./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/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 ead5f421f9d611f4b4a72e6a7fba37c936b2240c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-aa41828 [2018-11-23 02:10:29,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:10:29,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:10:29,185 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:10:29,185 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:10:29,186 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:10:29,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:10:29,187 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:10:29,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:10:29,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:10:29,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:10:29,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:10:29,191 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:10:29,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:10:29,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:10:29,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:10:29,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:10:29,194 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:10:29,196 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:10:29,197 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:10:29,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:10:29,198 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:10:29,200 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:10:29,200 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:10:29,200 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:10:29,201 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:10:29,202 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:10:29,202 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:10:29,203 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:10:29,203 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:10:29,204 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:10:29,204 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:10:29,204 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:10:29,204 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:10:29,205 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:10:29,206 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:10:29,206 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-11-23 02:10:29,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:10:29,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:10:29,217 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:10:29,217 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:10:29,217 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:10:29,217 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:10:29,218 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:10:29,219 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-23 02:10:29,219 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-23 02:10:29,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:10:29,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:10:29,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 02:10:29,219 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:10:29,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:10:29,220 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-23 02:10:29,220 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:10:29,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/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 -> ead5f421f9d611f4b4a72e6a7fba37c936b2240c [2018-11-23 02:10:29,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:10:29,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:10:29,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:10:29,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:10:29,254 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:10:29,255 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-11-23 02:10:29,290 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/data/27dc92155/1d936bc6a0ce4a3aa61a76f029510d31/FLAG0830b0e65 [2018-11-23 02:10:29,702 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:10:29,702 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-11-23 02:10:29,707 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/data/27dc92155/1d936bc6a0ce4a3aa61a76f029510d31/FLAG0830b0e65 [2018-11-23 02:10:29,719 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/data/27dc92155/1d936bc6a0ce4a3aa61a76f029510d31 [2018-11-23 02:10:29,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:10:29,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:10:29,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:10:29,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:10:29,726 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:10:29,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d07e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29, skipping insertion in model container [2018-11-23 02:10:29,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:10:29,750 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:10:29,871 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:10:29,878 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:10:29,891 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:10:29,901 