./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/count_down_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6c24879c 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/array-memsafety/count_down_unsafe.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 f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 18:17:41,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:17:41,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:17:41,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:17:41,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:17:41,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:17:41,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:17:41,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:17:41,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:17:41,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:17:41,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:17:41,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:17:41,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:17:41,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:17:41,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:17:41,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:17:41,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:17:41,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:17:41,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:17:41,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:17:41,956 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:17:41,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:17:41,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:17:41,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:17:41,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:17:41,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:17:41,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:17:41,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:17:41,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:17:41,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:17:41,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:17:41,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:17:41,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:17:41,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:17:41,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:17:41,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:17:41,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:17:41,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:17:41,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:17:41,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:17:41,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:17:41,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:17:41,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 18:17:41,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:17:41,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:17:41,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:17:41,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:17:41,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:17:41,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:17:41,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:17:41,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:17:41,988 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:17:41,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:17:41,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:17:41,989 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:17:41,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:17:41,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:17:41,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:17:41,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:17:41,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:17:41,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:17:41,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:17:41,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:17:41,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:17:41,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:17:41,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 18:17:41,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 18:17:41,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2022-07-12 18:17:42,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:17:42,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:17:42,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:17:42,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:17:42,246 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:17:42,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2022-07-12 18:17:42,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c80e17ee/4dfc60b4971f462581cf7c705ab19e96/FLAG431b6e429 [2022-07-12 18:17:42,725 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:17:42,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2022-07-12 18:17:42,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c80e17ee/4dfc60b4971f462581cf7c705ab19e96/FLAG431b6e429 [2022-07-12 18:17:43,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c80e17ee/4dfc60b4971f462581cf7c705ab19e96 [2022-07-12 18:17:43,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:17:43,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:17:43,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:17:43,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:17:43,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:17:43,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320c2474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43, skipping insertion in model container [2022-07-12 18:17:43,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:17:43,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:17:43,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:17:43,400 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 18:17:43,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:17:43,453 INFO L208 MainTranslator]: Completed translation [2022-07-12 18:17:43,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43 WrapperNode [2022-07-12 18:17:43,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:17:43,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 18:17:43,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 18:17:43,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 18:17:43,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,494 INFO L137 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2022-07-12 18:17:43,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 18:17:43,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 18:17:43,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 18:17:43,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 18:17:43,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 18:17:43,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 18:17:43,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 18:17:43,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 18:17:43,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (1/1) ... [2022-07-12 18:17:43,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:17:43,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 18:17:43,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 18:17:43,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 18:17:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 18:17:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 18:17:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 18:17:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 18:17:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 18:17:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 18:17:43,640 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 18:17:43,641 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 18:17:43,795 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 18:17:43,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 18:17:43,799 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 18:17:43,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:17:43 BoogieIcfgContainer [2022-07-12 18:17:43,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 18:17:43,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 18:17:43,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 18:17:43,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 18:17:43,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:17:43" (1/3) ... [2022-07-12 18:17:43,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c5c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:17:43, skipping insertion in model container [2022-07-12 18:17:43,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:43" (2/3) ... [2022-07-12 18:17:43,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c5c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:17:43, skipping insertion in model container [2022-07-12 18:17:43,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:17:43" (3/3) ... [2022-07-12 18:17:43,812 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2022-07-12 18:17:43,823 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 18:17:43,823 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-07-12 18:17:43,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 18:17:43,857 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e6e9ab7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48c5c969 [2022-07-12 18:17:43,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-12 18:17:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-12 18:17:43,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:17:43,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-12 18:17:43,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-12 18:17:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:17:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash 889508774, now seen corresponding path program 1 times [2022-07-12 18:17:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:17:43,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387134541] [2022-07-12 