./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ --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 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 00:55:23,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:55:23,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:55:23,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:55:23,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:55:23,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:55:23,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:55:23,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:55:23,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:55:23,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:55:23,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:55:23,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:55:23,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:55:23,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:55:23,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:55:23,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:55:23,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:55:23,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:55:23,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:55:23,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:55:23,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:55:23,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:55:23,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:55:23,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:55:23,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:55:23,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:55:23,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:55:23,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:55:23,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:55:23,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:55:23,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:55:23,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:55:23,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:55:23,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:55:23,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:55:23,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:55:23,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:55:23,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:55:23,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:55:23,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:55:23,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:55:23,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 00:55:23,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:55:23,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:55:23,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:55:23,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:55:23,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:55:23,260 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 00:55:23,260 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 00:55:23,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:55:23,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 00:55:23,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:55:23,261 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 00:55:23,262 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 00:55:23,262 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 00:55:23,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:55:23,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 00:55:23,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:55:23,263 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 00:55:23,263 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 00:55:23,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:55:23,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:55:23,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:55:23,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:55:23,265 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 00:55:23,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:55:23,266 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_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-11-23 00:55:23,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:55:23,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:55:23,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:55:23,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:55:23,624 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:55:23,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-23 00:55:23,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/data/16a8fbafa/b99f997d57624e2fb17f2c3319ce7e2b/FLAG1b8ae00fd [2021-11-23 00:55:24,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:55:24,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-23 00:55:24,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/data/16a8fbafa/b99f997d57624e2fb17f2c3319ce7e2b/FLAG1b8ae00fd [2021-11-23 00:55:24,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/data/16a8fbafa/b99f997d57624e2fb17f2c3319ce7e2b [2021-11-23 00:55:24,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:55:24,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:55:24,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:55:24,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:55:24,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:55:24,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:24,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ba2fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24, skipping insertion in model container [2021-11-23 00:55:24,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:24,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:55:24,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:55:24,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:55:24,927 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:55:24,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:55:24,980 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:55:24,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24 WrapperNode [2021-11-23 00:55:24,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:55:24,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:55:24,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:55:24,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:55:24,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,031 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2021-11-23 00:55:25,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:55:25,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:55:25,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:55:25,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:55:25,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:55:25,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:55:25,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:55:25,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:55:25,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:55:24" (1/1) ... [2021-11-23 00:55:25,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:55:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 00:55:25,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 00:55:25,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 00:55:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 00:55:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:55:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:55:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 00:55:25,288 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:55:25,291 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:55:25,464 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:55:25,500 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:55:25,501 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 00:55:25,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:55:25 BoogieIcfgContainer [2021-11-23 00:55:25,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:55:25,505 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 00:55:25,506 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 00:55:25,539 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 00:55:25,540 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:55:25" (1/1) ... [2021-11-23 00:55:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:55:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:55:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2021-11-23 00:55:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-23 00:55:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 00:55:25,696 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:55:25,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:55:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:55:25,813 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 00:55:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:55:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:55:25,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 00:55:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:55:25,933 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2021-11-23 00:55:25,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 12:55:25 ImpRootNode [2021-11-23 00:55:25,966 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 00:55:25,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 00:55:25,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 00:55:25,967 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 00:55:25,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:55:25" (3/4) ... [2021-11-23 00:55:25,970 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 00:55:26,014 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 00:55:26,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 00:55:26,016 INFO L158 Benchmark]: Toolchain (without parser) took 1371.63ms. Allocated memory is still 111.1MB. Free memory was 80.9MB in the beginning and 58.4MB in the end (delta: 22.5MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-23 00:55:26,017 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 111.1MB. Free memory was 64.1MB in the beginning and 64.0MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:55:26,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.11ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 86.4MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 00:55:26,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.26ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 84.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:55:26,020 INFO L158 Benchmark]: Boogie Preprocessor took 55.13ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 83.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:55:26,021 INFO L158 Benchmark]: RCFGBuilder took 415.84ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 73.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 00:55:26,022 INFO L158 Benchmark]: CodeCheck took 460.44ms. Allocated memory is still 111.1MB. Free memory was 73.1MB in the beginning and 60.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 00:55:26,023 INFO L158 Benchmark]: Witness Printer took 47.96ms. Allocated memory is still 111.1MB. Free memory was 60.4MB in the beginning and 58.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:55:26,029 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, 18 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 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) [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1, dst={2:-1}, n=1, s1={2:-1}, s1={2:-1}, s2={3:-1}, s2={3:-1}, src={3:-1}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 111.1MB. Free memory was 64.1MB in the beginning and 64.0MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.11ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 86.4MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.26ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 84.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.13ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 83.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.84ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 73.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 460.44ms. Allocated memory is still 111.1MB. Free memory was 73.1MB in the beginning and 60.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 47.96ms. Allocated memory is still 111.1MB. Free memory was 60.4MB in the beginning and 58.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 00:55:26,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee932e3-36f1-4a24-99d9-33bd921148d8/bin/ukojak-LBtLqBUTdQ/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)