./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/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_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/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_b813d34a-eca8-4564-9a7c-7e5dd6212f20/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 c2374f3fa60393b4239ba01cfdc738061c6be504efc61284895c5c63f0df9bcb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:54:29,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:54:29,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:54:30,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:54:30,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:54:30,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:54:30,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:54:30,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:54:30,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:54:30,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:54:30,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:54:30,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:54:30,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:54:30,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:54:30,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:54:30,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:54:30,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:54:30,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:54:30,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:54:30,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:54:30,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:54:30,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:54:30,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:54:30,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:54:30,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:54:30,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:54:30,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:54:30,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:54:30,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:54:30,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:54:30,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:54:30,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:54:30,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:54:30,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:54:30,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:54:30,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:54:30,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:54:30,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:54:30,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:54:30,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:54:30,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:54:30,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 15:54:30,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:54:30,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:54:30,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:54:30,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:54:30,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:54:30,162 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:54:30,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 15:54:30,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 15:54:30,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:54:30,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:54:30,164 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 15:54:30,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 15:54:30,171 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 15:54:30,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:54:30,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:54:30,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:54:30,172 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:54:30,172 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:54:30,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:54:30,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:54:30,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:54:30,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:54:30,173 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 15:54:30,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 15:54:30,173 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_b813d34a-eca8-4564-9a7c-7e5dd6212f20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2374f3fa60393b4239ba01cfdc738061c6be504efc61284895c5c63f0df9bcb [2021-11-23 15:54:30,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:54:30,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:54:30,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:54:30,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:54:30,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:54:30,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-11-23 15:54:30,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/data/e0b796bb7/c23f5860b6274170a545ae437f0d0544/FLAG4f9d3c30c [2021-11-23 15:54:31,015 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:54:31,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-11-23 15:54:31,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/data/e0b796bb7/c23f5860b6274170a545ae437f0d0544/FLAG4f9d3c30c [2021-11-23 15:54:31,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/data/e0b796bb7/c23f5860b6274170a545ae437f0d0544 [2021-11-23 15:54:31,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:54:31,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:54:31,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:54:31,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:54:31,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:54:31,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9ca44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31, skipping insertion in model container [2021-11-23 15:54:31,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:54:31,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:54:31,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:54:31,617 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:54:31,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:54:31,658 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:54:31,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31 WrapperNode [2021-11-23 15:54:31,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:54:31,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:54:31,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:54:31,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:54:31,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,712 INFO L137 Inliner]: procedures = 8, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2021-11-23 15:54:31,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:54:31,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:54:31,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:54:31,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:54:31,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:54:31,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:54:31,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:54:31,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:54:31,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:31" (1/1) ... [2021-11-23 15:54:31,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:54:31,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:54:31,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:54:31,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:54:31,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 15:54:31,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:54:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:54:31,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 15:54:31,922 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:54:31,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:54:32,111 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 15:54:32,127 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 15:54:32,128 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 15:54:32,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:32 BoogieIcfgContainer [2021-11-23 15:54:32,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 15:54:32,131 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 15:54:32,131 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 15:54:32,142 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 15:54:32,142 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:32" (1/1) ... [2021-11-23 15:54:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 15:54:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 15:54:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 25 states and 30 transitions. [2021-11-23 15:54:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-11-23 15:54:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-23 15:54:32,250 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 15:54:32,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 15:54:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:54:32,344 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 15:54:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:54:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:54:32,394 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 15:54:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 15:54:32,424 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2021-11-23 15:54:32,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 03:54:32 ImpRootNode [2021-11-23 15:54:32,447 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 15:54:32,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 15:54:32,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 15:54:32,449 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 15:54:32,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:32" (3/4) ... [2021-11-23 15:54:32,451 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 15:54:32,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/witness.graphml [2021-11-23 15:54:32,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 15:54:32,482 INFO L158 Benchmark]: Toolchain (without parser) took 1087.80ms. Allocated memory is still 104.9MB. Free memory was 63.1MB in the beginning and 52.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 15:54:32,482 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:54:32,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.83ms. Allocated memory is still 104.9MB. Free memory was 62.9MB in the beginning and 80.1MB in the end (delta: -17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 15:54:32,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.74ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 78.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:54:32,484 INFO L158 Benchmark]: Boogie Preprocessor took 57.63ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.5MB in the end (delta: 955.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:54:32,485 INFO L158 Benchmark]: RCFGBuilder took 358.53ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 66.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 15:54:32,486 INFO L158 Benchmark]: CodeCheck took 316.33ms. Allocated memory is still 104.9MB. Free memory was 65.9MB in the beginning and 54.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 15:54:32,487 INFO L158 Benchmark]: Witness Printer took 32.59ms. Allocated memory is still 104.9MB. Free memory was 54.5MB in the beginning and 52.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:54:32,491 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, 25 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L24] char *s1; [L25] char *s2; [L26] int n = __VERIFIER_nondet_int(); [L27] CALL cstrncat(s1, s2, n) [L5] char *s = s1; VAL [\old(n)=0, n=0, s={4:3}, s1={4:3}, s1={4:3}, s2={2:5}, s2={2:5}] [L7] \read(*s) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.83ms. Allocated memory is still 104.9MB. Free memory was 62.9MB in the beginning and 80.1MB in the end (delta: -17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.74ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 78.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.63ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.5MB in the end (delta: 955.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.53ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 66.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 316.33ms. Allocated memory is still 104.9MB. Free memory was 65.9MB in the beginning and 54.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 32.59ms. Allocated memory is still 104.9MB. Free memory was 54.5MB in the beginning and 52.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 15:54:32,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b813d34a-eca8-4564-9a7c-7e5dd6212f20/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)