./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f ............................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-24 10:13:34,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:34,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:34,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:34,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:34,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:34,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:34,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:34,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:34,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:34,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:34,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:34,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:34,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:34,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:34,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:34,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:34,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:34,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:34,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:34,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:34,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:34,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:34,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:34,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:34,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:34,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:34,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:34,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:34,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:34,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:34,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:34,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:34,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:34,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:34,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:34,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:34,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:34,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:34,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:34,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:34,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:13:34,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:34,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:34,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:34,349 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:34,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:34,356 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:34,356 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:13:34,356 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:34,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:34,357 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:13:34,358 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:13:34,358 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:34,359 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:13:34,359 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:13:34,359 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:13:34,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:13:34,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:13:34,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:34,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:34,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:13:34,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:13:34,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:34,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:34,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:13:34,363 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:13:34,363 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:13:34,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:34,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:34,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:34,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:34,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:34,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:34,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:34,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:34,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:34,367 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:13:34,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:13:34,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:34,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:34,369 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-10-24 10:13:34,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:34,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:34,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:34,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:34,716 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:34,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-10-24 10:13:34,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/data/ae26db455/bb19278162c94b9a920d9da29b320871/FLAGa71697367 [2021-10-24 10:13:35,200 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:35,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-10-24 10:13:35,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/data/ae26db455/bb19278162c94b9a920d9da29b320871/FLAGa71697367 [2021-10-24 10:13:35,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/data/ae26db455/bb19278162c94b9a920d9da29b320871 [2021-10-24 10:13:35,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:35,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:35,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:35,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:35,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:35,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258006c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35, skipping insertion in model container [2021-10-24 10:13:35,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:35,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:35,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:35,869 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:13:35,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:35,890 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:13:35,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35 WrapperNode [2021-10-24 10:13:35,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:35,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:35,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:13:35,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:13:35,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:35,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:13:35,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:13:35,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:13:35,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:13:35,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:13:35,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:13:35,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:13:35,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (1/1) ... [2021-10-24 10:13:35,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:35,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:13:35,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:13:36,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:13:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:13:36,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:13:36,306 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 10:13:36,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:36 BoogieIcfgContainer [2021-10-24 10:13:36,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:13:36,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:13:36,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:13:36,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:13:36,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:35" (1/3) ... [2021-10-24 10:13:36,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec5f421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:36, skipping insertion in model container [2021-10-24 10:13:36,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:35" (2/3) ... [2021-10-24 10:13:36,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec5f421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:36, skipping insertion in model container [2021-10-24 10:13:36,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:36" (3/3) ... [2021-10-24 10:13:36,317 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2021-10-24 10:13:36,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:13:36,335 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 10:13:36,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:13:36,398 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:13:36,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 10:13:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 2.1) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:13:36,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:36,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:13:36,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:13:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:36,422 INFO L82 PathProgramCache]: Analyzing trace with hash 80117, now seen corresponding path program 1 times [2021-10-24 10:13:36,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:13:36,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142812117] [2021-10-24 10:13:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:36,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:13:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:36,554 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:13:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:36,619 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:13:36,624 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:13:36,625 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:13:36,627 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:13:36,628 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:13:36,629 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:13:36,629 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:13:36,629 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:13:36,630 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:13:36,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:13:36,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:13:36,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:13:36 BoogieIcfgContainer [2021-10-24 10:13:36,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:13:36,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:13:36,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:13:36,661 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:13:36,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:36" (3/4) ... [2021-10-24 10:13:36,664 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:13:36,723 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:13:36,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:13:36,730 INFO L168 Benchmark]: Toolchain (without parser) took 1095.28 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 71.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:36,731 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 96.4 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:36,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.53 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 101.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:36,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.16 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 100.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:36,733 INFO L168 Benchmark]: Boogie Preprocessor took 19.89 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 98.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:36,734 INFO L168 Benchmark]: RCFGBuilder took 366.46 ms. Allocated memory is still 125.8 MB. Free memory was 98.9 MB in the beginning and 87.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:36,734 INFO L168 Benchmark]: TraceAbstraction took 346.82 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 73.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:36,735 INFO L168 Benchmark]: Witness Printer took 63.50 ms. Allocated memory is still 125.8 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:36,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 96.4 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.53 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 101.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.16 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 100.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.89 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 98.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 366.46 ms. Allocated memory is still 125.8 MB. Free memory was 98.9 MB in the beginning and 87.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 346.82 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 73.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 63.50 ms. Allocated memory is still 125.8 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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++ - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 245.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.6ms SsaConstructionTime, 37.5ms SatisfiabilityAnalysisTime, 0.0ms 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, 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! [2021-10-24 10:13:36,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1c52f1a-6542-4e9f-a0cc-a861c41309e2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...