./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 a31fd051 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-?-a31fd05 [2023-02-15 13:12:36,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:12:36,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:12:36,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:12:36,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:12:36,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:12:36,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:12:36,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:12:36,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:12:36,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:12:36,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:12:36,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:12:36,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:12:36,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:12:36,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:12:36,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:12:36,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:12:36,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:12:36,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:12:36,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:12:36,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:12:36,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:12:36,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:12:36,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:12:36,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:12:36,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:12:36,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:12:36,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:12:36,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:12:36,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:12:36,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:12:36,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:12:36,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:12:36,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:12:36,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:12:36,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:12:36,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:12:36,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:12:36,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:12:36,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:12:36,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:12:36,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 13:12:36,387 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:12:36,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:12:36,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:12:36,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:12:36,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:12:36,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:12:36,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:12:36,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:12:36,390 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:12:36,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:12:36,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:12:36,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:12:36,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:12:36,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:12:36,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:12:36,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:12:36,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:12:36,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:12:36,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:12:36,406 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:12:36,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:12:36,406 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:12:36,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-02-15 13:12:36,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:12:36,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:12:36,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:12:36,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:12:36,621 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:12:36,622 INFO L432 ainManager$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 13:12:37,545 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:12:37,752 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:12:37,753 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-02-15 13:12:37,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d303b975a/337d967487ef4ec780a543eb107da81f/FLAG3b2a35016 [2023-02-15 13:12:37,774 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d303b975a/337d967487ef4ec780a543eb107da81f [2023-02-15 13:12:37,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:12:37,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:12:37,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:12:37,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:12:37,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:12:37,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d00a9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37, skipping insertion in model container [2023-02-15 13:12:37,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:12:37,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:12:37,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:12:37,922 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:12:37,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:12:37,944 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:12:37,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37 WrapperNode [2023-02-15 13:12:37,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:12:37,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:12:37,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:12:37,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:12:37,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,968 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-02-15 13:12:37,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:12:37,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:12:37,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:12:37,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:12:37,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,989 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:12:37,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:12:37,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:12:37,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:12:37,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (1/1) ... [2023-02-15 13:12:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:12:38,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:12:38,015 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 13:12:38,028 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 13:12:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 13:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 13:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-02-15 13:12:38,056 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-02-15 13:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:12:38,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:12:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 13:12:38,110 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:12:38,111 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:12:38,214 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:12:38,218 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:12:38,218 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 13:12:38,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:38 BoogieIcfgContainer [2023-02-15 13:12:38,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:12:38,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:12:38,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:12:38,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:12:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:12:37" (1/3) ... [2023-02-15 13:12:38,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5560042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:38, skipping insertion in model container [2023-02-15 13:12:38,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:37" (2/3) ... [2023-02-15 13:12:38,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5560042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:38, skipping insertion in model container [2023-02-15 13:12:38,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:38" (3/3) ... [2023-02-15 13:12:38,226 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-02-15 13:12:38,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:12:38,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 13:12:38,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:12:38,274 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;@1034f299, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:12:38,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 13:12:38,277 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 13:12:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-15 13:12:38,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:38,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-15 13:12:38,282 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 13:12:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:38,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2023-02-15 13:12:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:12:38,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770629308] [2023-02-15 