./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f35e4091ba483da9f0b2bb24c6ab92803922823d78b3627798806ae597763363 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:01:35,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:01:35,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:01:35,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:01:35,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:01:35,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:01:35,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:01:35,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:01:35,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:01:35,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:01:35,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:01:35,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:01:35,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:01:35,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:01:35,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:01:35,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:01:36,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:01:36,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:01:36,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:01:36,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:01:36,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:01:36,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:01:36,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:01:36,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:01:36,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:01:36,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:01:36,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:01:36,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:01:36,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:01:36,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:01:36,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:01:36,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:01:36,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:01:36,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:01:36,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:01:36,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:01:36,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:01:36,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:01:36,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:01:36,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:01:36,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:01:36,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 15:01:36,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:01:36,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:01:36,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:01:36,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:01:36,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:01:36,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:01:36,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 15:01:36,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 15:01:36,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:01:36,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:01:36,108 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 15:01:36,108 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 15:01:36,108 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 15:01:36,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:01:36,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:01:36,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:01:36,109 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:01:36,109 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:01:36,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:01:36,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:01:36,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:01:36,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:01:36,110 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 15:01:36,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 15:01:36,111 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_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f35e4091ba483da9f0b2bb24c6ab92803922823d78b3627798806ae597763363 [2021-11-23 15:01:36,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:01:36,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:01:36,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:01:36,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:01:36,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:01:36,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2021-11-23 15:01:36,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/data/925005d6d/ae217ccac3d04ad68adb8f4b77c379f3/FLAG6436b2751 [2021-11-23 15:01:37,029 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:01:37,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2021-11-23 15:01:37,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/data/925005d6d/ae217ccac3d04ad68adb8f4b77c379f3/FLAG6436b2751 [2021-11-23 15:01:37,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/data/925005d6d/ae217ccac3d04ad68adb8f4b77c379f3 [2021-11-23 15:01:37,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:01:37,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:01:37,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:01:37,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:01:37,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:01:37,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b86dc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37, skipping insertion in model container [2021-11-23 15:01:37,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:01:37,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:01:37,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:01:37,634 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:01:37,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:01:37,674 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:01:37,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37 WrapperNode [2021-11-23 15:01:37,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:01:37,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:01:37,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:01:37,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:01:37,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,718 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2021-11-23 15:01:37,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:01:37,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:01:37,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:01:37,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:01:37,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:01:37,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:01:37,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:01:37,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:01:37,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:37" (1/1) ... [2021-11-23 15:01:37,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:01:37,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:01:37,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:01:37,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:01:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 15:01:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:01:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:01:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 15:01:37,937 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:01:37,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:01:38,054 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 15:01:38,068 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 15:01:38,069 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 15:01:38,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:38 BoogieIcfgContainer [2021-11-23 15:01:38,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 15:01:38,072 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 15:01:38,073 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 15:01:38,087 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 15:01:38,088 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:38" (1/1) ... [2021-11-23 15:01:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 15:01:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 15:01:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2021-11-23 15:01:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-23 15:01:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-23 15:01:38,158 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 15:01:38,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 15:01:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:01:38,258 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 15:01:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:01:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:01:38,328 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 15:01:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:01:38,352 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2021-11-23 15:01:38,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 03:01:38 ImpRootNode [2021-11-23 15:01:38,376 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 15:01:38,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 15:01:38,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 15:01:38,378 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 15:01:38,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:38" (3/4) ... [2021-11-23 15:01:38,381 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 15:01:38,414 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/witness.graphml [2021-11-23 15:01:38,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 15:01:38,415 INFO L158 Benchmark]: Toolchain (without parser) took 1012.04ms. Allocated memory is still 115.3MB. Free memory was 74.5MB in the beginning and 65.6MB in the end (delta: 8.9MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-11-23 15:01:38,416 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 115.3MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:01:38,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.97ms. Allocated memory is still 115.3MB. Free memory was 74.3MB in the beginning and 90.7MB in the end (delta: -16.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 15:01:38,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.54ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:01:38,418 INFO L158 Benchmark]: Boogie Preprocessor took 39.48ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 997.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:01:38,419 INFO L158 Benchmark]: RCFGBuilder took 311.72ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 78.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 15:01:38,419 INFO L158 Benchmark]: CodeCheck took 304.20ms. Allocated memory is still 115.3MB. Free memory was 77.8MB in the beginning and 67.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 15:01:38,420 INFO L158 Benchmark]: Witness Printer took 36.72ms. Allocated memory is still 115.3MB. Free memory was 67.1MB in the beginning and 65.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:01:38,423 INFO L339 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, 17 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, PartialOrderReductionTime: 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, 2 NumberOfCodeBlocks, 2 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: 5]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] char *s1; [L16] char *s2; [L17] CALL cstrcat(s1, s2) [L3] char *s = s1; VAL [s={2:5}, s1={2:5}, s1={2:5}, s2={4:3}, s2={4:3}] [L5] \read(*s) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 115.3MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.97ms. Allocated memory is still 115.3MB. Free memory was 74.3MB in the beginning and 90.7MB in the end (delta: -16.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.54ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.48ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 997.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 311.72ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 78.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 304.20ms. Allocated memory is still 115.3MB. Free memory was 77.8MB in the beginning and 67.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 36.72ms. Allocated memory is still 115.3MB. Free memory was 67.1MB in the beginning and 65.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 15:01:38,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901ce556-9fa6-41a9-8d2d-07e800972371/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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)