18:17:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:17:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:17:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:17:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:17:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 18:17:44,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387134541] [2022-07-12 18:17:44,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387134541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:17:44,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:17:44,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 18:17:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101095818] [2022-07-12 18:17:44,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:17:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 18:17:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 18:17:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 18:17:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:17:44,060 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:17:44,098 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-07-12 18:17:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 18:17:44,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-12 18:17:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:17:44,105 INFO L225 Difference]: With dead ends: 31 [2022-07-12 18:17:44,106 INFO L226 Difference]: Without dead ends: 29 [2022-07-12 18:17:44,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:17:44,111 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:17:44,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:17:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-12 18:17:44,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-12 18:17:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.65) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-07-12 18:17:44,140 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2022-07-12 18:17:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:17:44,140 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-07-12 18:17:44,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-07-12 18:17:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 18:17:44,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:17:44,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:17:44,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 18:17:44,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-12 18:17:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:17:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash 119449364, now seen corresponding path program 1 times [2022-07-12 18:17:44,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:17:44,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886306638] [2022-07-12 18:17:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:17:44,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:17:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:17:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:17:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 18:17:44,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886306638] [2022-07-12 18:17:44,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886306638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:17:44,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:17:44,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 18:17:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70306570] [2022-07-12 18:17:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:17:44,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 18:17:44,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 18:17:44,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 18:17:44,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:17:44,211 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:17:44,241 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-07-12 18:17:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 18:17:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 18:17:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:17:44,242 INFO L225 Difference]: With dead ends: 25 [2022-07-12 18:17:44,243 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 18:17:44,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:17:44,245 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:17:44,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:17:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 18:17:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 18:17:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-07-12 18:17:44,252 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2022-07-12 18:17:44,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:17:44,252 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-07-12 18:17:44,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 18:17:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-07-12 18:17:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 18:17:44,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:17:44,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:17:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 18:17:44,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-07-12 18:17:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:17:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash 119449365, now seen corresponding path program 1 times [2022-07-12 18:17:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 18:17:44,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927753940] [2022-07-12 18:17:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:17:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 18:17:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:17:44,274 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 18:17:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:17:44,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 18:17:44,306 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 18:17:44,307 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2022-07-12 18:17:44,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2022-07-12 18:17:44,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2022-07-12 18:17:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-07-12 18:17:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-07-12 18:17:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-07-12 18:17:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-07-12 18:17:44,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2022-07-12 18:17:44,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-07-12 18:17:44,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 18:17:44,316 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 18:17:44,319 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 18:17:44,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:17:44 BoogieIcfgContainer [2022-07-12 18:17:44,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 18:17:44,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 18:17:44,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 18:17:44,340 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 18:17:44,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:17:43" (3/4) ... [2022-07-12 18:17:44,342 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 18:17:44,365 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 18:17:44,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 18:17:44,366 INFO L158 Benchmark]: Toolchain (without parser) took 1268.92ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 50.7MB in the end (delta: 43.4MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2022-07-12 18:17:44,366 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory was 104.9MB in the beginning and 104.9MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:17:44,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.22ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 98.2MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 18:17:44,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.16ms. Allocated memory is still 132.1MB. Free memory was 98.2MB in the beginning and 96.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:17:44,367 INFO L158 Benchmark]: Boogie Preprocessor took 35.54ms. Allocated memory is still 132.1MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:17:44,367 INFO L158 Benchmark]: RCFGBuilder took 268.43ms. Allocated memory is still 132.1MB. Free memory was 95.4MB in the beginning and 84.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 18:17:44,368 INFO L158 Benchmark]: TraceAbstraction took 536.49ms. Allocated memory is still 132.1MB. Free memory was 83.5MB in the beginning and 52.8MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-12 18:17:44,368 INFO L158 Benchmark]: Witness Printer took 25.60ms. Allocated memory is still 132.1MB. Free memory was 52.8MB in the beginning and 50.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:17:44,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory was 104.9MB in the beginning and 104.9MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.22ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 98.2MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.16ms. Allocated memory is still 132.1MB. Free memory was 98.2MB in the beginning and 96.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.54ms. Allocated memory is still 132.1MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.43ms. Allocated memory is still 132.1MB. Free memory was 95.4MB in the beginning and 84.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 536.49ms. Allocated memory is still 132.1MB. Free memory was 83.5MB in the beginning and 52.8MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 25.60ms. Allocated memory is still 132.1MB. Free memory was 52.8MB in the beginning and 50.7MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int val; [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L516] length = 1 VAL [length=1] [L517] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L518] COND FALSE !(!arr) [L519] i=0 VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=1] [L519] COND TRUE i