./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 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/termination-recursive-malloc/chunk1-2.i -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 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:12:21,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:12:21,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:12:21,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:12:21,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:12:21,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:12:21,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:12:21,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:12:21,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:12:21,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:12:21,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:12:21,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:12:21,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:12:21,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:12:21,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:12:21,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:12:21,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:12:21,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:12:21,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:12:21,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:12:21,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:12:21,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:12:21,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:12:21,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:12:21,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:12:21,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:12:21,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:12:21,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:12:21,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:12:21,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:12:21,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:12:21,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:12:21,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:12:21,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:12:21,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:12:21,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:12:21,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:12:21,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:12:21,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:12:21,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:12:21,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:12:21,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 22:12:21,853 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:12:21,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:12:21,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:12:21,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:12:21,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:12:21,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:12:21,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:12:21,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:12:21,856 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:12:21,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:12:21,856 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:12:21,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:12:21,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:12:21,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:12:21,858 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:12:21,858 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:12:21,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:12:21,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:12:21,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:12:21,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:12:21,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:12:21,859 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:12:21,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-02-15 22:12:22,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:12:22,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:12:22,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:12:22,073 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:12:22,073 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:12:22,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-02-15 22:12:23,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:12:23,195 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:12:23,195 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-02-15 22:12:23,198 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669e2f7f5/5c9ad3928e7a4c978bce4ee48e1426ba/FLAG16dc0539a [2023-02-15 22:12:23,207 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669e2f7f5/5c9ad3928e7a4c978bce4ee48e1426ba [2023-02-15 22:12:23,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:12:23,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:12:23,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:12:23,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:12:23,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:12:23,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec878e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23, skipping insertion in model container [2023-02-15 22:12:23,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:12:23,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:12:23,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:12:23,323 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:12:23,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:12:23,339 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:12:23,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23 WrapperNode [2023-02-15 22:12:23,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:12:23,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:12:23,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:12:23,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:12:23,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,359 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-02-15 22:12:23,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:12:23,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:12:23,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:12:23,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:12:23,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:12:23,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:12:23,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:12:23,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:12:23,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (1/1) ... [2023-02-15 22:12:23,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:12:23,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:12:23,399 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) [2023-02-15 22:12:23,405 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 [2023-02-15 22:12:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 22:12:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:12:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-02-15 22:12:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-02-15 22:12:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:12:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:12:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 22:12:23,475 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:12:23,477 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:12:23,621 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:12:23,625 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:12:23,625 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 22:12:23,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:12:23 BoogieIcfgContainer [2023-02-15 22:12:23,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:12:23,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:12:23,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:12:23,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:12:23,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:12:23" (1/3) ... [2023-02-15 22:12:23,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ed9f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:12:23, skipping insertion in model container [2023-02-15 22:12:23,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:23" (2/3) ... [2023-02-15 22:12:23,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ed9f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:12:23, skipping insertion in model container [2023-02-15 22:12:23,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:12:23" (3/3) ... [2023-02-15 22:12:23,632 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-02-15 22:12:23,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:12:23,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 22:12:23,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:12:23,693 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;@4b1de24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:12:23,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 22:12:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 22:12:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-15 22:12:23,699 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:12:23,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-15 22:12:23,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 22:12:23,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:12:23,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2023-02-15 22:12:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:12:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487523663] [2023-02-15 22:12:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:12:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:12:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 22:12:23,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 22:12:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 22:12:23,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 22:12:23,785 