./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/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 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 0.2.0-a4ecdab [2020-11-28 03:06:20,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:06:20,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:06:20,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:06:20,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:06:20,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:06:20,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:06:20,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:06:20,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:06:20,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:06:20,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:06:20,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:06:20,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:06:20,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:06:20,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:06:20,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:06:20,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:06:20,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:06:20,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:06:20,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:06:20,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:06:20,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:06:20,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:06:20,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:06:20,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:06:20,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:06:20,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:06:20,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:06:20,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:06:20,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:06:20,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:06:20,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:06:20,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:06:20,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:06:20,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:06:20,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:06:20,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:06:20,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:06:20,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:06:20,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:06:20,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:06:20,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:06:20,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:06:20,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:06:20,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:06:20,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:06:20,442 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:06:20,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:06:20,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:06:20,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:06:20,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:06:20,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:06:20,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:06:20,445 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:06:20,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:06:20,446 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:06:20,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:06:20,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:06:20,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:06:20,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:06:20,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:06:20,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:06:20,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:06:20,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:06:20,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:20,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:06:20,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:06:20,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:06:20,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:06:20,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:06:20,450 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_218016e4-10a8-4e0d-b056-91a55086a3b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25bb35238109f4fc42bc09877cec45401fedd3ae [2020-11-28 03:06:20,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:06:20,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:06:20,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:06:20,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:06:20,831 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:06:20,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-11-28 03:06:20,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/data/c6c7bbb16/6a7c9b13236845a383c135d42ad7d3dd/FLAGbbc403edd [2020-11-28 03:06:21,563 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:06:21,564 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-11-28 03:06:21,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/data/c6c7bbb16/6a7c9b13236845a383c135d42ad7d3dd/FLAGbbc403edd [2020-11-28 03:06:21,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/data/c6c7bbb16/6a7c9b13236845a383c135d42ad7d3dd [2020-11-28 03:06:21,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:06:21,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:06:21,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:21,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:06:21,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:06:21,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:21" (1/1) ... [2020-11-28 03:06:21,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49dde03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:21, skipping insertion in model container [2020-11-28 03:06:21,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:21" (1/1) ... [2020-11-28 03:06:21,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:06:21,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:06:22,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:22,201 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:06:22,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:22,233 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:06:22,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22 WrapperNode [2020-11-28 03:06:22,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:22,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:06:22,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:06:22,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:06:22,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:06:22,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:06:22,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:06:22,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:06:22,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/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 [2020-11-28 03:06:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:06:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:06:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2020-11-28 03:06:22,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:06:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:06:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2020-11-28 03:06:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:06:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:06:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:06:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:06:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:06:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:06:22,884 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:06:22,885 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:06:22,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:22 BoogieIcfgContainer [2020-11-28 03:06:22,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:06:22,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:06:22,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:06:22,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:06:22,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:06:21" (1/3) ... [2020-11-28 03:06:22,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3073c46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:22, skipping insertion in model container [2020-11-28 03:06:22,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (2/3) ... [2020-11-28 03:06:22,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3073c46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:22, skipping insertion in model container [2020-11-28 03:06:22,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:22" (3/3) ... [2020-11-28 03:06:22,897 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2020-11-28 03:06:22,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:06:22,916 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-28 03:06:22,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-28 03:06:22,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:06:22,954 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:06:22,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:06:22,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:06:22,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:06:22,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:06:22,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:06:22,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:06:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 03:06:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:06:22,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:22,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:22,998 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION]=== [2020-11-28 03:06:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2020-11-28 03:06:23,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:23,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764755791] [2020-11-28 03:06:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:06:23,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:06:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:06:23,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:06:23,199 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:06:23,200 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:06:23,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:06:23,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:06:23 BoogieIcfgContainer [2020-11-28 03:06:23,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:06:23,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:06:23,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:06:23,233 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:06:23,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:22" (3/4) ... [2020-11-28 03:06:23,236 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:06:23,306 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_218016e4-10a8-4e0d-b056-91a55086a3b0/bin/uautomizer/witness.graphml [2020-11-28 03:06:23,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:06:23,309 INFO L168 Benchmark]: Toolchain (without parser) took 1363.03 ms. Allocated memory is still 115.3 MB. Free memory was 87.2 MB in the beginning and 63.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:23,315 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 81.8 MB. Free memory was 39.8 MB in the beginning and 39.7 MB in the end (delta: 42.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:23,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.02 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 93.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:23,317 INFO L168 Benchmark]: Boogie Preprocessor took 39.96 ms. Allocated memory is still 115.3 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:23,318 INFO L168 Benchmark]: RCFGBuilder took 609.95 ms. Allocated memory is still 115.3 MB. Free memory was 91.8 MB in the beginning and 76.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:23,319 INFO L168 Benchmark]: TraceAbstraction took 342.16 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 64.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:23,320 INFO L168 Benchmark]: Witness Printer took 74.65 ms. Allocated memory is still 115.3 MB. Free memory was 64.4 MB in the beginning and 63.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:23,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 81.8 MB. Free memory was 39.8 MB in the beginning and 39.7 MB in the end (delta: 42.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.02 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 93.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.96 ms. Allocated memory is still 115.3 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 609.95 ms. Allocated memory is still 115.3 MB. Free memory was 91.8 MB in the beginning and 76.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 342.16 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 64.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 74.65 ms. Allocated memory is still 115.3 MB. Free memory was 64.4 MB in the beginning and 63.0 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: - 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={4:5}, s2={7:2}] [L5] char *s = s1; VAL [\old(n)=0, n=0, s={4:5}, s1={4:5}, s1={4:5}, s2={7:2}, s2={7:2}] [L7] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=38occurred 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...