./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak --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 41f0468d692f5518317d4661ccff168131d2a4eb ..................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 17:15:32,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:15:32,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:15:32,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:15:32,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:15:32,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:15:32,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:15:32,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:15:32,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:15:32,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:15:32,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:15:32,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:15:32,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:15:32,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:15:32,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:15:32,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:15:32,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:15:32,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:15:32,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:15:32,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:15:32,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:15:32,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:15:32,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:15:32,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:15:32,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:15:32,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:15:32,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:15:32,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:15:32,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:15:32,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:15:32,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:15:32,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:15:32,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:15:32,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:15:32,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:15:32,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:15:32,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:15:32,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:15:32,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:15:32,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:15:32,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:15:32,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-01 17:15:32,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:15:32,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:15:32,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:15:32,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:15:32,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:15:32,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:15:32,521 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 17:15:32,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:15:32,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:15:32,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:15:32,522 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 17:15:32,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 17:15:32,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 17:15:32,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:15:32,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:15:32,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:15:32,524 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:15:32,524 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:15:32,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:15:32,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:15:32,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:15:32,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:15:32,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:15:32,526 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:15:32,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:15:32,527 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-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41f0468d692f5518317d4661ccff168131d2a4eb [2020-12-01 17:15:32,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:15:32,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:15:33,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:15:33,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:15:33,006 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:15:33,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2020-12-01 17:15:33,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/data/49e540746/575c21897097418b85ab77949eec6749/FLAGcd1e12a0f [2020-12-01 17:15:33,721 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:15:33,722 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2020-12-01 17:15:33,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/data/49e540746/575c21897097418b85ab77949eec6749/FLAGcd1e12a0f [2020-12-01 17:15:34,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/data/49e540746/575c21897097418b85ab77949eec6749 [2020-12-01 17:15:34,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:15:34,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:15:34,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:15:34,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:15:34,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:15:34,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c28d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34, skipping insertion in model container [2020-12-01 17:15:34,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:15:34,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:15:34,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:15:34,377 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:15:34,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:15:34,446 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:15:34,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34 WrapperNode [2020-12-01 17:15:34,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:15:34,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:15:34,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:15:34,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:15:34,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:15:34,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:15:34,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:15:34,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:15:34,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... [2020-12-01 17:15:34,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:15:34,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:15:34,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:15:34,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:15:34,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:15:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:15:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 17:15:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:15:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:15:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 17:15:35,011 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:15:35,012 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-01 17:15:35,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:15:35 BoogieIcfgContainer [2020-12-01 17:15:35,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:15:35,016 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:15:35,017 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:15:35,031 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:15:35,032 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:15:35" (1/1) ... [2020-12-01 17:15:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:15:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:15:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2020-12-01 17:15:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-12-01 17:15:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 17:15:35,100 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:15:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:15:35,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:15:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:15:35,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:15:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:15:35,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:15:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:15:35,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:15:35,518 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2020-12-01 17:15:35,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:15:35 ImpRootNode [2020-12-01 17:15:35,550 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:15:35,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:15:35,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:15:35,555 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:15:35,556 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:15:35" (3/4) ... [2020-12-01 17:15:35,562 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:15:35,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2fb2082f-56bb-4bb6-b21b-e078f242ace1/bin/ukojak/witness.graphml [2020-12-01 17:15:35,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:15:35,647 INFO L168 Benchmark]: Toolchain (without parser) took 1530.05 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 42.6 MB in the beginning and 68.6 MB in the end (delta: -26.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:15:35,649 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:15:35,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.81 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 42.3 MB in the beginning and 77.1 MB in the end (delta: -34.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:15:35,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 98.6 MB. Free memory was 77.1 MB in the beginning and 75.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:15:35,652 INFO L168 Benchmark]: Boogie Preprocessor took 32.28 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:15:35,653 INFO L168 Benchmark]: RCFGBuilder took 481.43 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 57.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 17:15:35,654 INFO L168 Benchmark]: CodeCheck took 533.97 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 70.7 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:15:35,655 INFO L168 Benchmark]: Witness Printer took 90.40 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:15:35,662 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. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, 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, 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(); [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; [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 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.81 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 42.3 MB in the beginning and 77.1 MB in the end (delta: -34.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 98.6 MB. Free memory was 77.1 MB in the beginning and 75.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.28 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 481.43 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 57.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 533.97 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 70.7 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 90.40 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 68.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...