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:10:29,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29 WrapperNode [2018-11-23 02:10:29,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:10:29,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:10:29,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:10:29,902 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:10:29,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:10:29,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:10:29,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:10:29,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:10:29,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... [2018-11-23 02:10:29,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:10:29,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:10:29,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:10:29,982 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:10:29,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/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 [2018-11-23 02:10:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 02:10:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:10:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:10:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 02:10:30,202 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:10:30,202 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 02:10:30,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:30 BoogieIcfgContainer [2018-11-23 02:10:30,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:10:30,203 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-23 02:10:30,203 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-23 02:10:30,209 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-23 02:10:30,209 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:30" (1/1) ... [2018-11-23 02:10:30,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:10:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 02:10:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 25 states and 30 transitions. [2018-11-23 02:10:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2018-11-23 02:10:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-11-23 02:10:30,244 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 02:10:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:10:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:10:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:10:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:10:30,359 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];main_old_#valid := #valid;havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0;havoc main_~s1~0.base, main_~s1~0.offset;havoc main_~s2~0.base, main_~s2~0.offset;assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8;cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post1.base, cstrncat_#t~post1.offset, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6.base, cstrncat_#t~post6.offset, cstrncat_#t~post2.base, cstrncat_#t~post2.offset, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; VAL [ULTIMATE.start_cstrncat_~n=0, ULTIMATE.start_cstrncat_~s1.base=0, ULTIMATE.start_cstrncat_~s1.offset=2, ULTIMATE.start_cstrncat_~s2.base=3, ULTIMATE.start_cstrncat_~s2.offset=4, ULTIMATE.start_cstrncat_~s~0.base=0, ULTIMATE.start_cstrncat_~s~0.offset=2, ULTIMATE.start_main_~n~0=0, ULTIMATE.start_main_~s1~0.base=0, ULTIMATE.start_main_~s1~0.offset=2, ULTIMATE.start_main_~s2~0.base=3, ULTIMATE.start_main_~s2~0.offset=4, |#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_cstrncat_#in~n|=0, |ULTIMATE.start_cstrncat_#in~s1.base|=0, |ULTIMATE.start_cstrncat_#in~s1.offset|=2, |ULTIMATE.start_cstrncat_#in~s2.base|=3, |ULTIMATE.start_cstrncat_#in~s2.offset|=4] [?] assume !(1 == #valid[cstrncat_~s~0.base]); VAL [ULTIMATE.start_cstrncat_~n=0, ULTIMATE.start_cstrncat_~s1.base=0, ULTIMATE.start_cstrncat_~s1.offset=2, ULTIMATE.start_cstrncat_~s2.base=3, ULTIMATE.start_cstrncat_~s2.offset=4, ULTIMATE.start_cstrncat_~s~0.base=0, ULTIMATE.start_cstrncat_~s~0.offset=2, ULTIMATE.start_main_~n~0=0, ULTIMATE.start_main_~s1~0.base=0, ULTIMATE.start_main_~s1~0.offset=2, ULTIMATE.start_main_~s2~0.base=3, ULTIMATE.start_main_~s2~0.offset=4, |#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_cstrncat_#in~n|=0, |ULTIMATE.start_cstrncat_#in~s1.base|=0, |ULTIMATE.start_cstrncat_#in~s1.offset|=2, |ULTIMATE.start_cstrncat_#in~s2.base|=3, |ULTIMATE.start_cstrncat_#in~s2.offset|=4] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L16] havoc main_~s1~0.base, main_~s1~0.offset; [L17] havoc main_~s2~0.base, main_~s2~0.offset; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L19] havoc cstrncat_#res.base, cstrncat_#res.offset; [L19] havoc cstrncat_#t~post1.base, cstrncat_#t~post1.offset, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6.base, cstrncat_#t~post6.offset, cstrncat_#t~post2.base, cstrncat_#t~post2.offset, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset; [L2-L14] cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset; [L2-L14] cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] [L5] call cstrncat_#t~mem0 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L16] havoc main_~s1~0.base, main_~s1~0.offset; [L17] havoc main_~s2~0.base, main_~s2~0.offset; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L19] havoc