13:12:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:12:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:12:38,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 13:12:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:12:38,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 13:12:38,385 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 13:12:38,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-02-15 13:12:38,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-02-15 13:12:38,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-02-15 13:12:38,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-02-15 13:12:38,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-02-15 13:12:38,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-02-15 13:12:38,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-02-15 13:12:38,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-02-15 13:12:38,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-02-15 13:12:38,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-02-15 13:12:38,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-02-15 13:12:38,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-02-15 13:12:38,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-02-15 13:12:38,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:12:38,395 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-15 13:12:38,398 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 13:12:38,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:12:38 BoogieIcfgContainer [2023-02-15 13:12:38,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 13:12:38,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 13:12:38,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 13:12:38,411 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 13:12:38,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:38" (3/4) ... [2023-02-15 13:12:38,413 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 13:12:38,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 13:12:38,414 INFO L158 Benchmark]: Toolchain (without parser) took 637.04ms. Allocated memory is still 178.3MB. Free memory was 149.1MB in the beginning and 110.7MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-02-15 13:12:38,415 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:12:38,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.88ms. Allocated memory is still 178.3MB. Free memory was 149.1MB in the beginning and 139.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 13:12:38,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.70ms. Allocated memory is still 178.3MB. Free memory was 139.4MB in the beginning and 137.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:12:38,417 INFO L158 Benchmark]: Boogie Preprocessor took 21.90ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 136.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:12:38,417 INFO L158 Benchmark]: RCFGBuilder took 228.14ms. Allocated memory is still 178.3MB. Free memory was 136.7MB in the beginning and 124.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 13:12:38,417 INFO L158 Benchmark]: TraceAbstraction took 186.77ms. Allocated memory is still 178.3MB. Free memory was 124.3MB in the beginning and 110.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 13:12:38,418 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 178.3MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:12:38,419 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 125.8MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.88ms. Allocated memory is still 178.3MB. Free memory was 149.1MB in the beginning and 139.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.70ms. Allocated memory is still 178.3MB. Free memory was 139.4MB in the beginning and 137.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.90ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 136.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.14ms. Allocated memory is still 178.3MB. Free memory was 136.7MB in the beginning and 124.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 186.77ms. Allocated memory is still 178.3MB. Free memory was 124.3MB in the beginning and 110.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 178.3MB. Free memory is still 110.7MB. 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: 0.1s, 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 13:12:38,439 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 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-?-a31fd05 [2023-02-15 13:12:40,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:12:40,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:12:40,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:12:40,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:12:40,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:12:40,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:12:40,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:12:40,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:12:40,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:12:40,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:12:40,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:12:40,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:12:40,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:12:40,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:12:40,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:12:40,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:12:40,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:12:40,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:12:40,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:12:40,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:12:40,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:12:40,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:12:40,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:12:40,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:12:40,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:12:40,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:12:40,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:12:40,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:12:40,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:12:40,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:12:40,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:12:40,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:12:40,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:12:40,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:12:40,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:12:40,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:12:40,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:12:40,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:12:40,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:12:40,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:12:40,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 13:12:40,557 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:12:40,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:12:40,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:12:40,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:12:40,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:12:40,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:12:40,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:12:40,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:12:40,562 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:12:40,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:12:40,563 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:12:40,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:12:40,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:12:40,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 13:12:40,564 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 13:12:40,565 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:12:40,565 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:12:40,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:12:40,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:12:40,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:12:40,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:12:40,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:12:40,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:12:40,566 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 13:12:40,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 13:12:40,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:12:40,566 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:12:40,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:12:40,567 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 13:12:40,567 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:12:40,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-02-15 13:12:40,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:12:40,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:12:40,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:12:40,859 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:12:40,859 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:12:40,862 INFO L432 ainManager$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 13:12:41,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:12:42,067 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:12:42,067 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-02-15 13:12:42,071 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69423a4cd/1fb00a1018c04b1bbc4441ae5c340790/FLAGb91fbb887 [2023-02-15 13:12:42,088 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69423a4cd/1fb00a1018c04b1bbc4441ae5c340790 [2023-02-15 