./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer --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 Automizer --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-a4ecdab [2020-11-29 19:13:55,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:13:55,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:13:55,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:13:55,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:13:55,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:13:55,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:13:55,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:13:55,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:13:55,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:13:55,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:13:55,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:13:55,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:13:55,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:13:55,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:13:55,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:13:55,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:13:55,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:13:55,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:13:55,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:13:55,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:13:55,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:13:55,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:13:55,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:13:55,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:13:55,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:13:55,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:13:55,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:13:55,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:13:55,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:13:55,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:13:55,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:13:55,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:13:55,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:13:55,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:13:55,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:13:55,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:13:55,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:13:55,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:13:55,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:13:55,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:13:55,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 19:13:55,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:13:55,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:13:55,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:13:55,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:13:55,699 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:13:55,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:13:55,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:13:55,700 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:13:55,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:13:55,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:13:55,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:13:55,702 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:13:55,702 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:13:55,703 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:13:55,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:13:55,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:13:55,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:13:55,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:13:55,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:13:55,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:13:55,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:13:55,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:13:55,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:13:55,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:13:55,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:13:55,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:13:55,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:13:55,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:13:55,707 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_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41f0468d692f5518317d4661ccff168131d2a4eb [2020-11-29 19:13:56,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:13:56,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:13:56,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:13:56,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:13:56,043 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:13:56,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2020-11-29 19:13:56,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/data/02e5476f6/1ce9888a8aa44902ac2550635a6d0da0/FLAG8073ad730 [2020-11-29 19:13:56,633 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:13:56,635 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2020-11-29 19:13:56,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/data/02e5476f6/1ce9888a8aa44902ac2550635a6d0da0/FLAG8073ad730 [2020-11-29 19:13:56,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/data/02e5476f6/1ce9888a8aa44902ac2550635a6d0da0 [2020-11-29 19:13:56,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:13:57,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:13:57,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:57,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:13:57,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:13:57,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:56" (1/1) ... [2020-11-29 19:13:57,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25290ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57, skipping insertion in model container [2020-11-29 19:13:57,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:56" (1/1) ... [2020-11-29 19:13:57,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:13:57,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:13:57,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:57,243 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:13:57,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:57,288 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:13:57,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57 WrapperNode [2020-11-29 19:13:57,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:57,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:13:57,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:13:57,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:13:57,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... [2020-11-29 19:13:57,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:13:57,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:13:57,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:13:57,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:13:57,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2020-11-29 19:13:57,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:13:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:13:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2020-11-29 19:13:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:13:57,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 19:13:57,428 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2020-11-29 19:13:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:13:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:13:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:13:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:13:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:13:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:13:57,944 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:13:57,945 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 19:13:57,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:57 BoogieIcfgContainer [2020-11-29 19:13:57,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:13:57,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:13:57,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:13:57,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:13:57,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:13:56" (1/3) ... [2020-11-29 19:13:57,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649206c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:13:57, skipping insertion in model container [2020-11-29 19:13:57,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:57" (2/3) ... [2020-11-29 19:13:57,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649206c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:13:57, skipping insertion in model container [2020-11-29 19:13:57,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:57" (3/3) ... [2020-11-29 19:13:57,957 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2020-11-29 19:13:57,969 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:13:57,974 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 19:13:57,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 19:13:58,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:13:58,014 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:13:58,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:13:58,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:13:58,020 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:13:58,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:13:58,020 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:13:58,020 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:13:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-29 19:13:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:13:58,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:58,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:58,054 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr5REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 19:13:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2020-11-29 19:13:58,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:58,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052925085] [2020-11-29 19:13:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:58,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:58,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:58,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:58,228 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:13:58,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:13:58,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:13:58 BoogieIcfgContainer [2020-11-29 19:13:58,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:13:58,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:13:58,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:13:58,254 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:13:58,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:57" (3/4) ... [2020-11-29 19:13:58,257 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:13:58,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f20416c3-b8ad-4dd0-b037-326a147c0858/bin/uautomizer/witness.graphml [2020-11-29 19:13:58,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:13:58,306 INFO L168 Benchmark]: Toolchain (without parser) took 1303.93 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 58.8 MB in the beginning and 56.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:58,307 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 47.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:13:58,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.36 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 87.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:58,309 INFO L168 Benchmark]: Boogie Preprocessor took 57.35 ms. Allocated memory is still 109.1 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:13:58,310 INFO L168 Benchmark]: RCFGBuilder took 592.50 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 71.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:58,310 INFO L168 Benchmark]: TraceAbstraction took 303.77 ms. Allocated memory is still 109.1 MB. Free memory was 71.5 MB in the beginning and 59.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:58,311 INFO L168 Benchmark]: Witness Printer took 50.61 ms. Allocated memory is still 109.1 MB. Free memory was 59.0 MB in the beginning and 56.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:58,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 47.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.36 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 87.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.35 ms. Allocated memory is still 109.1 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 592.50 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 71.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 303.77 ms. Allocated memory is still 109.1 MB. Free memory was 71.5 MB in the beginning and 59.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 50.61 ms. Allocated memory is still 109.1 MB. Free memory was 59.0 MB in the beginning and 56.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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) VAL [\old(n)=1, s1={5:-1}, s2={2:-2}] [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1, dst={5:-1}, n=1, s1={5:-1}, s1={5:-1}, s2={2:-2}, s2={2:-2}, src={2:-2}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...