cstrncat_#res.base, cstrncat_#res.offset; [L19] havoc cstrncat_#t~post1.base, cstrncat_#t~post1.offset, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6.base, cstrncat_#t~post6.offset, cstrncat_#t~post2.base, cstrncat_#t~post2.offset, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset; [L2-L14] cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset; [L2-L14] cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] [L5] call cstrncat_#t~mem0 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9, main_~s1~0, main_~s2~0, main_~n~0; [L16] havoc main_~s1~0; [L17] havoc main_~s2~0; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1, cstrncat_#in~s2, cstrncat_#in~n := main_~s1~0, main_~s2~0, main_~n~0; [L19] havoc cstrncat_#res; [L19] havoc cstrncat_#t~post1, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6, cstrncat_#t~post2, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1, cstrncat_~s2, cstrncat_~n, cstrncat_~s~0; [L2-L14] cstrncat_~s1 := cstrncat_#in~s1; [L2-L14] cstrncat_~s2 := cstrncat_#in~s2; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0 := cstrncat_~s1; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] [L5] FCALL call cstrncat_#t~mem0 := read~int(cstrncat_~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9, main_~s1~0, main_~s2~0, main_~n~0; [L16] havoc main_~s1~0; [L17] havoc main_~s2~0; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1, cstrncat_#in~s2, cstrncat_#in~n := main_~s1~0, main_~s2~0, main_~n~0; [L19] havoc cstrncat_#res; [L19] havoc cstrncat_#t~post1, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6, cstrncat_#t~post2, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1, cstrncat_~s2, cstrncat_~n, cstrncat_~s~0; [L2-L14] cstrncat_~s1 := cstrncat_#in~s1; [L2-L14] cstrncat_~s2 := cstrncat_#in~s2; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0 := cstrncat_~s1; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] [L5] FCALL call cstrncat_#t~mem0 := read~int(cstrncat_~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#NULL!base=0, #NULL!offset=0] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#NULL!base=0, #NULL!offset=0] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0] [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L4] char *s = s1; [L5] \read(*s) ----- [2018-11-23 02:10:30,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 02:10:30 ImpRootNode [2018-11-23 02:10:30,380 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-23 02:10:30,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:10:30,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:10:30,381 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:10:30,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:30" (3/4) ... [2018-11-23 02:10:30,383 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];main_old_#valid := #valid;havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0;havoc main_~s1~0.base, main_~s1~0.offset;havoc main_~s2~0.base, main_~s2~0.offset;assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8;cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post1.base, cstrncat_#t~post1.offset, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6.base, cstrncat_#t~post6.offset, cstrncat_#t~post2.base, cstrncat_#t~post2.offset, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; VAL [ULTIMATE.start_cstrncat_~n=0, ULTIMATE.start_cstrncat_~s1.base=0, ULTIMATE.start_cstrncat_~s1.offset=2, ULTIMATE.start_cstrncat_~s2.base=3, ULTIMATE.start_cstrncat_~s2.offset=4, ULTIMATE.start_cstrncat_~s~0.base=0, ULTIMATE.start_cstrncat_~s~0.offset=2, ULTIMATE.start_main_~n~0=0, ULTIMATE.start_main_~s1~0.base=0, ULTIMATE.start_main_~s1~0.offset=2, ULTIMATE.start_main_~s2~0.base=3, ULTIMATE.start_main_~s2~0.offset=4, |#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_cstrncat_#in~n|=0, |ULTIMATE.start_cstrncat_#in~s1.base|=0, |ULTIMATE.start_cstrncat_#in~s1.offset|=2, |ULTIMATE.start_cstrncat_#in~s2.base|=3, |ULTIMATE.start_cstrncat_#in~s2.offset|=4] [?] assume !(1 == #valid[cstrncat_~s~0.base]); VAL [ULTIMATE.start_cstrncat_~n=0, ULTIMATE.start_cstrncat_~s1.base=0, ULTIMATE.start_cstrncat_~s1.offset=2, ULTIMATE.start_cstrncat_~s2.base=3, ULTIMATE.start_cstrncat_~s2.offset=4, ULTIMATE.start_cstrncat_~s~0.base=0, ULTIMATE.start_cstrncat_~s~0.offset=2, ULTIMATE.start_main_~n~0=0, ULTIMATE.start_main_~s1~0.base=0, ULTIMATE.start_main_~s1~0.offset=2, ULTIMATE.start_main_~s2~0.base=3, ULTIMATE.start_main_~s2~0.offset=4, |#NULL.base|=0, |#NULL.offset|=0, |ULTIMATE.start_cstrncat_#in~n|=0, |ULTIMATE.start_cstrncat_#in~s1.base|=0, |ULTIMATE.start_cstrncat_#in~s1.offset|=2, |ULTIMATE.start_cstrncat_#in~s2.base|=3, |ULTIMATE.start_cstrncat_#in~s2.offset|=4] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L16] havoc main_~s1~0.base, main_~s1~0.offset; [L17] havoc main_~s2~0.base, main_~s2~0.offset; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L19] havoc cstrncat_#res.base, cstrncat_#res.offset; [L19] havoc cstrncat_#t~post1.base, cstrncat_#t~post1.offset, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6.base, cstrncat_#t~post6.offset, cstrncat_#t~post2.base, cstrncat_#t~post2.offset, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset; [L2-L14] cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset; [L2-L14] cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] [L5] call cstrncat_#t~mem0 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L16] havoc