./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.2.0-a4ecdab [2020-11-30 00:43:27,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:27,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:27,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:27,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:27,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:27,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:27,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:27,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:27,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:27,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:27,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:27,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:27,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:27,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:27,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:27,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:27,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:27,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:27,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:27,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:27,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:27,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:27,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:27,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:27,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:27,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:27,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:27,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:27,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:27,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:27,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:27,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:27,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:27,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:27,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:27,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:27,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:27,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:27,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:27,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:27,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:43:27,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:27,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:27,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:27,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:27,331 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:27,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:27,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:27,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:43:27,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:43:27,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:27,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:27,335 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:43:27,335 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:43:27,335 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:43:27,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:27,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:43:27,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:27,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:27,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:27,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:27,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:27,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:27,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:27,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:27,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:27,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:43:27,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:43:27,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:27,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 [2020-11-30 00:43:27,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:27,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:27,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:27,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:27,741 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:27,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2020-11-30 00:43:27,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/data/12bbd8566/c81d468a52f54e03b4bc5dfb5fc329e2/FLAG6f7bca368 [2020-11-30 00:43:28,469 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:28,470 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2020-11-30 00:43:28,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/data/12bbd8566/c81d468a52f54e03b4bc5dfb5fc329e2/FLAG6f7bca368 [2020-11-30 00:43:28,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/data/12bbd8566/c81d468a52f54e03b4bc5dfb5fc329e2 [2020-11-30 00:43:28,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:28,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:43:28,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:28,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:28,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:28,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:28" (1/1) ... [2020-11-30 00:43:28,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe194d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:28, skipping insertion in model container [2020-11-30 00:43:28,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:28" (1/1) ... [2020-11-30 00:43:28,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:28,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:29,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:29,077 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:29,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:29,124 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:29,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29 WrapperNode [2020-11-30 00:43:29,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:29,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:29,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:29,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:29,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... [2020-11-30 00:43:29,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:29,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:29,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:29,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:29,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:29,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:43:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2020-11-30 00:43:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:43:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2020-11-30 00:43:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:43:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:43:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:43:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:43:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:43:29,548 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:29,548 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-30 00:43:29,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:29 BoogieIcfgContainer [2020-11-30 00:43:29,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:29,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:29,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:29,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:29,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:28" (1/3) ... [2020-11-30 00:43:29,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7550bf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:29, skipping insertion in model container [2020-11-30 00:43:29,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:29" (2/3) ... [2020-11-30 00:43:29,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7550bf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:29, skipping insertion in model container [2020-11-30 00:43:29,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:29" (3/3) ... [2020-11-30 00:43:29,561 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2020-11-30 00:43:29,572 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:29,577 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 00:43:29,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 00:43:29,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:29,615 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:43:29,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:29,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:29,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:29,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:29,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:29,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:43:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:43:29,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:29,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:29,640 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr3REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr4REQUIRES_VIOLATION, cstrcatErr0REQUIRES_VIOLATION, cstrcatErr5REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 00:43:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:29,646 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2020-11-30 00:43:29,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:29,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170904445] [2020-11-30 00:43:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:29,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:29,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:29,777 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:43:29,778 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:43:29,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:43:29,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:43:29 BoogieIcfgContainer [2020-11-30 00:43:29,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:43:29,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:43:29,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:43:29,800 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:43:29,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:29" (3/4) ... [2020-11-30 00:43:29,802 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:43:29,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08a4cd13-aa76-432b-bb58-552199503d42/bin/uautomizer/witness.graphml [2020-11-30 00:43:29,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:43:29,840 INFO L168 Benchmark]: Toolchain (without parser) took 952.39 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 54.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:29,841 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 104.9 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:29,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.52 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 82.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:29,843 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 80.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:29,844 INFO L168 Benchmark]: RCFGBuilder took 389.61 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 67.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:29,845 INFO L168 Benchmark]: TraceAbstraction took 246.47 ms. Allocated memory is still 104.9 MB. Free memory was 67.5 MB in the beginning and 56.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:29,846 INFO L168 Benchmark]: Witness Printer took 38.55 ms. Allocated memory is still 104.9 MB. Free memory was 56.2 MB in the beginning and 54.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:29,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 104.9 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.52 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 82.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 80.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.61 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 67.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 246.47 ms. Allocated memory is still 104.9 MB. Free memory was 67.5 MB in the beginning and 56.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 38.55 ms. Allocated memory is still 104.9 MB. Free memory was 56.2 MB in the beginning and 54.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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={6:5}, s2={8:4}] [L3] char *s = s1; VAL [s={6:5}, s1={6:5}, s1={6:5}, s2={8:4}, s2={8:4}] [L5] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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! Received shutdown request...