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 22:12:23,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-02-15 22:12:23,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-02-15 22:12:23,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-02-15 22:12:23,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-02-15 22:12:23,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-02-15 22:12:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-02-15 22:12:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-02-15 22:12:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-02-15 22:12:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-02-15 22:12:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-02-15 22:12:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-02-15 22:12:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-02-15 22:12:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-02-15 22:12:23,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 22:12:23,805 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-15 22:12:23,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 22:12:23,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:12:23 BoogieIcfgContainer [2023-02-15 22:12:23,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 22:12:23,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 22:12:23,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 22:12:23,825 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 22:12:23,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:12:23" (3/4) ... [2023-02-15 22:12:23,838 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 22:12:23,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 22:12:23,839 INFO L158 Benchmark]: Toolchain (without parser) took 629.24ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 99.1MB in the beginning and 145.9MB in the end (delta: -46.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:12:23,839 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 98.6MB. Free memory was 47.1MB in the beginning and 47.0MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:12:23,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 129.75ms. Allocated memory is still 144.7MB. Free memory was 99.1MB in the beginning and 89.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 22:12:23,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.76ms. Allocated memory is still 144.7MB. Free memory was 89.5MB in the beginning and 86.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 22:12:23,840 INFO L158 Benchmark]: Boogie Preprocessor took 12.56ms. Allocated memory is still 144.7MB. Free memory was 86.9MB in the beginning and 85.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:12:23,841 INFO L158 Benchmark]: RCFGBuilder took 253.54ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 74.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 22:12:23,842 INFO L158 Benchmark]: TraceAbstraction took 195.17ms. Allocated memory is still 144.7MB. Free memory was 73.9MB in the beginning and 114.0MB in the end (delta: -40.1MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-02-15 22:12:23,843 INFO L158 Benchmark]: Witness Printer took 13.78ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 114.0MB in the beginning and 145.9MB in the end (delta: -32.0MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2023-02-15 22:12:23,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 98.6MB. Free memory was 47.1MB in the beginning and 47.0MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 129.75ms. Allocated memory is still 144.7MB. Free memory was 99.1MB in the beginning and 89.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.76ms. Allocated memory is still 144.7MB. Free memory was 89.5MB in the beginning and 86.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.56ms. Allocated memory is still 144.7MB. Free memory was 86.9MB in the beginning and 85.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 253.54ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 74.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 195.17ms. Allocated memory is still 144.7MB. Free memory was 73.9MB in the beginning and 114.0MB in the end (delta: -40.1MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Witness Printer took 13.78ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 114.0MB in the beginning and 145.9MB in the end (delta: -32.0MB). Peak memory consumption was 4.5MB. 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 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={-1:0}, i=0, upper=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: -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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, 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=33occurred 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, 4 NumberOfCodeBlocks, 4 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 could not prove your program: unable to determine feasibility of some traces [2023-02-15 22:12:23,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/termination-recursive-malloc/chunk1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:12:25,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:12:25,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:12:25,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:12:25,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:12:25,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:12:25,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:12:25,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:12:25,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:12:25,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:12:25,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:12:25,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:12:25,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:12:25,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:12:25,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:12:25,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:12:25,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:12:25,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:12:25,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:12:25,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:12:25,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:12:25,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:12:25,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:12:25,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:12:25,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:12:25,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:12:25,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:12:25,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:12:25,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:12:25,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:12:25,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:12:25,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:12:25,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:12:25,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:12:25,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:12:25,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:12:25,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:12:25,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:12:25,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:12:25,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:12:25,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:12:25,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 22:12:25,680 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:12:25,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:12:25,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:12:25,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:12:25,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:12:25,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:12:25,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:12:25,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:12:25,682 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:12:25,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:12:25,683 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:12:25,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:12:25,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:12:25,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:12:25,685 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 22:12:25,685 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 22:12:25,685 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:12:25,685 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:12:25,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:12:25,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:12:25,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:12:25,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:12:25,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:12:25,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:12:25,686 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 22:12:25,686 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 22:12:25,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:12:25,687 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:12:25,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:12:25,687 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 22:12:25,687 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:12:25,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-02-15 22:12:25,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:12:25,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:12:25,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:12:25,919 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:12:25,919 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:12:25,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-02-15 22:12:26,902 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:12:27,085 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:12:27,086 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-02-15 22:12:27,089 