./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be --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 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f ...................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-21 20:19:04,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:19:04,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:19:04,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:19:04,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:19:04,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:19:04,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:19:04,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:19:04,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:19:04,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:19:04,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:19:04,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:19:04,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:19:04,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:19:04,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:19:04,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:19:04,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:19:04,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:19:04,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:19:04,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:19:04,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:19:04,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:19:04,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:19:04,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:19:04,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:19:04,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:19:04,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:19:04,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:19:04,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:19:04,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:19:04,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:19:04,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:19:04,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:19:04,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:19:04,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:19:04,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:19:04,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:19:04,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:19:04,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:19:04,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:19:04,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:19:04,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:19:05,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:19:05,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:19:05,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:19:05,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:19:05,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:19:05,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:19:05,054 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:19:05,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:19:05,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:19:05,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:19:05,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:19:05,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:19:05,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:19:05,057 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:19:05,057 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:19:05,058 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:19:05,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:19:05,058 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:19:05,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:19:05,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:19:05,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:19:05,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:19:05,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:19:05,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:19:05,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:19:05,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:19:05,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:19:05,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:19:05,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:19:05,063 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_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-10-21 20:19:05,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:19:05,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:19:05,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:19:05,471 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:19:05,472 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:19:05,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-10-21 20:19:05,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/data/3f0bef300/ee8b635efbda441f8b3c3260615e6003/FLAG2a7b944d2 [2021-10-21 20:19:06,080 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:19:06,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-10-21 20:19:06,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/data/3f0bef300/ee8b635efbda441f8b3c3260615e6003/FLAG2a7b944d2 [2021-10-21 20:19:06,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/data/3f0bef300/ee8b635efbda441f8b3c3260615e6003 [2021-10-21 20:19:06,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:19:06,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:19:06,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:19:06,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:19:06,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:19:06,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66884d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06, skipping insertion in model container [2021-10-21 20:19:06,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:19:06,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:19:06,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:19:06,668 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:19:06,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:19:06,707 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:19:06,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06 WrapperNode [2021-10-21 20:19:06,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:19:06,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:19:06,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:19:06,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:19:06,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:19:06,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:19:06,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:19:06,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:19:06,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (1/1) ... [2021-10-21 20:19:06,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:19:06,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:19:06,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:19:06,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:19:06,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:19:06,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:19:06,881 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2021-10-21 20:19:06,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:19:06,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:19:06,882 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2021-10-21 20:19:06,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:19:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:19:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:19:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:19:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:19:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:19:07,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:19:07,239 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-21 20:19:07,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:19:07 BoogieIcfgContainer [2021-10-21 20:19:07,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:19:07,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:19:07,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:19:07,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:19:07,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:19:06" (1/3) ... [2021-10-21 20:19:07,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5f722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:19:07, skipping insertion in model container [2021-10-21 20:19:07,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:19:06" (2/3) ... [2021-10-21 20:19:07,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5f722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:19:07, skipping insertion in model container [2021-10-21 20:19:07,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:19:07" (3/3) ... [2021-10-21 20:19:07,266 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2021-10-21 20:19:07,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:19:07,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 20:19:07,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:19:07,348 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 [2021-10-21 20:19:07,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 20:19:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-10-21 20:19:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:19:07,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:19:07,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:19:07,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrncpyErr0REQUIRES_VIOLATION === [cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-21 20:19:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:19:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2021-10-21 20:19:07,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:19:07,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634482907] [2021-10-21 20:19:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:19:07,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:19:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:19:07,524 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:19:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:19:07,581 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:19:07,584 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:19:07,586 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrncpyErr0REQUIRES_VIOLATION [2021-10-21 20:19:07,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr1REQUIRES_VIOLATION [2021-10-21 20:19:07,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr2REQUIRES_VIOLATION [2021-10-21 20:19:07,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr3REQUIRES_VIOLATION [2021-10-21 20:19:07,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr4REQUIRES_VIOLATION [2021-10-21 20:19:07,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr5REQUIRES_VIOLATION [2021-10-21 20:19:07,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:19:07,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:19:07,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:19:07,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:19:07 BoogieIcfgContainer [2021-10-21 20:19:07,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:19:07,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:19:07,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:19:07,622 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:19:07,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:19:07" (3/4) ... [2021-10-21 20:19:07,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:19:07,663 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:19:07,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:19:07,666 INFO L168 Benchmark]: Toolchain (without parser) took 1220.31 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 43.5 MB in the beginning and 70.0 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:19:07,667 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:19:07,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.79 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 43.3 MB in the beginning and 83.9 MB in the end (delta: -40.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:19:07,669 INFO L168 Benchmark]: Boogie Preprocessor took 63.01 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 82.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:19:07,670 INFO L168 Benchmark]: RCFGBuilder took 465.91 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 85.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:19:07,671 INFO L168 Benchmark]: TraceAbstraction took 376.92 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 71.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:19:07,672 INFO L168 Benchmark]: Witness Printer took 42.25 ms. Allocated memory is still 111.1 MB. Free memory was 71.5 MB in the beginning and 70.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:19:07,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.79 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 43.3 MB in the beginning and 83.9 MB in the end (delta: -40.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.01 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 82.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 465.91 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 85.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 376.92 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 71.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 42.25 ms. Allocated memory is still 111.1 MB. Free memory was 71.5 MB in the beginning and 70.0 MB in the end (delta: 1.4 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: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L30] CALL cstrncpy(s1, s2, n) VAL [\old(n)=1, s1={3:-1}, s2={5:-2}] [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={5:-2}, s2={5:-2}, src={5:-2}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - 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: 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. - UnprovableResult [Line: 26]: 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, 31 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 257.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 15.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.6ms SsaConstructionTime, 41.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 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! [2021-10-21 20:19:07,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6af3ece-9388-476b-abef-c2f61abb843d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...