13:12:42,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:12:42,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:12:42,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:12:42,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:12:42,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:12:42,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4160146a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42, skipping insertion in model container [2023-02-15 13:12:42,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:12:42,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:12:42,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:12:42,236 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:12:42,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:12:42,258 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:12:42,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42 WrapperNode [2023-02-15 13:12:42,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:12:42,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:12:42,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:12:42,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:12:42,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,282 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-02-15 13:12:42,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:12:42,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:12:42,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:12:42,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:12:42,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:12:42,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:12:42,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:12:42,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:12:42,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (1/1) ... [2023-02-15 13:12:42,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:12:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:12:42,354 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 13:12:42,407 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 13:12:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 13:12:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 13:12:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-02-15 13:12:42,421 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-02-15 13:12:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:12:42,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:12:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 13:12:42,473 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:12:42,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:12:42,632 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:12:42,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:12:42,636 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 13:12:42,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:42 BoogieIcfgContainer [2023-02-15 13:12:42,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:12:42,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:12:42,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:12:42,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:12:42,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:12:42" (1/3) ... [2023-02-15 13:12:42,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbd6e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:42, skipping insertion in model container [2023-02-15 13:12:42,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:12:42" (2/3) ... [2023-02-15 13:12:42,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbd6e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:12:42, skipping insertion in model container [2023-02-15 13:12:42,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:42" (3/3) ... [2023-02-15 13:12:42,643 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-02-15 13:12:42,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:12:42,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 13:12:42,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:12:42,695 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;@3afa07ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:12:42,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 13:12:42,698 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 13:12:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-15 13:12:42,702 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:12:42,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-15 13:12:42,703 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 13:12:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:12:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2023-02-15 13:12:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:12:42,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309016266] [2023-02-15 13:12:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:12:42,718 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 13:12:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:12:42,721 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 13:12:42,753 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 13:12:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:12:42,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 13:12:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:12:42,816 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-15 13:12:42,818 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 13:12:42,818 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-02-15 13:12:42,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-02-15 13:12:42,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-02-15 13:12:42,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-02-15 13:12:42,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-02-15 13:12:42,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-02-15 13:12:42,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-02-15 13:12:42,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-02-15 13:12:42,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-02-15 13:12:42,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-02-15 13:12:42,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-02-15 13:12:42,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-02-15 13:12:42,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-02-15 13:12:42,831 INFO L552 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)] Ended with exit code 0 [2023-02-15 13:12:43,029 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 13:12:43,032 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-15 13:12:43,035 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 13:12:43,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:12:43 BoogieIcfgContainer [2023-02-15 13:12:43,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 13:12:43,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 13:12:43,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 13:12:43,049 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 13:12:43,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:12:42" (3/4) ... [2023-02-15 13:12:43,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 13:12:43,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 13:12:43,053 INFO L158 Benchmark]: Toolchain (without parser) took 960.53ms. Allocated memory is still 62.9MB. Free memory was 40.1MB in the beginning and 38.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-02-15 13:12:43,053 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 30.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:12:43,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.99ms. Allocated memory is still 62.9MB. Free memory was 39.9MB in the beginning and 30.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 13:12:43,057 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.36ms. Allocated memory is still 62.9MB. Free memory was 30.0MB in the beginning and 28.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:12:43,058 INFO L158 Benchmark]: Boogie Preprocessor took 35.23ms. Allocated memory is still 62.9MB. Free memory was 28.7MB in the beginning and 27.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:12:43,059 INFO L158 Benchmark]: RCFGBuilder took 317.36ms. Allocated memory is still 62.9MB. Free memory was 27.3MB in the beginning and 32.6MB in the end (delta: -5.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-02-15 13:12:43,059 INFO L158 Benchmark]: TraceAbstraction took 407.94ms. Allocated memory is still 62.9MB. Free memory was 32.0MB in the beginning and 39.0MB in the end (delta: -6.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 13:12:43,060 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 38.7MB in the end (delta: 288.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:12:43,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 30.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.99ms. Allocated memory is still 62.9MB. Free memory was 39.9MB in the beginning and 30.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.36ms. Allocated memory is still 62.9MB. Free memory was 30.0MB in the beginning and 28.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.23ms. Allocated memory is still 62.9MB. Free memory was 28.7MB in the beginning and 27.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.36ms. Allocated memory is still 62.9MB. Free memory was 27.3MB in the beginning and 32.6MB in the end (delta: -5.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 407.94ms. Allocated memory is still 62.9MB. Free memory was 32.0MB in the beginning and 39.0MB in the end (delta: -6.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 38.7MB in the end (delta: 288.3kB). 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: 0.4s, 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 13:12:43,099 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