./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-b2eff8b [2021-10-28 09:44:08,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:44:08,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:44:08,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:44:08,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:44:08,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:44:08,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:44:08,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:44:08,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:44:08,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:44:08,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:44:08,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:44:08,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:44:08,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:44:08,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:44:08,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:44:08,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:44:08,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:44:08,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:44:08,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:44:08,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:44:08,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:44:09,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:44:09,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:44:09,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:44:09,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:44:09,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:44:09,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:44:09,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:44:09,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:44:09,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:44:09,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:44:09,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:44:09,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:44:09,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:44:09,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:44:09,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:44:09,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:44:09,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:44:09,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:44:09,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:44:09,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:44:09,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:44:09,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:44:09,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:44:09,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:44:09,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:44:09,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:44:09,086 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:44:09,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:44:09,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:44:09,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:44:09,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:44:09,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:44:09,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:44:09,088 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:44:09,088 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:44:09,088 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:44:09,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:44:09,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:44:09,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:44:09,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:44:09,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:44:09,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:44:09,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:44:09,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:44:09,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:44:09,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:44:09,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:44:09,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:44:09,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:44:09,098 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_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-10-28 09:44:09,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:44:09,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:44:09,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:44:09,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:44:09,432 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:44:09,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-10-28 09:44:09,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/data/35576b614/223789182d6142619e4235a0888b0720/FLAG95b454aee [2021-10-28 09:44:10,063 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:44:10,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-10-28 09:44:10,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/data/35576b614/223789182d6142619e4235a0888b0720/FLAG95b454aee [2021-10-28 09:44:10,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/data/35576b614/223789182d6142619e4235a0888b0720 [2021-10-28 09:44:10,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:44:10,447 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:44:10,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:44:10,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:44:10,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:44:10,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc18d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10, skipping insertion in model container [2021-10-28 09:44:10,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:44:10,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:44:10,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:44:10,701 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:44:10,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:44:10,765 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:44:10,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10 WrapperNode [2021-10-28 09:44:10,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:44:10,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:44:10,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:44:10,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:44:10,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:44:10,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:44:10,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:44:10,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:44:10,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (1/1) ... [2021-10-28 09:44:10,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:44:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:10,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:44:10,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:44:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:44:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:44:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2021-10-28 09:44:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:44:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:44:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2021-10-28 09:44:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:44:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:44:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:44:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:44:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:44:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:44:11,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:44:11,298 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 09:44:11,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:11 BoogieIcfgContainer [2021-10-28 09:44:11,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:44:11,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:44:11,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:44:11,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:44:11,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:44:10" (1/3) ... [2021-10-28 09:44:11,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed961f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:44:11, skipping insertion in model container [2021-10-28 09:44:11,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:44:10" (2/3) ... [2021-10-28 09:44:11,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed961f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:44:11, skipping insertion in model container [2021-10-28 09:44:11,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:11" (3/3) ... [2021-10-28 09:44:11,312 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2021-10-28 09:44:11,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:44:11,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:44:11,370 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:44:11,378 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:44:11,378 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:44:11,403 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) [2021-10-28 09:44:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:44:11,415 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:11,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:11,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrncpyErr0REQUIRES_VIOLATION === [cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-28 09:44:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2021-10-28 09:44:11,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:11,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010405276] [2021-10-28 09:44:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:11,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:11,562 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:44:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:44:11,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:44:11,618 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:44:11,619 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrncpyErr0REQUIRES_VIOLATION [2021-10-28 09:44:11,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr1REQUIRES_VIOLATION [2021-10-28 09:44:11,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr2REQUIRES_VIOLATION [2021-10-28 09:44:11,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr3REQUIRES_VIOLATION [2021-10-28 09:44:11,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr4REQUIRES_VIOLATION [2021-10-28 09:44:11,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncpyErr5REQUIRES_VIOLATION [2021-10-28 09:44:11,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:44:11,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:44:11,629 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 09:44:11,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:44:11,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:44:11 BoogieIcfgContainer [2021-10-28 09:44:11,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:44:11,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:44:11,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:44:11,656 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:44:11,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:44:11" (3/4) ... [2021-10-28 09:44:11,659 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:44:11,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:44:11,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:44:11,706 INFO L168 Benchmark]: Toolchain (without parser) took 1258.18 ms. Allocated memory is still 115.3 MB. Free memory was 84.8 MB in the beginning and 63.6 MB in the end (delta: 21.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:44:11,707 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 115.3 MB. Free memory was 71.3 MB in the beginning and 71.3 MB in the end (delta: 52.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:44:11,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.62 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 91.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:44:11,709 INFO L168 Benchmark]: Boogie Preprocessor took 59.69 ms. Allocated memory is still 115.3 MB. Free memory was 91.2 MB in the beginning and 89.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:44:11,710 INFO L168 Benchmark]: RCFGBuilder took 473.18 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 79.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:44:11,711 INFO L168 Benchmark]: TraceAbstraction took 351.87 ms. Allocated memory is still 115.3 MB. Free memory was 79.2 MB in the beginning and 65.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:44:11,711 INFO L168 Benchmark]: Witness Printer took 48.53 ms. Allocated memory is still 115.3 MB. Free memory was 65.3 MB in the beginning and 63.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:44:11,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 115.3 MB. Free memory was 71.3 MB in the beginning and 71.3 MB in the end (delta: 52.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.62 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 91.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.69 ms. Allocated memory is still 115.3 MB. Free memory was 91.2 MB in the beginning and 89.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 473.18 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 79.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 351.87 ms. Allocated memory is still 115.3 MB. Free memory was 79.2 MB in the beginning and 65.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 48.53 ms. Allocated memory is still 115.3 MB. Free memory was 65.3 MB in the beginning and 63.6 MB in the end (delta: 1.7 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, 0.0s 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: 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: 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=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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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! [2021-10-28 09:44:11,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7398f635-498d-4ed7-82f3-f9939a46a166/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...