./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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/ldv-memsafety/ArraysOfVariableLength_-read.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 ae57481434c4d2d83f3418f57c937e0ced919170ca4bdab03ab9b5db6056f353 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 21:06:16,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 21:06:16,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 21:06:17,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 21:06:17,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 21:06:17,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 21:06:17,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 21:06:17,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 21:06:17,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 21:06:17,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 21:06:17,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 21:06:17,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 21:06:17,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 21:06:17,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 21:06:17,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 21:06:17,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 21:06:17,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 21:06:17,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 21:06:17,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 21:06:17,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 21:06:17,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 21:06:17,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 21:06:17,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 21:06:17,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 21:06:17,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 21:06:17,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 21:06:17,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 21:06:17,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 21:06:17,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 21:06:17,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 21:06:17,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 21:06:17,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 21:06:17,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 21:06:17,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 21:06:17,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 21:06:17,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 21:06:17,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 21:06:17,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 21:06:17,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 21:06:17,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 21:06:17,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 21:06:17,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 21:06:17,113 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 21:06:17,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 21:06:17,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 21:06:17,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 21:06:17,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 21:06:17,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 21:06:17,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 21:06:17,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 21:06:17,116 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 21:06:17,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 21:06:17,117 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 21:06:17,117 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 21:06:17,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 21:06:17,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 21:06:17,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 21:06:17,118 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 21:06:17,118 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 21:06:17,118 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 21:06:17,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 21:06:17,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 21:06:17,119 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 21:06:17,119 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 21:06:17,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 21:06:17,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 21:06:17,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 21:06:17,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:06:17,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 21:06:17,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 21:06:17,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 21:06:17,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 21:06:17,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 21:06:17,121 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 21:06:17,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 21:06:17,122 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 21:06:17,122 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae57481434c4d2d83f3418f57c937e0ced919170ca4bdab03ab9b5db6056f353 [2023-02-18 21:06:17,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 21:06:17,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 21:06:17,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 21:06:17,365 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 21:06:17,366 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 21:06:17,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2023-02-18 21:06:18,394 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 21:06:18,547 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 21:06:18,547 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2023-02-18 21:06:18,552 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bfbbddf/a7f2cd9f34e34383b4a220a2e9e87c6e/FLAG4352354fb [2023-02-18 21:06:18,565 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bfbbddf/a7f2cd9f34e34383b4a220a2e9e87c6e [2023-02-18 21:06:18,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 21:06:18,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 21:06:18,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 21:06:18,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 21:06:18,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 21:06:18,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcb8ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18, skipping insertion in model container [2023-02-18 21:06:18,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 21:06:18,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 21:06:18,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:06:18,754 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 21:06:18,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 21:06:18,776 INFO L208 MainTranslator]: Completed translation [2023-02-18 21:06:18,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18 WrapperNode [2023-02-18 21:06:18,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 21:06:18,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 21:06:18,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 21:06:18,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 21:06:18,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,802 INFO L138 Inliner]: procedures = 8, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2023-02-18 21:06:18,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 21:06:18,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 21:06:18,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 21:06:18,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 21:06:18,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 21:06:18,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 21:06:18,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 21:06:18,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 21:06:18,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (1/1) ... [2023-02-18 21:06:18,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 21:06:18,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 21:06:18,851 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) [2023-02-18 21:06:18,865 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 [2023-02-18 21:06:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 21:06:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 21:06:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 21:06:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 21:06:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 21:06:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 21:06:18,932 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 21:06:18,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 21:06:19,058 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 21:06:19,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 21:06:19,064 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 21:06:19,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:06:19 BoogieIcfgContainer [2023-02-18 21:06:19,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 21:06:19,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 21:06:19,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 21:06:19,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 21:06:19,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 09:06:18" (1/3) ... [2023-02-18 21:06:19,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32cb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:06:19, skipping insertion in model container [2023-02-18 21:06:19,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:06:18" (2/3) ... [2023-02-18 21:06:19,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32cb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:06:19, skipping insertion in model container [2023-02-18 21:06:19,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:06:19" (3/3) ... [2023-02-18 21:06:19,074 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2023-02-18 21:06:19,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 21:06:19,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-02-18 21:06:19,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 21:06:19,130 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6fad1d12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 21:06:19,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-02-18 21:06:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 21:06:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 21:06:19,138 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 21:06:19,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 21:06:19,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-02-18 21:06:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 21:06:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2023-02-18 21:06:19,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 21:06:19,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951443978] [2023-02-18 21:06:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 21:06:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 21:06:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 21:06:19,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 21:06:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 21:06:19,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 21:06:19,325 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 21:06:19,326 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2023-02-18 21:06:19,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-02-18 21:06:19,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-02-18 21:06:19,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-02-18 21:06:19,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-02-18 21:06:19,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2023-02-18 21:06:19,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2023-02-18 21:06:19,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-02-18 21:06:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 21:06:19,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-18 21:06:19,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 21:06:19,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 09:06:19 BoogieIcfgContainer [2023-02-18 21:06:19,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 21:06:19,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 21:06:19,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 21:06:19,359 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 21:06:19,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:06:19" (3/4) ... [2023-02-18 21:06:19,361 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 21:06:19,411 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 21:06:19,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 21:06:19,421 INFO L158 Benchmark]: Toolchain (without parser) took 847.69ms. Allocated memory is still 165.7MB. Free memory was 127.7MB in the beginning and 100.2MB in the end (delta: 27.5MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,421 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 21:06:19,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.81ms. Allocated memory is still 165.7MB. Free memory was 127.2MB in the beginning and 130.1MB in the end (delta: -2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.29ms. Allocated memory is still 165.7MB. Free memory was 130.1MB in the beginning and 128.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,422 INFO L158 Benchmark]: Boogie Preprocessor took 16.96ms. Allocated memory is still 165.7MB. Free memory was 128.9MB in the beginning and 127.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,423 INFO L158 Benchmark]: RCFGBuilder took 245.24ms. Allocated memory is still 165.7MB. Free memory was 127.5MB in the beginning and 116.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,423 INFO L158 Benchmark]: TraceAbstraction took 287.99ms. Allocated memory is still 165.7MB. Free memory was 116.0MB in the beginning and 101.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,423 INFO L158 Benchmark]: Witness Printer took 61.31ms. Allocated memory is still 165.7MB. Free memory was 101.8MB in the beginning and 100.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 21:06:19,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.81ms. Allocated memory is still 165.7MB. Free memory was 127.2MB in the beginning and 130.1MB in the end (delta: -2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.29ms. Allocated memory is still 165.7MB. Free memory was 130.1MB in the beginning and 128.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.96ms. Allocated memory is still 165.7MB. Free memory was 128.9MB in the beginning and 127.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.24ms. Allocated memory is still 165.7MB. Free memory was 127.5MB in the beginning and 116.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 287.99ms. Allocated memory is still 165.7MB. Free memory was 116.0MB in the beginning and 101.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 61.31ms. Allocated memory is still 165.7MB. Free memory was 101.8MB in the beginning and 100.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; [L22] i = 0 VAL [b={2:0}, i=0] [L22] COND TRUE i < 100 [L23] CALL foo(i, b, i) [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L14] COND TRUE i < size + 1 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L15] a[i] VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: 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 1 procedures, 30 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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! [2023-02-18 21:06:19,455 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)