./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 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl --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 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:03,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:03,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:03,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:03,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:03,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:03,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:03,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:03,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:03,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:03,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:03,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:03,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:03,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:03,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:03,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:03,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:03,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:03,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:03,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:03,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:03,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:03,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:03,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:03,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:03,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:03,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:03,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:03,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:03,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:03,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:03,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:03,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:03,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:03,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:03,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:03,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:03,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:03,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:03,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:03,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:03,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 17:02:03,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:03,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:03,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:03,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:03,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:03,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:03,561 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:03,561 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:03,561 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:03,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:02:03,563 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:03,563 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:03,563 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:02:03,563 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:02:03,564 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:03,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:02:03,564 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:02:03,564 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:02:03,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:02:03,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:02:03,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:03,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:03,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:02:03,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:02:03,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:03,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:03,568 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:02:03,568 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:02:03,569 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:02:03,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:03,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:02:03,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:03,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:03,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:03,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:03,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:03,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:03,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:03,571 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:02:03,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:02:03,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:03,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:03,572 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_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-11-23 17:02:03,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:03,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:03,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:03,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:03,971 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:03,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-23 17:02:04,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/7ab6b2825/c48b0d9627e1455eb8d8c41d091f8ece/FLAGb4b54352f [2021-11-23 17:02:04,553 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:04,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-23 17:02:04,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/7ab6b2825/c48b0d9627e1455eb8d8c41d091f8ece/FLAGb4b54352f [2021-11-23 17:02:04,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/7ab6b2825/c48b0d9627e1455eb8d8c41d091f8ece [2021-11-23 17:02:04,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:04,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:04,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:04,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:04,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:04,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:04" (1/1) ... [2021-11-23 17:02:04,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c83febf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:04, skipping insertion in model container [2021-11-23 17:02:04,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:04" (1/1) ... [2021-11-23 17:02:04,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:04,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:05,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:05,133 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:02:05,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:05,161 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:02:05,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05 WrapperNode [2021-11-23 17:02:05,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:05,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:05,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:02:05,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:02:05,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,198 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2021-11-23 17:02:05,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:05,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:02:05,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:02:05,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:02:05,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:02:05,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:02:05,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:02:05,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:02:05,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:05" (1/1) ... [2021-11-23 17:02:05,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:05,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:02:05,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:02:05,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:02:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:02:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:02:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:02:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:02:05,407 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:02:05,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:02:05,660 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:02:05,680 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:02:05,686 INFO L158 Benchmark]: Toolchain (without parser) took 759.11ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.6MB in the end (delta: 644.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:05,687 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:05,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.16ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 95.3MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:02:05,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.91ms. Allocated memory is still 117.4MB. Free memory was 95.3MB in the beginning and 93.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:05,691 INFO L158 Benchmark]: Boogie Preprocessor took 22.95ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 92.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:02:05,693 INFO L158 Benchmark]: RCFGBuilder took 460.37ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:02:05,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.16ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 95.3MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.91ms. Allocated memory is still 117.4MB. Free memory was 95.3MB in the beginning and 93.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.95ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 92.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.37ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:02:05,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl --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 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:08,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:08,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:08,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:08,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:08,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:08,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:08,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:08,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:08,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:08,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:08,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:08,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:08,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:08,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:08,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:08,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:08,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:08,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:08,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:08,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:08,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:08,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:08,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:08,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:08,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:08,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:08,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:08,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:08,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:08,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:08,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:08,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:08,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:08,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:08,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:08,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:08,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:08,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:08,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:08,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:08,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 