./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 eb692b52 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-?-eb692b5 [2022-07-20 05:51:58,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 05:51:58,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 05:51:58,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 05:51:58,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 05:51:58,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 05:51:58,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 05:51:58,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 05:51:58,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 05:51:58,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 05:51:58,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 05:51:58,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 05:51:58,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 05:51:58,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 05:51:58,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 05:51:58,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 05:51:58,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 05:51:58,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 05:51:58,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 05:51:58,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 05:51:58,790 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 05:51:58,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 05:51:58,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 05:51:58,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 05:51:58,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 05:51:58,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 05:51:58,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 05:51:58,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 05:51:58,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 05:51:58,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 05:51:58,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 05:51:58,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 05:51:58,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 05:51:58,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 05:51:58,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 05:51:58,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 05:51:58,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 05:51:58,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 05:51:58,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 05:51:58,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 05:51:58,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 05:51:58,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 05:51:58,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 05:51:58,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 05:51:58,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 05:51:58,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 05:51:58,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 05:51:58,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 05:51:58,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 05:51:58,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 05:51:58,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 05:51:58,844 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 05:51:58,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 05:51:58,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 05:51:58,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 05:51:58,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 05:51:58,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 05:51:58,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 05:51:58,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 05:51:58,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 05:51:58,848 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 05:51:58,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 05:51:58,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 05:51:58,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 05:51:58,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 05:51:58,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 05:51:58,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 05:51:58,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 05:51:58,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:51:58,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 05:51:58,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 05:51:58,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 05:51:58,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 05:51:58,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae57481434c4d2d83f3418f57c937e0ced919170ca4bdab03ab9b5db6056f353 [2022-07-20 05:51:59,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 05:51:59,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 05:51:59,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 05:51:59,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 05:51:59,071 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 05:51:59,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2022-07-20 05:51:59,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd2a6824/447e0a98e75140dbb852c39947bf7d50/FLAG5b581f66a [2022-07-20 05:51:59,464 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 05:51:59,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2022-07-20 05:51:59,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd2a6824/447e0a98e75140dbb852c39947bf7d50/FLAG5b581f66a [2022-07-20 05:51:59,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd2a6824/447e0a98e75140dbb852c39947bf7d50 [2022-07-20 05:51:59,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 05:51:59,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 05:51:59,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 05:51:59,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 05:51:59,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 05:51:59,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b31faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59, skipping insertion in model container [2022-07-20 05:51:59,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 05:51:59,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:51:59,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:51:59,638 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 05:51:59,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:51:59,659 INFO L208 MainTranslator]: Completed translation [2022-07-20 05:51:59,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59 WrapperNode [2022-07-20 05:51:59,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 05:51:59,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 05:51:59,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 05:51:59,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 05:51:59,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,685 INFO L137 Inliner]: procedures = 8, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-07-20 05:51:59,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 05:51:59,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 05:51:59,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 05:51:59,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 05:51:59,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 05:51:59,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 05:51:59,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 05:51:59,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 05:51:59,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (1/1) ... [2022-07-20 05:51:59,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:51:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 05:51:59,747 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) [2022-07-20 05:51:59,756 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 [2022-07-20 05:51:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 05:51:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 05:51:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 05:51:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 05:51:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 05:51:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 05:51:59,835 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 05:51:59,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 05:52:00,006 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 05:52:00,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 05:52:00,011 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-20 05:52:00,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:52:00 BoogieIcfgContainer [2022-07-20 05:52:00,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 05:52:00,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 05:52:00,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 05:52:00,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 05:52:00,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:51:59" (1/3) ... [2022-07-20 05:52:00,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61275c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:52:00, skipping insertion in model container [2022-07-20 05:52:00,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:51:59" (2/3) ... [2022-07-20 05:52:00,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61275c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:52:00, skipping insertion in model container [2022-07-20 05:52:00,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:52:00" (3/3) ... [2022-07-20 05:52:00,035 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2022-07-20 05:52:00,048 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 05:52:00,048 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-20 05:52:00,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 05:52:00,091 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=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33190f9e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@123f6d64 [2022-07-20 05:52:00,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-20 05:52:00,096 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) [2022-07-20 05:52:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 05:52:00,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:52:00,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 05:52:00,104 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)] === [2022-07-20 05:52:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:52:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2022-07-20 05:52:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 05:52:00,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840355518] [2022-07-20 05:52:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:52:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 05:52:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 05:52:00,235 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 05:52:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 05:52:00,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-20 05:52:00,270 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 05:52:00,272 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (7 of 8 remaining) [2022-07-20 05:52:00,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-07-20 05:52:00,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-07-20 05:52:00,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-07-20 05:52:00,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-07-20 05:52:00,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2022-07-20 05:52:00,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2022-07-20 05:52:00,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2022-07-20 05:52:00,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 05:52:00,283 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-20 05:52:00,287 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 05:52:00,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:52:00 BoogieIcfgContainer [2022-07-20 05:52:00,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 05:52:00,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 05:52:00,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 05:52:00,313 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 05:52:00,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:52:00" (3/4) ... [2022-07-20 05:52:00,316 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-20 05:52:00,360 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 05:52:00,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 05:52:00,364 INFO L158 Benchmark]: Toolchain (without parser) took 880.80ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.3MB in the beginning and 80.9MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:52:00,367 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:52:00,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.34ms. Allocated memory is still 90.2MB. Free memory was 58.2MB in the beginning and 67.2MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 05:52:00,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.09ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 65.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 05:52:00,368 INFO L158 Benchmark]: Boogie Preprocessor took 18.18ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 64.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:52:00,368 INFO L158 Benchmark]: RCFGBuilder took 323.13ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 54.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-20 05:52:00,369 INFO L158 Benchmark]: TraceAbstraction took 281.03ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 83.0MB in the end (delta: -29.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:52:00,371 INFO L158 Benchmark]: Witness Printer took 48.07ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 80.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 05:52:00,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.34ms. Allocated memory is still 90.2MB. Free memory was 58.2MB in the beginning and 67.2MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.09ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 65.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.18ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 64.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 323.13ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 54.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 281.03ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 83.0MB in the end (delta: -29.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.07ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 80.9MB in the end (delta: 2.0MB). 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! [2022-07-20 05:52:00,412 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)