./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:44:30,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:44:30,933 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-19 03:44:30,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:44:30,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:44:30,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:44:30,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:44:30,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:44:30,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:44:30,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:44:30,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:44:30,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:44:30,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:44:30,973 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 03:44:30,973 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 03:44:30,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 03:44:30,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:44:30,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:44:30,976 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:44:30,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:44:30,977 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:44:30,978 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:44:30,978 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:44:30,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:44:30,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:44:30,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:44:30,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:44:30,981 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:44:30,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:44:30,982 INFO L153 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_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2023-11-19 03:44:31,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:44:31,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:44:31,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:44:31,266 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:44:31,267 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:44:31,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2023-11-19 03:44:34,269 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:44:34,515 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:44:34,515 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2023-11-19 03:44:34,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/data/052f61a1e/50a7eca1733c442abed5e6e3dddfa289/FLAG8a2f291fd [2023-11-19 03:44:34,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/data/052f61a1e/50a7eca1733c442abed5e6e3dddfa289 [2023-11-19 03:44:34,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:44:34,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:44:34,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:44:34,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:44:34,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:44:34,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29756c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34, skipping insertion in model container [2023-11-19 03:44:34,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:44:34,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:44:34,738 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:44:34,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:44:34,764 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:44:34,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34 WrapperNode [2023-11-19 03:44:34,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:44:34,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:44:34,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:44:34,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:44:34,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,811 INFO L138 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2023-11-19 03:44:34,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:44:34,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:44:34,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:44:34,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:44:34,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:44:34,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:44:34,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:44:34,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:44:34,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:34" (1/1) ... [2023-11-19 03:44:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:44:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:44:34,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:44:34,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:44:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:44:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:44:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:44:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:44:35,038 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:44:35,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:44:35,290 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:44:35,318 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:44:35,324 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 03:44:35,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:35 BoogieIcfgContainer [2023-11-19 03:44:35,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:44:35,336 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:44:35,336 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:44:35,347 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:44:35,347 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:35" (1/1) ... [2023-11-19 03:44:35,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:44:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:44:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2023-11-19 03:44:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-19 03:44:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 03:44:35,430 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:44:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:44:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:35,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:44:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:35,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:44:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:35,617 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:44:35,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:44:35 ImpRootNode [2023-11-19 03:44:35,641 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:44:35,642 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:44:35,642 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:44:35,643 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:44:35,643 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:35" (3/4) ... [2023-11-19 03:44:35,645 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 03:44:35,686 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:44:35,687 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:44:35,688 INFO L158 Benchmark]: Toolchain (without parser) took 1135.83ms. Allocated memory is still 205.5MB. Free memory was 167.9MB in the beginning and 126.9MB in the end (delta: 41.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-19 03:44:35,688 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 113.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:35,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.10ms. Allocated memory is still 205.5MB. Free memory was 167.9MB in the beginning and 158.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:44:35,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.36ms. Allocated memory is still 205.5MB. Free memory was 158.4MB in the beginning and 156.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:44:35,691 INFO L158 Benchmark]: Boogie Preprocessor took 27.47ms. Allocated memory is still 205.5MB. Free memory was 156.3MB in the beginning and 155.4MB in the end (delta: 905.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:35,692 INFO L158 Benchmark]: RCFGBuilder took 491.25ms. Allocated memory is still 205.5MB. Free memory was 155.4MB in the beginning and 141.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:44:35,692 INFO L158 Benchmark]: CodeCheck took 306.05ms. Allocated memory is still 205.5MB. Free memory was 141.6MB in the beginning and 129.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 03:44:35,693 INFO L158 Benchmark]: Witness Printer took 44.58ms. Allocated memory is still 205.5MB. Free memory was 129.0MB in the beginning and 126.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:44:35,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 18 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L30] CALL cstrncpy(s1, s2, n) [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1, dst={3:-1}, n=1, s1={3:-1}, s1={3:-1}, s2={2:-1}, s2={2:-1}, src={2:-1}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 113.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.10ms. Allocated memory is still 205.5MB. Free memory was 167.9MB in the beginning and 158.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.36ms. Allocated memory is still 205.5MB. Free memory was 158.4MB in the beginning and 156.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.47ms. Allocated memory is still 205.5MB. Free memory was 156.3MB in the beginning and 155.4MB in the end (delta: 905.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 491.25ms. Allocated memory is still 205.5MB. Free memory was 155.4MB in the beginning and 141.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 306.05ms. Allocated memory is still 205.5MB. Free memory was 141.6MB in the beginning and 129.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 44.58ms. Allocated memory is still 205.5MB. Free memory was 129.0MB in the beginning and 126.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 03:44:35,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e8c45f-fa2f-4538-a8f7-40d797c474a4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)