./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.0-5485861 [2020-10-26 03:24:25,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:24:25,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:24:25,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:24:25,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:24:25,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:24:25,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:24:25,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:24:25,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:24:25,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:24:25,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:24:25,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:24:25,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:24:25,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:24:25,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:24:25,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:24:25,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:24:25,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:24:25,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:24:25,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:24:25,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:24:25,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:24:25,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:24:25,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:24:25,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:24:25,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:24:25,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:24:25,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:24:25,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:24:25,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:24:25,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:24:25,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:24:25,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:24:25,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:24:25,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:24:25,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:24:25,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:24:25,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:24:25,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:24:25,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:24:25,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:24:25,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:24:25,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:24:25,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:24:25,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:24:25,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:24:25,318 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:24:25,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:24:25,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:24:25,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:24:25,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:24:25,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:24:25,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:24:25,321 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:24:25,321 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:24:25,322 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:24:25,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:24:25,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:24:25,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:24:25,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:24:25,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:24:25,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:24:25,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:24:25,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:24:25,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:24:25,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:24:25,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:24:25,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:24:25,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:24:25,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:24:25,327 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25bb35238109f4fc42bc09877cec45401fedd3ae [2020-10-26 03:24:25,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:24:25,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:24:25,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:24:25,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:24:25,770 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:24:25,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-10-26 03:24:25,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452a7b215/4b0c31e8dfb24330aecc67648da826b1/FLAGa53a54ac5 [2020-10-26 03:24:26,584 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:24:26,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-10-26 03:24:26,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452a7b215/4b0c31e8dfb24330aecc67648da826b1/FLAGa53a54ac5 [2020-10-26 03:24:26,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452a7b215/4b0c31e8dfb24330aecc67648da826b1 [2020-10-26 03:24:26,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:24:26,968 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:24:26,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:24:26,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:24:26,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:24:26,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:24:26" (1/1) ... [2020-10-26 03:24:26,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc6dd51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:26, skipping insertion in model container [2020-10-26 03:24:26,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:24:26" (1/1) ... [2020-10-26 03:24:27,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:24:27,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:24:27,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:24:27,222 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:24:27,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:24:27,255 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:24:27,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27 WrapperNode [2020-10-26 03:24:27,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:24:27,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:24:27,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:24:27,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:24:27,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... [2020-10-26 03:24:27,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:24:27,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:24:27,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:24:27,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:24:27,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 03:24:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:24:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:24:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2020-10-26 03:24:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:24:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:24:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2020-10-26 03:24:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:24:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:24:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:24:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:24:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:24:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:24:27,689 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:24:27,689 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:24:27,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:24:27 BoogieIcfgContainer [2020-10-26 03:24:27,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:24:27,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:24:27,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:24:27,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:24:27,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:24:26" (1/3) ... [2020-10-26 03:24:27,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a8bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:24:27, skipping insertion in model container [2020-10-26 03:24:27,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:27" (2/3) ... [2020-10-26 03:24:27,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a8bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:24:27, skipping insertion in model container [2020-10-26 03:24:27,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:24:27" (3/3) ... [2020-10-26 03:24:27,703 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2020-10-26 03:24:27,716 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:24:27,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-26 03:24:27,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-26 03:24:27,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:24:27,777 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:24:27,777 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:24:27,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:24:27,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:24:27,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:24:27,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:24:27,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:24:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-26 03:24:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 03:24:27,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:27,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:27,819 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]=== [2020-10-26 03:24:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2020-10-26 03:24:27,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:27,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235480961] [2020-10-26 03:24:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:24:27,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:24:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:24:27,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:24:28,015 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:24:28,016 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:24:28,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:24:28,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:24:28 BoogieIcfgContainer [2020-10-26 03:24:28,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:24:28,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:24:28,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:24:28,044 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:24:28,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:24:27" (3/4) ... [2020-10-26 03:24:28,047 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:24:28,091 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:24:28,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:24:28,095 INFO L168 Benchmark]: Toolchain (without parser) took 1129.87 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 34.6 MB in the end (delta: -11.4 MB). Peak memory consumption was 983.3 kB. Max. memory is 16.1 GB. [2020-10-26 03:24:28,096 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 46.1 MB. Free memory is still 25.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:24:28,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.65 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.6 MB in the beginning and 33.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:28,098 INFO L168 Benchmark]: Boogie Preprocessor took 38.36 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 31.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:24:28,103 INFO L168 Benchmark]: RCFGBuilder took 395.44 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 32.0 MB in the end (delta: -121.9 kB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:28,104 INFO L168 Benchmark]: TraceAbstraction took 348.94 ms. Allocated memory is still 56.6 MB. Free memory was 31.5 MB in the beginning and 36.4 MB in the end (delta: -4.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:24:28,105 INFO L168 Benchmark]: Witness Printer took 48.29 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 34.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:28,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 46.1 MB. Free memory is still 25.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.65 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.6 MB in the beginning and 33.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.36 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 31.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 395.44 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 32.0 MB in the end (delta: -121.9 kB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 348.94 ms. Allocated memory is still 56.6 MB. Free memory was 31.5 MB in the beginning and 36.4 MB in the end (delta: -4.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 48.29 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 34.6 MB in the end (delta: 1.5 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...