beginning and 47.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 435.25 ms. Allocated memory is still 94.4 MB. Free memory was 47.6 MB in the beginning and 64.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 418.63 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 50.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 47.51 ms. Allocated memory is still 94.4 MB. Free memory was 50.3 MB in the beginning and 48.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L24] char *s1; [L25] char *s2; [L26] int n = __VERIFIER_nondet_int(); [L27] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={3:7}, s2={4:5}] [L5] char *s = s1; VAL [\old(n)=0, n=0, s={3:7}, s1={3:7}, s1={3:7}, s2={4:5}, s2={4:5}] [L7] \read(*s) - UnprovableResult [Line: 23]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 7]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: 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: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-10-28 23:53:44,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c144a9c3-b216-40e1-be73-199b740ff931/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...