./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25bb35238109f4fc42bc09877cec45401fedd3ae ................................................................................................................................................................................................................................................................................ 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-4e77c04 [2021-10-13 01:04:44,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:04:44,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:04:44,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:04:44,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:04:44,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:04:44,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:04:44,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:04:44,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:04:44,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:04:44,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:04:44,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:04:44,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:04:44,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:04:44,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:04:44,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:04:44,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:04:44,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:04:44,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:04:44,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:04:44,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:04:44,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:04:44,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:04:44,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:04:44,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:04:44,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:04:44,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:04:44,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:04:44,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:04:44,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:04:44,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:04:44,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:04:44,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:04:44,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:04:44,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:04:44,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:04:44,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:04:44,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:04:44,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:04:44,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:04:44,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:04:44,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 01:04:44,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:04:44,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:04:44,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:04:44,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:04:44,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:04:44,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:04:44,491 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:04:44,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:04:44,492 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:04:44,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:04:44,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:04:44,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:04:44,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:04:44,494 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:04:44,494 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:04:44,494 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:04:44,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:04:44,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:04:44,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:04:44,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:04:44,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:04:44,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:04:44,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:04:44,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:04:44,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:04:44,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:04:44,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:04:44,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:04:44,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:04:44,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25bb35238109f4fc42bc09877cec45401fedd3ae [2021-10-13 01:04:44,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:04:44,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:04:44,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:04:44,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:04:44,793 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:04:44,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-10-13 01:04:44,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/data/82b981823/05a58face07e404a895419036cfa82f2/FLAG3884218d0 [2021-10-13 01:04:45,376 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:04:45,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-10-13 01:04:45,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/data/82b981823/05a58face07e404a895419036cfa82f2/FLAG3884218d0 [2021-10-13 01:04:45,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/data/82b981823/05a58face07e404a895419036cfa82f2 [2021-10-13 01:04:45,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:04:45,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:04:45,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:04:45,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:04:45,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:04:45,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:45,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3b7b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45, skipping insertion in model container [2021-10-13 01:04:45,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:45,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:04:45,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:04:45,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:04:45,956 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:04:45,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:04:45,982 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:04:45,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45 WrapperNode [2021-10-13 01:04:45,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:04:45,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:04:45,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:04:45,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:04:45,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:45,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:04:46,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:04:46,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:04:46,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:04:46,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (1/1) ... [2021-10-13 01:04:46,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:04:46,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:04:46,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:04:46,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:04:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:04:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:04:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2021-10-13 01:04:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:04:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:04:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2021-10-13 01:04:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 01:04:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:04:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:04:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:04:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:04:46,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:04:46,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:04:46,464 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-13 01:04:46,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:04:46 BoogieIcfgContainer [2021-10-13 01:04:46,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:04:46,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:04:46,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:04:46,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:04:46,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:04:45" (1/3) ... [2021-10-13 01:04:46,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb5230f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:04:46, skipping insertion in model container [2021-10-13 01:04:46,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:04:45" (2/3) ... [2021-10-13 01:04:46,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb5230f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:04:46, skipping insertion in model container [2021-10-13 01:04:46,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:04:46" (3/3) ... [2021-10-13 01:04:46,475 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2021-10-13 01:04:46,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:04:46,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-13 01:04:46,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:04:46,535 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, mConcurrency=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 [2021-10-13 01:04:46,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-13 01:04:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.85) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:04:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:04:46,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:04:46,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:04:46,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrncatErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION (and 7 more)] === [2021-10-13 01:04:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:04:46,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2021-10-13 01:04:46,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:04:46,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025222068] [2021-10-13 01:04:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:04:46,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:04:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:04:46,649 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:04:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:04:46,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:04:46,688 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:04:46,690 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrncatErr0REQUIRES_VIOLATION [2021-10-13 01:04:46,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:04:46,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr1REQUIRES_VIOLATION [2021-10-13 01:04:46,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr2REQUIRES_VIOLATION [2021-10-13 01:04:46,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr3REQUIRES_VIOLATION [2021-10-13 01:04:46,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr4REQUIRES_VIOLATION [2021-10-13 01:04:46,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr5REQUIRES_VIOLATION [2021-10-13 01:04:46,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr6REQUIRES_VIOLATION [2021-10-13 01:04:46,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr7REQUIRES_VIOLATION [2021-10-13 01:04:46,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr8REQUIRES_VIOLATION [2021-10-13 01:04:46,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrncatErr9REQUIRES_VIOLATION [2021-10-13 01:04:46,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:04:46,702 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:04:46,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:04:46 BoogieIcfgContainer [2021-10-13 01:04:46,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:04:46,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:04:46,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:04:46,720 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:04:46,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:04:46" (3/4) ... [2021-10-13 01:04:46,722 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:04:46,761 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:04:46,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:04:46,763 INFO L168 Benchmark]: Toolchain (without parser) took 1011.88 ms. Allocated memory is still 100.7 MB. Free memory was 67.3 MB in the beginning and 49.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:46,763 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:04:46,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.19 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 76.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:46,765 INFO L168 Benchmark]: Boogie Preprocessor took 31.93 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:46,765 INFO L168 Benchmark]: RCFGBuilder took 450.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 65.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:46,766 INFO L168 Benchmark]: TraceAbstraction took 250.64 ms. Allocated memory is still 100.7 MB. Free memory was 64.4 MB in the beginning and 51.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:46,767 INFO L168 Benchmark]: Witness Printer took 41.49 ms. Allocated memory is still 100.7 MB. Free memory was 51.4 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:46,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.19 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 76.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.93 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 450.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 65.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 250.64 ms. Allocated memory is still 100.7 MB. Free memory was 64.4 MB in the beginning and 51.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 41.49 ms. Allocated memory is still 100.7 MB. Free memory was 51.4 MB in the beginning and 49.3 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: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L24] char *s1; [L25] char *s2; [L26] int n = __VERIFIER_nondet_int(); [L27] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={3:7}, s2={4:5}] [L5] char *s = s1; VAL [\old(n)=0, n=0, s={3:7}, s1={3:7}, s1={3:7}, s2={4:5}, s2={4:5}] [L7] \read(*s) - UnprovableResult [Line: 23]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 7]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 172.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: 7.1ms SsaConstructionTime, 25.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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! [2021-10-13 01:04:46,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9130a61c-ce8d-4a41-a452-a66b5b74cb99/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...