17:02:08,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:08,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:08,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:08,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:08,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:08,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:08,619 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:08,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:08,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:08,620 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:08,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:08,621 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:08,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:02:08,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:02:08,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:08,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:08,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:02:08,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:02:08,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:08,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:08,624 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:02:08,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:02:08,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:02:08,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:08,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:02:08,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:02:08,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:02:08,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:08,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:08,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:08,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:02:08,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:08,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:08,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:08,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:08,627 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:02:08,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:02:08,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:08,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:08,628 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-11-23 17:02:08,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:08,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:09,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:09,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:09,006 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:09,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-23 17:02:09,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/ae66c9bfd/e3006f6850fc48838928a7993737f8d4/FLAGbabe2b1f1 [2021-11-23 17:02:09,658 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:09,658 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-23 17:02:09,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/ae66c9bfd/e3006f6850fc48838928a7993737f8d4/FLAGbabe2b1f1 [2021-11-23 17:02:10,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/data/ae66c9bfd/e3006f6850fc48838928a7993737f8d4 [2021-11-23 17:02:10,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:10,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:10,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:10,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:10,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:10,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3465d4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10, skipping insertion in model container [2021-11-23 17:02:10,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:10,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:10,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:10,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:02:10,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:10,287 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:02:10,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10 WrapperNode [2021-11-23 17:02:10,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:10,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:10,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:02:10,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:02:10,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,359 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2021-11-23 17:02:10,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:10,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:02:10,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:02:10,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:02:10,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:02:10,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:02:10,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:02:10,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:02:10,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:02:10,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:02:10,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:02:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:02:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:02:10,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:02:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 17:02:10,569 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:02:10,571 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:02:10,738 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:02:10,744 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:02:10,745 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 17:02:10,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:02:10 BoogieIcfgContainer [2021-11-23 17:02:10,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:02:10,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:02:10,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:02:10,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:02:10,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:02:10" (1/3) ... [2021-11-23 17:02:10,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ac8278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:02:10, skipping insertion in model container [2021-11-23 17:02:10,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10" (2/3) ... [2021-11-23 17:02:10,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ac8278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:02:10, skipping insertion in model container [2021-11-23 17:02:10,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:02:10" (3/3) ... [2021-11-23 17:02:10,756 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2021-11-23 17:02:10,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:02:10,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-23 17:02:10,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:02:10,855 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 [2021-11-23 17:02:10,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 17:02:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-11-23 17:02:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 17:02:10,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:02:10,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 17:02:10,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-11-23 17:02:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:02:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2021-11-23 17:02:10,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:02:10,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315724861] [2021-11-23 17:02:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:02:10,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:02:10,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:02:10,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:02:10,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:02:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:02:11,038 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 17:02:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:02:11,113 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 17:02:11,115 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 17:02:11,116 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 7 remaining) [2021-11-23 17:02:11,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 7 remaining) [2021-11-23 17:02:11,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 7 remaining) [2021-11-23 17:02:11,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (3 of 7 remaining) [2021-11-23 17:02:11,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (2 of 7 remaining) [2021-11-23 17:02:11,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 7 remaining) [2021-11-23 17:02:11,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-11-23 17:02:11,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:02:11,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:02:11,337 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 17:02:11,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 17:02:11,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:02:11 BoogieIcfgContainer [2021-11-23 17:02:11,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 17:02:11,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 17:02:11,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 17:02:11,374 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 17:02:11,374 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:02:10" (3/4) ... [2021-11-23 17:02:11,377 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 17:02:11,443 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 17:02:11,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 17:02:11,445 INFO L158 Benchmark]: Toolchain (without parser) took 1400.97ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.3MB in the beginning and 41.9MB in the end (delta: -5.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-23 17:02:11,446 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:11,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.07ms. Allocated memory is still 58.7MB. Free memory was 36.1MB in the beginning and 42.2MB in the end (delta: -6.2MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-23 17:02:11,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.00ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:02:11,449 INFO L158 Benchmark]: Boogie Preprocessor took 58.49ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:11,450 INFO L158 Benchmark]: RCFGBuilder took 326.93ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 29.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:02:11,450 INFO L158 Benchmark]: TraceAbstraction took 619.10ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 28.5MB in the beginning and 43.6MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:11,451 INFO L158 Benchmark]: Witness Printer took 71.35ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 41.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:02:11,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.07ms. Allocated memory is still 58.7MB. Free memory was 36.1MB in the beginning and 42.2MB in the end (delta: -6.2MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.00ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.49ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.93ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 29.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 619.10ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 28.5MB in the beginning and 43.6MB in the end (delta: -15.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.35ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 41.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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(); [L30] CALL cstrncpy(s1, s2, n) [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1073741824, dst={3:0}, n=1073741824, s1={3:0}, s1={3:0}, s2={0:0}, s2={0:0}, src={0:0}] [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, 22 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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! [2021-11-23 17:02:11,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845f9eb6-545e-4910-858c-a4a3b8e33390/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)