/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:48:54,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:48:54,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:48:54,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:48:54,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:48:54,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:48:54,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:48:54,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:48:54,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:48:54,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:48:54,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:48:54,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:48:54,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:48:54,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:48:54,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:48:54,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:48:54,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:48:54,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:48:54,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:48:54,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:48:54,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:48:54,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:48:54,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:48:54,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:48:54,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 16:48:54,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 16:48:54,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 16:48:54,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 16:48:54,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 16:48:54,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 16:48:54,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:48:54,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:48:54,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:48:54,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:48:54,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:48:54,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:48:54,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:48:54,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:48:54,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:48:54,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:48:54,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:48:54,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:48:54,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:48:54,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:48:54,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:48:54,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:48:54,631 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:48:54,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:48:54,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:48:54,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:48:54,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:48:54,632 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:48:54,632 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:48:54,632 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:48:54,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:48:54,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:48:54,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:48:54,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:48:54,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:48:54,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:48:54,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:54,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:48:54,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:48:54,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:48:54,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:48:54,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:48:54,635 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:48:54,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:48:55,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:48:55,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:48:55,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:48:55,031 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:48:55,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-12-23 16:48:55,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b11fd70be/f4881e113a454eecacc349b8dcf5f3c4/FLAG5be47cf35 [2020-12-23 16:48:55,861 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:48:55,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2020-12-23 16:48:55,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b11fd70be/f4881e113a454eecacc349b8dcf5f3c4/FLAG5be47cf35 [2020-12-23 16:48:56,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b11fd70be/f4881e113a454eecacc349b8dcf5f3c4 [2020-12-23 16:48:56,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:48:56,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:48:56,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:56,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:48:56,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:48:56,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d6568a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56, skipping insertion in model container [2020-12-23 16:48:56,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:48:56,282 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: IdentifierExpression[~s~0,] left hand side expression in assignment: address: IdentifierExpression[~s~0,] [2020-12-23 16:48:56,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:56,454 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: IdentifierExpression[~s~0,] left hand side expression in assignment: address: IdentifierExpression[~s~0,] [2020-12-23 16:48:56,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:56,487 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:48:56,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56 WrapperNode [2020-12-23 16:48:56,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:56,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:56,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:48:56,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:48:56,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:56,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:48:56,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:48:56,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:48:56,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:48:56,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:48:56,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:48:56,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:48:56,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 16:48:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:48:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:48:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:48:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:48:57,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:48:57,072 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 16:48:57,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:57 BoogieIcfgContainer [2020-12-23 16:48:57,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:48:57,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:48:57,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:48:57,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:48:57,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:48:56" (1/3) ... [2020-12-23 16:48:57,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750e093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:57, skipping insertion in model container [2020-12-23 16:48:57,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56" (2/3) ... [2020-12-23 16:48:57,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750e093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:57, skipping insertion in model container [2020-12-23 16:48:57,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:57" (3/3) ... [2020-12-23 16:48:57,098 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2020-12-23 16:48:57,116 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:48:57,129 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 16:48:57,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 16:48:57,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:48:57,216 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:48:57,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:48:57,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:48:57,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:48:57,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:48:57,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:48:57,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:48:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-23 16:48:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:48:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:57,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:48:57,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:48:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2020-12-23 16:48:57,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:57,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787557563] [2020-12-23 16:48:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:48:57,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:48:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:48:57,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:48:57,486 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 16:48:57,487 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 16:48:57,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:48:57,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:48:57 BoogieIcfgContainer [2020-12-23 16:48:57,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:48:57,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:48:57,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:48:57,517 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:48:57,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:57" (3/4) ... [2020-12-23 16:48:57,521 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 16:48:57,595 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe.c-witness.graphml [2020-12-23 16:48:57,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:48:57,598 INFO L168 Benchmark]: Toolchain (without parser) took 1359.57 ms. Allocated memory is still 159.4 MB. Free memory was 134.5 MB in the beginning and 131.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:48:57,600 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory was 130.6 MB in the beginning and 130.4 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:48:57,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.37 ms. Allocated memory is still 159.4 MB. Free memory was 134.3 MB in the beginning and 125.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 16:48:57,604 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.85 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 123.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:48:57,609 INFO L168 Benchmark]: Boogie Preprocessor took 28.26 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:48:57,611 INFO L168 Benchmark]: RCFGBuilder took 518.88 ms. Allocated memory is still 159.4 MB. Free memory was 122.5 MB in the beginning and 107.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 16:48:57,612 INFO L168 Benchmark]: TraceAbstraction took 431.89 ms. Allocated memory is still 159.4 MB. Free memory was 106.8 MB in the beginning and 133.2 MB in the end (delta: -26.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:48:57,614 INFO L168 Benchmark]: Witness Printer took 78.31 ms. Allocated memory is still 159.4 MB. Free memory was 133.2 MB in the beginning and 131.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:48:57,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory was 130.6 MB in the beginning and 130.4 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.37 ms. Allocated memory is still 159.4 MB. Free memory was 134.3 MB in the beginning and 125.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.85 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 123.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.26 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 518.88 ms. Allocated memory is still 159.4 MB. Free memory was 122.5 MB in the beginning and 107.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 431.89 ms. Allocated memory is still 159.4 MB. Free memory was 106.8 MB in the beginning and 133.2 MB in the end (delta: -26.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 78.31 ms. Allocated memory is still 159.4 MB. Free memory was 133.2 MB in the beginning and 131.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 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(); [L5] char *s = s1; [L7] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 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=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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...