./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 e19ca921 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-dev-e19ca92 [2021-12-21 23:57:13,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 23:57:13,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 23:57:14,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 23:57:14,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 23:57:14,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 23:57:14,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 23:57:14,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 23:57:14,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 23:57:14,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 23:57:14,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 23:57:14,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 23:57:14,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 23:57:14,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 23:57:14,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 23:57:14,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 23:57:14,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 23:57:14,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 23:57:14,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 23:57:14,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 23:57:14,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 23:57:14,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 23:57:14,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 23:57:14,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 23:57:14,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 23:57:14,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 23:57:14,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 23:57:14,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 23:57:14,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 23:57:14,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 23:57:14,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 23:57:14,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 23:57:14,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 23:57:14,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 23:57:14,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 23:57:14,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 23:57:14,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 23:57:14,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 23:57:14,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 23:57:14,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 23:57:14,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 23:57:14,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 23:57:14,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 23:57:14,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 23:57:14,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 23:57:14,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 23:57:14,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 23:57:14,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 23:57:14,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 23:57:14,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 23:57:14,104 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 23:57:14,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 23:57:14,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 23:57:14,105 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 23:57:14,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 23:57:14,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 23:57:14,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 23:57:14,106 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 23:57:14,106 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 23:57:14,106 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 23:57:14,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 23:57:14,106 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 23:57:14,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 23:57:14,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 23:57:14,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 23:57:14,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 23:57:14,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 23:57:14,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 23:57:14,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 23:57:14,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 23:57:14,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 23:57:14,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 23:57:14,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 23:57:14,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2021-12-21 23:57:14,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 23:57:14,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 23:57:14,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 23:57:14,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 23:57:14,316 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 23:57:14,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2021-12-21 23:57:14,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7f2aa87/f8a048d10a2c404284850f072484007a/FLAGdae7e8d23 [2021-12-21 23:57:14,702 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 23:57:14,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2021-12-21 23:57:14,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7f2aa87/f8a048d10a2c404284850f072484007a/FLAGdae7e8d23 [2021-12-21 23:57:15,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7f2aa87/f8a048d10a2c404284850f072484007a [2021-12-21 23:57:15,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 23:57:15,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 23:57:15,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 23:57:15,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 23:57:15,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 23:57:15,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea672e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15, skipping insertion in model container [2021-12-21 23:57:15,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 23:57:15,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 23:57:15,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 23:57:15,350 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 23:57:15,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 23:57:15,397 INFO L208 MainTranslator]: Completed translation [2021-12-21 23:57:15,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15 WrapperNode [2021-12-21 23:57:15,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 23:57:15,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 23:57:15,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 23:57:15,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 23:57:15,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,423 INFO L137 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2021-12-21 23:57:15,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 23:57:15,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 23:57:15,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 23:57:15,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 23:57:15,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 23:57:15,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 23:57:15,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 23:57:15,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 23:57:15,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (1/1) ... [2021-12-21 23:57:15,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 23:57:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 23:57:15,474 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) [2021-12-21 23:57:15,475 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 [2021-12-21 23:57:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 23:57:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 23:57:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 23:57:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 23:57:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 23:57:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 23:57:15,564 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 23:57:15,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 23:57:15,710 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 23:57:15,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 23:57:15,716 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 23:57:15,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:57:15 BoogieIcfgContainer [2021-12-21 23:57:15,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 23:57:15,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 23:57:15,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 23:57:15,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 23:57:15,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:57:15" (1/3) ... [2021-12-21 23:57:15,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b842d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:57:15, skipping insertion in model container [2021-12-21 23:57:15,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:57:15" (2/3) ... [2021-12-21 23:57:15,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b842d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:57:15, skipping insertion in model container [2021-12-21 23:57:15,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:57:15" (3/3) ... [2021-12-21 23:57:15,722 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2021-12-21 23:57:15,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 23:57:15,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-12-21 23:57:15,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 23:57:15,765 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 23:57:15,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-21 23:57:15,779 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) [2021-12-21 23:57:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 23:57:15,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 23:57:15,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 23:57:15,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-21 23:57:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 23:57:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash 889508774, now seen corresponding path program 1 times [2021-12-21 23:57:15,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 23:57:15,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503396888] [2021-12-21 