./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/cstrcat_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 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 .............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:41:44,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:41:44,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:41:44,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:41:44,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:41:44,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:41:44,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:41:44,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:41:44,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:41:44,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:41:44,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:41:44,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:41:44,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:41:44,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:41:44,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:41:44,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:41:44,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:41:44,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:41:44,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:41:44,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:41:44,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:41:44,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:41:44,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:41:44,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:41:44,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:41:44,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:41:44,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:41:44,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:41:44,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:41:44,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:41:44,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:41:44,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:41:44,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:41:44,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:41:44,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:41:44,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:41:44,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:41:44,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:41:44,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:41:44,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:41:44,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:41:44,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 04:41:44,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:41:44,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:41:44,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:41:44,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:41:44,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:41:44,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:41:44,249 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:41:44,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:41:44,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:41:44,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:41:44,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:41:44,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:41:44,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:41:44,250 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:41:44,250 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:41:44,251 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 04:41:44,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:41:44,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:41:44,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:41:44,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:41:44,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:41:44,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:41:44,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:41:44,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:41:44,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:41:44,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:41:44,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:41:44,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:41:44,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:41:44,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6be6ad7a65db7d2c064e38ccfb241f9d252c5 [2021-08-27 04:41:44,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:41:44,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:41:44,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:41:44,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:41:44,508 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:41:44,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2021-08-27 04:41:44,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cfa0b1de/f60cb1fe9fd943c8bded3f354a7b108e/FLAGba1505a9f [2021-08-27 04:41:44,851 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:41:44,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c [2021-08-27 04:41:44,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cfa0b1de/f60cb1fe9fd943c8bded3f354a7b108e/FLAGba1505a9f [2021-08-27 04:41:45,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cfa0b1de/f60cb1fe9fd943c8bded3f354a7b108e [2021-08-27 04:41:45,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:41:45,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:41:45,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:41:45,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:41:45,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:41:45,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b85ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45, skipping insertion in model container [2021-08-27 04:41:45,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:41:45,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:41:45,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:41:45,418 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:41:45,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:41:45,443 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:41:45,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45 WrapperNode [2021-08-27 04:41:45,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:41:45,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:41:45,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:41:45,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:41:45,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:41:45,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:41:45,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:41:45,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:41:45,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (1/1) ... [2021-08-27 04:41:45,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:41:45,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:41:45,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:41:45,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:41:45,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:41:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:41:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat [2021-08-27 04:41:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:41:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat [2021-08-27 04:41:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:41:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:41:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:41:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:41:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:41:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:41:45,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:41:45,797 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-27 04:41:45,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:45 BoogieIcfgContainer [2021-08-27 04:41:45,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:41:45,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:41:45,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:41:45,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:41:45,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:41:45" (1/3) ... [2021-08-27 04:41:45,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c418f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:41:45, skipping insertion in model container [2021-08-27 04:41:45,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:41:45" (2/3) ... [2021-08-27 04:41:45,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c418f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:41:45, skipping insertion in model container [2021-08-27 04:41:45,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:45" (3/3) ... [2021-08-27 04:41:45,819 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c [2021-08-27 04:41:45,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:41:45,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-27 04:41:45,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:41:45,869 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:41:45,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-27 04:41:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 04:41:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:41:45,883 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:41:45,883 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:41:45,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrcatErr0REQUIRES_VIOLATION === [cstrcatErr0REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr3REQUIRES_VIOLATION (and 3 more)] === [2021-08-27 04:41:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:41:45,887 INFO L82 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times [2021-08-27 04:41:45,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:41:45,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726024638] [2021-08-27 04:41:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:41:45,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:41:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:41:45,947 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 04:41:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:41:45,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 04:41:45,990 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 04:41:45,991 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrcatErr0REQUIRES_VIOLATION [2021-08-27 04:41:45,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr1REQUIRES_VIOLATION [2021-08-27 04:41:45,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr2REQUIRES_VIOLATION [2021-08-27 04:41:45,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr3REQUIRES_VIOLATION [2021-08-27 04:41:45,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr4REQUIRES_VIOLATION [2021-08-27 04:41:45,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr5REQUIRES_VIOLATION [2021-08-27 04:41:45,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:41:45,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:41:46,000 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:41:46,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:41:46 BoogieIcfgContainer [2021-08-27 04:41:46,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:41:46,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:41:46,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:41:46,013 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:41:46,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:41:45" (3/4) ... [2021-08-27 04:41:46,014 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 04:41:46,042 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:41:46,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:41:46,043 INFO L168 Benchmark]: Toolchain (without parser) took 740.31 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 25.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-08-27 04:41:46,044 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:41:46,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.67 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 39.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:41:46,051 INFO L168 Benchmark]: Boogie Preprocessor took 62.62 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 40.1 MB in the end (delta: -155.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:41:46,052 INFO L168 Benchmark]: RCFGBuilder took 289.12 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 26.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:41:46,053 INFO L168 Benchmark]: TraceAbstraction took 196.56 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 26.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:41:46,053 INFO L168 Benchmark]: Witness Printer took 29.65 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 25.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:41:46,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 140.67 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 39.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.62 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 40.1 MB in the end (delta: -155.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 289.12 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 26.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 196.56 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 26.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 29.65 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 25.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 5]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] char *s1; [L16] char *s2; [L17] CALL cstrcat(s1, s2) VAL [s1={4:6}, s2={3:5}] [L3] char *s = s1; VAL [s={4:6}, s1={4:6}, s1={4:6}, s2={3:5}, s2={3:5}] [L5] \read(*s) - UnprovableResult [Line: 5]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 141.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.8ms SsaConstructionTime, 17.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-27 04:41:46,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...