./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcat_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_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/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_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/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_e6c80557-f462-46f3-97b7-88606a9bb335/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 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 .............................................................................................................................................................................................................................................................. 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 [2021-10-12 23:59:05,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:05,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:05,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:05,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:05,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:05,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:05,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:05,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:05,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:05,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:05,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:05,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:05,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:05,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:05,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:05,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:05,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:05,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:05,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:05,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:05,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:05,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:05,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:05,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:05,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:05,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:05,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:05,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:05,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:05,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:05,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:05,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:05,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:05,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:05,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:05,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:05,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:05,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:05,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:05,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:05,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-12 23:59:05,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:05,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:05,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:05,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:05,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:05,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:05,901 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:05,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:05,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:05,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-12 23:59:05,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:05,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:05,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:05,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-12 23:59:05,903 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-12 23:59:05,903 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-12 23:59:05,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:05,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-12 23:59:05,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:05,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:05,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:05,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:05,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:05,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:05,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:05,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:05,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:05,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-12 23:59:05,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:05,906 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_e6c80557-f462-46f3-97b7-88606a9bb335/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 [2021-10-12 23:59:06,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:06,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:06,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:06,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:06,264 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:06,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2021-10-12 23:59:06,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/data/6358f35cc/ac2e6e26196f407ab72e918790140454/FLAG7f27d2283 [2021-10-12 23:59:06,871 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:06,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2021-10-12 23:59:06,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/data/6358f35cc/ac2e6e26196f407ab72e918790140454/FLAG7f27d2283 [2021-10-12 23:59:07,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/data/6358f35cc/ac2e6e26196f407ab72e918790140454 [2021-10-12 23:59:07,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:07,246 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-12 23:59:07,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:07,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:07,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:07,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cba7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07, skipping insertion in model container [2021-10-12 23:59:07,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:07,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:07,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:07,495 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:07,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:07,524 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:07,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07 WrapperNode [2021-10-12 23:59:07,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:07,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:07,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:07,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:07,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:07,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:07,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:07,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:07,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:07,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:07,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:07,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-12 23:59:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2021-10-12 23:59:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-12 23:59:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2021-10-12 23:59:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-12 23:59:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-12 23:59:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-12 23:59:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-12 23:59:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-12 23:59:07,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:07,953 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-12 23:59:07,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:07 BoogieIcfgContainer [2021-10-12 23:59:07,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:07,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:07,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:07,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:07,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:07" (1/3) ... [2021-10-12 23:59:07,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7cdb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:07, skipping insertion in model container [2021-10-12 23:59:07,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (2/3) ... [2021-10-12 23:59:07,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7cdb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:07, skipping insertion in model container [2021-10-12 23:59:07,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:07" (3/3) ... [2021-10-12 23:59:07,966 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2021-10-12 23:59:07,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:07,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-12 23:59:08,045 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:08,052 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 [2021-10-12 23:59:08,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-12 23:59:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-10-12 23:59:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-12 23:59:08,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:08,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:08,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrcatErr0REQUIRES_VIOLATION === [cstrcatErr0REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-12 23:59:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:08,113 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2021-10-12 23:59:08,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:08,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783478627] [2021-10-12 23:59:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:08,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:08,265 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:08,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:08,337 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-12 23:59:08,339 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrcatErr0REQUIRES_VIOLATION [2021-10-12 23:59:08,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr1REQUIRES_VIOLATION [2021-10-12 23:59:08,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr2REQUIRES_VIOLATION [2021-10-12 23:59:08,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr3REQUIRES_VIOLATION [2021-10-12 23:59:08,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr4REQUIRES_VIOLATION [2021-10-12 23:59:08,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr5REQUIRES_VIOLATION [2021-10-12 23:59:08,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-12 23:59:08,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-12 23:59:08,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-12 23:59:08,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:59:08 BoogieIcfgContainer [2021-10-12 23:59:08,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-12 23:59:08,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:08,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:08,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:08,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:07" (3/4) ... [2021-10-12 23:59:08,379 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-12 23:59:08,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-12 23:59:08,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:08,431 INFO L168 Benchmark]: Toolchain (without parser) took 1183.90 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 36.7 MB in the beginning and 69.5 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:08,432 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory is still 52.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:08,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.11 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 36.5 MB in the beginning and 83.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:08,434 INFO L168 Benchmark]: Boogie Preprocessor took 51.48 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 82.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:08,437 INFO L168 Benchmark]: RCFGBuilder took 376.67 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 84.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:08,438 INFO L168 Benchmark]: TraceAbstraction took 415.42 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 71.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:08,439 INFO L168 Benchmark]: Witness Printer took 54.29 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 69.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:08,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory is still 52.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.11 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 36.5 MB in the beginning and 83.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.48 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 82.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 376.67 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 84.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 415.42 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 71.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 54.29 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 69.5 MB in the end (delta: 1.4 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: 5]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] char *s1; [L16] char *s2; [L17] CALL cstrcat(s1, s2) VAL [s1={4:6}, s2={3:5}] [L3] char *s = s1; VAL [s={4:6}, s1={4:6}, s1={4:6}, s2={3:5}, s2={3:5}] [L5] \read(*s) - UnprovableResult [Line: 5]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: 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 all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 322.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 24.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: 23.1ms SsaConstructionTime, 30.4ms 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! [2021-10-12 23:59:08,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c80557-f462-46f3-97b7-88606a9bb335/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...