main_~s1~0.base, main_~s1~0.offset; [L17] havoc main_~s2~0.base, main_~s2~0.offset; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~s1~0.base, main_~s1~0.offset, main_~s2~0.base, main_~s2~0.offset, main_~n~0; [L19] havoc cstrncat_#res.base, cstrncat_#res.offset; [L19] havoc cstrncat_#t~post1.base, cstrncat_#t~post1.offset, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6.base, cstrncat_#t~post6.offset, cstrncat_#t~post2.base, cstrncat_#t~post2.offset, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset; [L2-L14] cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset; [L2-L14] cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] [L5] call cstrncat_#t~mem0 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL.base=0, #NULL.offset=0, cstrncat_#in~n=0, cstrncat_#in~s1.base=0, cstrncat_#in~s1.offset=2, cstrncat_#in~s2.base=3, cstrncat_#in~s2.offset=4, cstrncat_~n=0, cstrncat_~s1.base=0, cstrncat_~s1.offset=2, cstrncat_~s2.base=3, cstrncat_~s2.offset=4, cstrncat_~s~0.base=0, cstrncat_~s~0.offset=2, main_~n~0=0, main_~s1~0.base=0, main_~s1~0.offset=2, main_~s2~0.base=3, main_~s2~0.offset=4] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9, main_~s1~0, main_~s2~0, main_~n~0; [L16] havoc main_~s1~0; [L17] havoc main_~s2~0; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1, cstrncat_#in~s2, cstrncat_#in~n := main_~s1~0, main_~s2~0, main_~n~0; [L19] havoc cstrncat_#res; [L19] havoc cstrncat_#t~post1, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6, cstrncat_#t~post2, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1, cstrncat_~s2, cstrncat_~n, cstrncat_~s~0; [L2-L14] cstrncat_~s1 := cstrncat_#in~s1; [L2-L14] cstrncat_~s2 := cstrncat_#in~s2; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0 := cstrncat_~s1; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] [L5] FCALL call cstrncat_#t~mem0 := read~int(cstrncat_~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [?] main_old_#valid := #valid; [?] havoc main_#res; [?] havoc main_#t~nondet8, main_#t~ret9, main_~s1~0, main_~s2~0, main_~n~0; [L16] havoc main_~s1~0; [L17] havoc main_~s2~0; [L18] assume -2147483648 <= main_#t~nondet8 && main_#t~nondet8 <= 2147483647; [L18] main_~n~0 := main_#t~nondet8; [L18] havoc main_#t~nondet8; [L19] cstrncat_#in~s1, cstrncat_#in~s2, cstrncat_#in~n := main_~s1~0, main_~s2~0, main_~n~0; [L19] havoc cstrncat_#res; [L19] havoc cstrncat_#t~post1, cstrncat_#t~mem0, cstrncat_#t~post5, cstrncat_#t~post6, cstrncat_#t~post2, cstrncat_#t~mem3, cstrncat_#t~short4, cstrncat_#t~mem7, cstrncat_~s1, cstrncat_~s2, cstrncat_~n, cstrncat_~s~0; [L2-L14] cstrncat_~s1 := cstrncat_#in~s1; [L2-L14] cstrncat_~s2 := cstrncat_#in~s2; [L2-L14] cstrncat_~n := cstrncat_#in~n; [L4] cstrncat_~s~0 := cstrncat_~s1; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] [L5] FCALL call cstrncat_#t~mem0 := read~int(cstrncat_~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0, cstrncat_#in~n=0, cstrncat_#in~s1!base=0, cstrncat_#in~s1!offset=2, cstrncat_#in~s2!base=3, cstrncat_#in~s2!offset=4, cstrncat_~n=0, cstrncat_~s1!base=0, cstrncat_~s1!offset=2, cstrncat_~s2!base=3, cstrncat_~s2!offset=4, cstrncat_~s~0!base=0, cstrncat_~s~0!offset=2, main_~n~0=0, main_~s1~0!base=0, main_~s1~0!offset=2, main_~s2~0!base=3, main_~s2~0!offset=4] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#NULL!base=0, #NULL!offset=0] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#NULL!base=0, #NULL!offset=0] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#NULL!base=0, #NULL!offset=0] [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L4] char *s = s1; [L5] \read(*s) ----- [2018-11-23 02:10:30,410 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e6b07ace-a96c-4575-8542-9fc3c284ba11/bin-2019/ukojak/witness.graphml [2018-11-23 02:10:30,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:10:30,410 INFO L168 Benchmark]: Toolchain (without parser) took 688.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -134.9 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2018-11-23 02:10:30,411 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:10:30,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:10:30,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.59 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:10:30,413 INFO L168 Benchmark]: Boogie Preprocessor took 53.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 02:10:30,413 INFO L168 Benchmark]: RCFGBuilder took 220.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-11-23 02:10:30,414 INFO L168 Benchmark]: CodeCheck took 177.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:10:30,414 INFO L168 Benchmark]: Witness Printer took 29.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:10:30,416 INFO L336 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, 29 locations, 11 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, 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, 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 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: [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L4] char *s = s1; [L5] \read(*s) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.59 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 220.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * CodeCheck took 177.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Witness Printer took 29.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...