./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/cstrncpy_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 41f0468d692f5518317d4661ccff168131d2a4eb ..................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 20:04:41,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:04:41,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:04:41,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:04:41,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:04:41,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:04:41,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:04:41,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:04:41,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:04:41,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:04:41,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:04:41,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:04:41,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:04:41,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:04:41,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:04:41,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:04:41,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:04:41,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:04:41,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:04:41,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:04:41,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:04:41,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:04:41,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:04:41,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:04:41,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:04:41,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:04:41,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:04:41,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:04:41,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:04:41,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:04:41,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:04:41,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:04:41,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:04:41,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:04:41,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:04:41,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:04:41,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:04:41,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:04:41,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:04:41,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:04:41,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:04:41,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:04:41,905 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:04:41,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:04:41,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:04:41,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:04:41,908 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:04:41,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:04:41,908 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:04:41,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:04:41,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:04:41,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:04:41,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:04:41,909 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:04:41,910 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:04:41,910 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:04:41,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:04:41,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:04:41,911 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:04:41,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:04:41,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:04:41,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:04:41,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:04:41,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:04:41,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:41,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:04:41,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:04:41,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:04:41,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:04:41,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:04:41,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 41f0468d692f5518317d4661ccff168131d2a4eb [2019-11-28 20:04:42,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:04:42,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:04:42,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:04:42,228 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:04:42,228 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:04:42,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2019-11-28 20:04:42,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3c3b6cb/4c2eec055aee422db231254393843e9c/FLAGbc993f934 [2019-11-28 20:04:42,768 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:04:42,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2019-11-28 20:04:42,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3c3b6cb/4c2eec055aee422db231254393843e9c/FLAGbc993f934 [2019-11-28 20:04:43,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3c3b6cb/4c2eec055aee422db231254393843e9c [2019-11-28 20:04:43,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:04:43,150 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:04:43,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:43,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:04:43,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:04:43,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f97558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43, skipping insertion in model container [2019-11-28 20:04:43,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:04:43,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:04:43,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:43,408 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:04:43,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:43,439 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:04:43,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43 WrapperNode [2019-11-28 20:04:43,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:43,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:04:43,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:04:43,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:04:43,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (1/1) ... [2019-11-28 20:04:43,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:04:43,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:04:43,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:04:43,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:04:43,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (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 [2019-11-28 20:04:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:04:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:04:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2019-11-28 20:04:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:04:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:04:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2019-11-28 20:04:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:04:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:04:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:04:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:04:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:04:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:04:43,866 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:04:43,866 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 20:04:43,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:43 BoogieIcfgContainer [2019-11-28 20:04:43,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:04:43,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:04:43,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:04:43,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:04:43,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:04:43" (1/3) ... [2019-11-28 20:04:43,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80c335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:43, skipping insertion in model container [2019-11-28 20:04:43,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:43" (2/3) ... [2019-11-28 20:04:43,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80c335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:43, skipping insertion in model container [2019-11-28 20:04:43,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:43" (3/3) ... [2019-11-28 20:04:43,881 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2019-11-28 20:04:43,891 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:04:43,898 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 20:04:43,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 20:04:43,930 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:04:43,930 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:04:43,930 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:04:43,931 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:04:43,931 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:04:43,931 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:04:43,931 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:04:43,932 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:04:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-28 20:04:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:04:43,953 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:43,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:43,954 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr5REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:43,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2019-11-28 20:04:43,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:43,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670704543] [2019-11-28 20:04:43,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:04:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:04:44,115 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:04:44,116 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:04:44,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:04:44 BoogieIcfgContainer [2019-11-28 20:04:44,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:04:44,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:04:44,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:04:44,139 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:04:44,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:43" (3/4) ... [2019-11-28 20:04:44,142 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:04:44,186 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:04:44,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:04:44,189 INFO L168 Benchmark]: Toolchain (without parser) took 1038.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:04:44,190 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:04:44,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.59 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:44,192 INFO L168 Benchmark]: Boogie Preprocessor took 95.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:44,193 INFO L168 Benchmark]: RCFGBuilder took 336.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:44,194 INFO L168 Benchmark]: TraceAbstraction took 265.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:04:44,195 INFO L168 Benchmark]: Witness Printer took 48.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:04:44,203 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 288.59 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 95.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 336.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 265.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] char *s1; [L28] char *s2; [L29] int n = __VERIFIER_nondet_int(); [L30] CALL cstrncpy(s1, s2, n) VAL [\old(n)=1, s1={5:-2}, s2={4:-1}] [L5] char *dst = s1; [L6] const char *src = s2; [L7] char *us; [L8] int n2; VAL [\old(n)=1, dst={5:-2}, n=1, s1={5:-2}, s1={5:-2}, s2={4:-1}, s2={4:-1}, src={4:-1}] [L10] COND TRUE n > 0 [L11] n-- [L12] dst++ [L12] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 7 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 10 NumberOfCodeBlocks, 10 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...