23:57:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 23:57:15,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 23:57:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 23:57:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 23:57:15,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 23:57:15,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503396888] [2021-12-21 23:57:15,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503396888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 23:57:15,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 23:57:15,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 23:57:15,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234867863] [2021-12-21 23:57:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 23:57:15,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 23:57:15,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 23:57:15,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 23:57:15,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 23:57:16,000 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) [2021-12-21 23:57:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 23:57:16,033 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-12-21 23:57:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 23:57:16,036 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 [2021-12-21 23:57:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 23:57:16,041 INFO L225 Difference]: With dead ends: 31 [2021-12-21 23:57:16,041 INFO L226 Difference]: Without dead ends: 29 [2021-12-21 23:57:16,043 INFO L932 BasicCegarLoop]: 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 [2021-12-21 23:57:16,047 INFO L933 BasicCegarLoop]: 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 [2021-12-21 23:57:16,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 23:57:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-21 23:57:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-21 23:57:16,070 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) [2021-12-21 23:57:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-12-21 23:57:16,072 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2021-12-21 23:57:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 23:57:16,072 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-12-21 23:57:16,072 INFO L471 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) [2021-12-21 23:57:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-12-21 23:57:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 23:57:16,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 23:57:16,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 23:57:16,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 23:57:16,074 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-21 23:57:16,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 23:57:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash 119449364, now seen corresponding path program 1 times [2021-12-21 23:57:16,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 23:57:16,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716710692] [2021-12-21 23:57:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 23:57:16,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 23:57:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 23:57:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 23:57:16,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 23:57:16,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716710692] [2021-12-21 23:57:16,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716710692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 23:57:16,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 23:57:16,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 23:57:16,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430309752] [2021-12-21 23:57:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 23:57:16,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 23:57:16,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 23:57:16,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 23:57:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 23:57:16,134 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) [2021-12-21 23:57:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 23:57:16,158 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-12-21 23:57:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 23:57:16,159 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 [2021-12-21 23:57:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 23:57:16,160 INFO L225 Difference]: With dead ends: 25 [2021-12-21 23:57:16,160 INFO L226 Difference]: Without dead ends: 25 [2021-12-21 23:57:16,161 INFO L932 BasicCegarLoop]: 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 [2021-12-21 23:57:16,165 INFO L933 BasicCegarLoop]: 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 [2021-12-21 23:57:16,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 23:57:16,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-21 23:57:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-21 23:57:16,170 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) [2021-12-21 23:57:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-12-21 23:57:16,171 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2021-12-21 23:57:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 23:57:16,171 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-12-21 23:57:16,171 INFO L471 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) [2021-12-21 23:57:16,172 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-12-21 23:57:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 23:57:16,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 23:57:16,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 23:57:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 23:57:16,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-21 23:57:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 23:57:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 119449365, now seen corresponding path program 1 times [2021-12-21 23:57:16,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 23:57:16,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387817740] [2021-12-21 23:57:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 23:57:16,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 23:57:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 23:57:16,203 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 23:57:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 23:57:16,233 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 23:57:16,233 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 23:57:16,234 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 9 remaining) [2021-12-21 23:57:16,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (7 of 9 remaining) [2021-12-21 23:57:16,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 9 remaining) [2021-12-21 23:57:16,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 9 remaining) [2021-12-21 23:57:16,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 9 remaining) [2021-12-21 23:57:16,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 9 remaining) [2021-12-21 23:57:16,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (2 of 9 remaining) [2021-12-21 23:57:16,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 9 remaining) [2021-12-21 23:57:16,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2021-12-21 23:57:16,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 23:57:16,239 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 23:57:16,241 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 23:57:16,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:57:16 BoogieIcfgContainer [2021-12-21 23:57:16,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 23:57:16,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 23:57:16,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 23:57:16,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 23:57:16,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:57:15" (3/4) ... [2021-12-21 23:57:16,268 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 23:57:16,300 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 23:57:16,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 23:57:16,301 INFO L158 Benchmark]: Toolchain (without parser) took 1171.53ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 77.0MB in the beginning and 85.4MB in the end (delta: -8.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,301 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 23:57:16,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.73ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 76.6MB in the end (delta: 78.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.87ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 75.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,302 INFO L158 Benchmark]: Boogie Preprocessor took 17.12ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 73.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,302 INFO L158 Benchmark]: RCFGBuilder took 271.62ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 62.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,303 INFO L158 Benchmark]: TraceAbstraction took 546.82ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 62.0MB in the beginning and 86.9MB in the end (delta: -24.9MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,305 INFO L158 Benchmark]: Witness Printer took 34.51ms. Allocated memory is still 130.0MB. Free memory was 86.9MB in the beginning and 85.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 23:57:16,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.73ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 76.6MB in the end (delta: 78.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.87ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 75.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.12ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 73.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.62ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 62.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 546.82ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 62.0MB in the beginning and 86.9MB in the end (delta: -24.9MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 34.51ms. Allocated memory is still 130.0MB. Free memory was 86.9MB in the beginning and 85.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 524]: 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