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2185609/434b3540c94f4d1486a7c5c92bfc8160/FLAG9b64d401f [2023-02-15 22:12:27,106 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2185609/434b3540c94f4d1486a7c5c92bfc8160 [2023-02-15 22:12:27,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:12:27,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:12:27,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:12:27,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:12:27,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:12:27,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43948b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27, skipping insertion in model container [2023-02-15 22:12:27,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:12:27,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:12:27,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:12:27,258 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:12:27,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:12:27,280 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:12:27,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27 WrapperNode [2023-02-15 22:12:27,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:12:27,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:12:27,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:12:27,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:12:27,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,303 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-02-15 22:12:27,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:12:27,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:12:27,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:12:27,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:12:27,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:12:27,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:12:27,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:12:27,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:12:27,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (1/1) ... [2023-02-15 22:12:27,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:12:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:12:27,365 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) [2023-02-15 22:12:27,381 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 [2023-02-15 22:12:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:12:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 22:12:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-02-15 22:12:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-02-15 22:12:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:12:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:12:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 22:12:27,449 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:12:27,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:12:27,611 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:12:27,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:12:27,615 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 22:12:27,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:12:27 BoogieIcfgContainer [2023-02-15 22:12:27,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:12:27,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:12:27,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:12:27,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:12:27,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:12:27" (1/3) ... [2023-02-15 22:12:27,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a7d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:12:27, skipping insertion in model container [2023-02-15 22:12:27,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:12:27" (2/3) ... [2023-02-15 22:12:27,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a7d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:12:27, skipping insertion in model container [2023-02-15 22:12:27,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:12:27" (3/3) ... [2023-02-15 22:12:27,622 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-02-15 22:12:27,632 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:12:27,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 22:12:27,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:12:27,662 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;@61cc8797, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:12:27,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 22:12:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 22:12:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-15 22:12:27,668 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:12:27,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-15 22:12:27,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 22:12:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:12:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2023-02-15 22:12:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:12:27,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810797686] [2023-02-15 22:12:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:12:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:12:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:12:27,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:12:27,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 22:12:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 22:12:27,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 22:12:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 22:12:27,761 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-15 22:12:27,763 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 22:12:27,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-02-15 22:12:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-02-15 22:12:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-02-15 22:12:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-02-15 22:12:27,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-02-15 22:12:27,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-02-15 22:12:27,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-02-15 22:12:27,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-02-15 22:12:27,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-02-15 22:12:27,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-02-15 22:12:27,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-02-15 22:12:27,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-02-15 22:12:27,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-02-15 22:12:27,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 22:12:27,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:12:27,991 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-15 22:12:27,993 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 22:12:28,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:12:28 BoogieIcfgContainer [2023-02-15 22:12:28,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 22:12:28,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 22:12:28,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 22:12:28,011 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 22:12:28,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:12:27" (3/4) ... [2023-02-15 22:12:28,013 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 22:12:28,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 22:12:28,015 INFO L158 Benchmark]: Toolchain (without parser) took 904.49ms. Allocated memory is still 90.2MB. Free memory was 67.4MB in the beginning and 52.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2023-02-15 22:12:28,016 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:12:28,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.16ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 57.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 22:12:28,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.11ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 55.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 22:12:28,022 INFO L158 Benchmark]: Boogie Preprocessor took 34.91ms. Allocated memory is still 90.2MB. Free memory was 55.8MB in the beginning and 54.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 22:12:28,022 INFO L158 Benchmark]: RCFGBuilder took 276.58ms. Allocated memory is still 90.2MB. Free memory was 54.6MB in the beginning and 65.4MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 22:12:28,023 INFO L158 Benchmark]: TraceAbstraction took 386.52ms. Allocated memory is still 90.2MB. Free memory was 65.0MB in the beginning and 52.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 22:12:28,023 INFO L158 Benchmark]: Witness Printer took 6.03ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 52.4MB in the end (delta: 391.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:12:28,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.16ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 57.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.11ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 55.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.91ms. Allocated memory is still 90.2MB. Free memory was 55.8MB in the beginning and 54.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.58ms. Allocated memory is still 90.2MB. Free memory was 54.6MB in the beginning and 65.4MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 386.52ms. Allocated memory is still 90.2MB. Free memory was 65.0MB in the beginning and 52.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.03ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 52.4MB in the end (delta: 391.8kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={1:0}, i=0, upper=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: -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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=33occurred 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, 4 NumberOfCodeBlocks, 4 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 could not prove your program: unable to determine feasibility of some traces [2023-02-15 22:12:28,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample